Siemens CP 1515 Operating instructions

Siemens CP 1515 Operating instructions
SIMATIC NET
Operating Instructions
Preface, Contents
Basic Information on
Wireless LAN
Communication
1
SCALANCE W788-2PRO
(Dual Access Point)
Description of the
SCALANCE W78x
2
SCALANCE W788-1RR
(Access Point iPCF)
Commissioning
3
SCALANCE W788-2RR
(Dual Access Point iPCF)
Configuring the IP Address
with the Primary Setup Tool
4
Configuration Using the
Wizards of
Web Based Management
5
Configuration Using Web
Based Management and the
Command Line Interface
6
Technical Specifications
7
SCALANCE W788-1PRO
(Access Point)
Approvals, Appendix, Glossary,
Index
C79000-G8976-C184-07
Release 10/2006
Classification of Safety-Related Notices
This document contains notices which you should observe to ensure your own
personal safety, as well as to protect the product and connected equipment. These
notices are highlighted in the manual by a warning triangle and are marked as follows
according to the level of danger:
!
Danger
indicates that death or severe personal injury will result if proper precautions are not
taken.
!
Warning
indicates that death or severe personal injury can result if proper precautions are not
taken.
!
Caution
with warning triangle indicates that minor personal injury can result if proper
precautions are not taken.
Caution
without warning triangle indicates that damage to property can result if proper
precautions are not taken.
Notice
indicates that an undesirable result or status can occur if the relevant notice is
ignored.
Note
highlights important information on the product, using the product, or part of the
documentation that is of particular importance and that will be of benefit to the user.
© Copyright Siemens AG, 1998 to 2006 - All rights reserved
The reproduction, transmission or use of this document or its contents is
not permitted without express written authority. Offenders will be liable for
damages. All rights, including rights created by patent grant or registration
of a utility model or design, are reserved.
Siemens AG
Automation and Drives
Industrial Communication
Postfach 4848, D-90327 Nürnberg
Siemens Aktiengesellschaft
Disclaimer
We have checked the contents of this manual for agreement with the
hardware and software described. Since deviations cannot be precluded
entirely, we cannot guarantee full agreement. However, the data in this
manual are reviewed regularly and any necessary corrections included in
subsequent editions. Suggestions for improvement are welcome.
C79000-G8976-C184-07
Technical data subject to change.
Printed in the Federal Republic of Germany
Trademarks
SIMATIC®, SIMATIC NET®, SINEC®, SIMATIC NET Networking for Industry® and
SCALANCE® are registered trademarks of Siemens AG.
Third parties using for their own purposes any other names in this document which
refer to trademarks might infringe upon the rights of the trademark owners.
Safety Instructions Regarding your Product
Before you use the product described here, read the safety instructions below
thoroughly.
Personnel Qualification Requirements
Only qualified personnel should be allowed to install and work on this equipment.
Qualified personnel as referred to in this manual or in the warning notes are defined
as persons who are familiar with the installation, assembly, startup and operation of
this product and who possess the relevant qualifications for their work, e.g.:
●
Training in or authorization for connecting up, grounding or labeling circuits and
devices or systems in accordance with current standards in safety technology
●
Training in or authorization for the maintenance and use of suitable safety
equipment in accordance with current standards in safety technology
●
First aid qualification
Correct Usage of Hardware Products
Please note the following regarding the correct usage of hardware products:
Caution
This device may only be used for the applications described in the catalog or the
technical description, and only in connection with devices or components from other
manufacturers which have been approved or recommended by Siemens.
This product can only function correctly and safely if it is transported, stored, set up,
and installed correctly, and operated and maintained as recommended.
Before you use the supplied sample programs or programs you have written yourself,
make certain that no injury to persons nor damage to equipment can result in your
plant or process.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
3
Prior to Startup
Before putting the product into operation, note the following warning:
Caution
Prior to startup you must observe the instructions in the relevant documentation. For
ordering data of the documentation please refer to the catalogs or contact your local
SIEMENS representative.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
4
Preface
Validity of the Operating Instructions
These Operating Instructions cover the following products:
●
SCALANCE W788-1PRO
●
SCALANCE W788-2PRO
●
SCALANCE W788-1RR
●
SCALANCE W788-2RR
Where the description applies to all products, the name SCALANCE W78x is used.
Where the description applies to a specific product, the full name of the product is
used.
These operating instructions apply to the following software versions:
●
SCALANCE W78x firmware as of Version 3.1
●
Primary Setup Tool as of Version 3.1
Purpose of the Operating Instructions
These operating instructions are intended to provide you with the information you
require to install, commission and operate the SCALANCE W78x correctly. It
explains how to configure the SCALANCE W78x and how to integrate the
SCALANCE W78x in a WLAN network.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
5
Preface
Orientation in the Documentation
Apart from the operating instructions you are currently reading, the following
documentation is also available from SIMATIC NET on the topic of Industrial
Wireless LANs:
●
Operating Instructions (compact) SCALANCE W7xx
This document is supplied with the device on paper and contains a concise
summary of the most important information required to use the following
products:
ƒ SCALANCE W788-1PRO
ƒ SCALANCE W788-2PRO
ƒ SCALANCE W788-1RR
ƒ SCALANCE W788-2RR
ƒ SCALANCE W744-1PRO
ƒ SCALANCE W746-1PRO
ƒ SCALANCE W747-1RR
●
Operating Instructions SCALANCE W74x
The comprehensive documentation for the following products:
ƒ SCALANCE W744-1PRO
ƒ SCALANCE W746-1PRO
ƒ SCALANCE W747-1RR
The document contains all the information for the setup, commissioning and
operation of these devices. The SCALANCE W74x is connected to a PC / PLC
by an Ethernet cable and allows the attachment of these devices to a wireless
network; in other words, it is a gateway from a wired to a wireless network.
●
System Manual Wireless LAN Basics
This includes not only the description of the physical basics and an outline of
the most important IEEE standards but also information on data security and a
description of industrial uses of wireless LAN.
You should read this manual if you want to set up WLAN networks with a more
complex structure (not only connections between two devices).
●
System Manual RCoax
This system manual contains both an explanation of the technical basis of
leaky feeder cables as well as a description of the SIMATIC NET RCoax
components and their functionality. The installation / commissioning and
connection of RCoax components is explained.
●
Manual IWLAN/PB Link PNIO Gateway for Industrial Ethernet
The user documentation for the IWLAN/PB Link. This device is a gateway
between IWLAN and PROFIBUS.
●
Operating Instructions CP 7515
The comprehensive user documentation for the CP 7515 communications
processor with all the information required to operate this device.
The CP 7515 is inserted in a CardBus / PC-card (32-bit) slot and allows
attachment of the PC/PG to a wireless network.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
6
Preface
●
Operating Instructions (compact) CP 7515
This document is supplied with the device on paper and contains a concise
summary of the most important information required to use the CP 7515.
●
Manual CP 1515
The comprehensive user documentation for the CP 1515 communications
processor with all the information required to operate this device.
The CP 1515 is inserted in a PC-card slot (Type II) and allows attachment of
the PC/PG to a wireless network.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
7
Preface
Biological Compatibility
With regard to the question of whether electromagnetic fields (for example in
association with industrial wireless LANs) can put human health at risk, we refer to
a publication of BITKOM (German Association for information Technology,
Telecommunication and New Media e. V.), dated December 2003:
"The same regulations for the protection of health for all other radio
applications also apply to WLAN devices. These regulations are based on
the protection concept of ICNIRP2 or the corresponding recommendation of
the European Council.
The independent German radiation protection commission (SSK) was
commissioned by the federal German ministry of the environment to
investigate the possible dangers - thermal and non-thermal - resulting from
electromagnetic fields and came to the following conclusions3:
"The SSK comes to the conclusion that even after evaluation of the latest
scientific literature, there is no new scientific evidence regarding proven
adverse effects on health that causes any doubt regarding the scientific
evaluation on which the protection concept of the ICNIRP or the European
Council recommendation."
The SSK also concludes that below the current limit values, these is also no
scientific suspicion of health risks.
This assessment agrees with those of other national and international
scientific commissions and of the WHO (www.who.int/emf).
Accordingly and in view of the fact that WLAN devices are significantly below
the scientifically established limit values, there are no health risks from the
electromagnetic fields of WLAN products.
2
International Council on Non-Ionizing Radiation Protection
3
'Limit Values and Precautionary Measures to Protect the General Public from Electromagnetic
Fields' Recommendation of the Radiation Protection Commission (SSK) with scientific
justification, Issue 29, 2001."
You will find further information on this topic under the following URL:
www.bitkom.org
Operating Instructions SCALANCE W78x
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8
Contents
1
Basic Information on Wireless LAN Communication ............................................... 13
1.1
Network Structure .............................................................................................. 13
1.2
1.2.1
1.2.2
WLAN Communication ...................................................................................... 19
MAC-based Communication.............................................................................. 19
IP-based Communication .................................................................................. 20
2
Description of the SCALANCE W78x ......................................................................... 21
3
Commissioning............................................................................................................. 31
3.1
Lightning Protection, Power Supply, and Grounding......................................... 31
3.2
Assembly and Connectors................................................................................. 33
3.3
3.3.1
3.3.2
3.3.4
Cabling for Power Supply and Ethernet ............................................................ 35
General Notes.................................................................................................... 35
Assembling an IE Hybrid Cable 2 x 2 + 4 x 0.34 with an IE IP 67 Hybrid
Connector .......................................................................................................... 36
Assembling an IE FC TP Standard Cable 4 x 2 GP or
IE FC TP Flexible Cable 4 x 2 GP with an IE IP 67 Hybrid Connector ............. 40
Pinout of the M12 Connector............................................................................. 43
3.4
Commissioning with the PRESET PLUG .......................................................... 44
3.3.3
4
5
Configuring the IP Address with the Primary Setup Tool ........................................ 47
4.1
Introduction ........................................................................................................ 47
4.2
Installation of the DLC Protocol in Windows XP Professional........................... 49
4.3
Installation of the DLC Protocol in Windows 2000 Professional SP2................ 50
4.4
Installing the Primary Setup Tool....................................................................... 51
4.5
4.5.1
Working with the Primary Setup Tool ................................................................ 52
Primary Setup Tool via the Command Line....................................................... 56
Configuration Using the Wizards of Web Based Management................................ 57
5.1
Introduction ........................................................................................................ 57
5.2
5.2.1
Starting Web Based Management and Logging On.......................................... 59
Connection over HTTPS.................................................................................... 60
5.3
Selecting the Wizards ........................................................................................ 61
5.4
5.4.1
5.4.2
5.4.3
5.4.4
5.4.5
5.4.6
Basic Wizard...................................................................................................... 63
IP Settings ......................................................................................................... 63
System name..................................................................................................... 65
Country Code..................................................................................................... 66
Wireless Settings in Access Point Mode ........................................................... 67
Wireless Settings in Client Mode....................................................................... 68
Adopt MAC Address Settings (Client Mode only).............................................. 69
Operating Instructions SCALANCE W78x
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Contents
6
5.4.7
5.4.8
Channel Settings (only in access point mode) .................................................. 72
Finish ................................................................................................................. 74
5.5
5.5.1
5.5.2
5.5.3
5.5.4
5.5.5
5.5.6
5.5.7
5.5.8
5.5.9
5.5.10
5.5.11
5.5.12
Security Wizard.................................................................................................. 75
Security Settings................................................................................................ 76
Security Settings for Management Interfaces ................................................... 77
Security Settings for SNMP Protocol................................................................. 78
Security Settings for WLAN (Page 1, only in access point mode) .................... 79
Security Settings for WLAN (Page 2) ................................................................ 83
Settings for the Security Level Low ................................................................... 87
Settings for the Security Level Medium in Access Point Mode ......................... 88
Settings for Security Level Medium in Client Mode........................................... 89
Settings for the Security Level High .................................................................. 90
Settings for the Security Level Highest.............................................................. 91
The Following Settings Were Made................................................................... 91
Finish ................................................................................................................. 92
5.6
5.6.1
5.6.2
5.6.3
5.6.4
iPCF Wizard....................................................................................................... 93
i Point Coordination Function Settings .............................................................. 93
Security Settings for WLAN ............................................................................... 96
Public Security Key for WLAN ........................................................................... 97
Finish ................................................................................................................. 98
Configuration Using Web Based Management and the Command Line Interface 99
6.1
6.1.1
6.1.2
6.1.3
6.1.4
General Information on Web Based Management and the
Command Line Interface ................................................................................... 99
Introduction ........................................................................................................ 99
The LED Simulation of Web Based Management........................................... 100
Working with Web Based Management .......................................................... 101
Command Line Interface (CLI) ........................................................................ 102
6.2
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
6.2.6
6.2.7
6.2.8
6.2.9
6.2.10
6.2.11
6.2.12
The System Menu............................................................................................ 104
System Information Menu Command .............................................................. 104
IP Settings Menu Command............................................................................ 112
Services Menu Command ............................................................................... 114
Restart Menu Command.................................................................................. 116
Event Config Menu Command ........................................................................ 118
E-mail Config Menu Command ....................................................................... 121
SNMP Config Menu Command ....................................................................... 122
Syslog Menu Command .................................................................................. 127
SNTP Config Menu Command ........................................................................ 130
Fault State Menu Command............................................................................ 131
Load & Save Menu Command ........................................................................ 132
C-PLUG Menu Command................................................................................ 136
6.3
6.3.1
6.3.2
Interfaces Menu ............................................................................................... 141
Ethernet Menu Command ............................................................................... 141
WLAN Menu Command................................................................................... 143
Operating Instructions SCALANCE W78x
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10
Contents
7
6.3.3
6.3.4
6.3.5
6.3.6
6.3.7
Advanced Submenu ........................................................................................ 149
SSID List Submenu (client mode only)............................................................ 156
Advanced G Submenu..................................................................................... 157
Data Rates Submenu Command (access point mode only) ........................... 160
VAP Submenu Command ............................................................................... 162
6.4
6.4.1
6.4.2
6.4.3
6.4.4
6.4.5
The Security Menu........................................................................................... 163
Basic Wireless Menu Command ..................................................................... 163
Keys Menu Command ..................................................................................... 173
ACL Menu Command ...................................................................................... 174
RADIUS Server Menu Command.................................................................... 178
Access Menu Command.................................................................................. 179
6.5
6.5.1
6.5.2
6.5.3
6.5.4
6.5.5
6.5.6
6.5.7
6.5.8
The Bridge Menu ............................................................................................. 180
WDS Menu Command..................................................................................... 181
VLAN Menu Command.................................................................................... 183
Learning Table Menu Command ..................................................................... 192
ARP Table Menu Command............................................................................ 192
Spanning Tree Menu Command ..................................................................... 192
Storm Threshold Menu Command .................................................................. 202
NAT Menu Command ...................................................................................... 203
IP Mapping Table Menu Command................................................................. 208
6.6
6.6.1
6.6.2
6.6.3
The Filters Menu.............................................................................................. 210
MAC Filter Menu Command ............................................................................ 210
MAC Dir Filter Menu Command ...................................................................... 211
Protocol Filter Menu Command....................................................................... 212
6.7
6.7.1
6.7.2
6.7.3
6.7.4
6.7.5
6.7.6
The I-Features Menu ....................................................................................... 213
iQoS Menu Command ..................................................................................... 213
iPCF Menu Command ..................................................................................... 215
Forced Roaming on IP Down .......................................................................... 219
Link Check Menu Command ........................................................................... 220
Redundancy Menu Command......................................................................... 222
IP-Alive Menu Command................................................................................. 224
6.8
6.8.1
6.8.2
6.8.3
6.8.4
6.8.5
6.8.6
6.8.7
6.8.8
6.8.9
6.8.10
The Information Menu...................................................................................... 226
Log Table Menu Command ............................................................................. 227
Auth Log Menu Command............................................................................... 228
Versions Menu Command ............................................................................... 229
Client List Menu Command ............................................................................. 230
Ethernet Menu Command ............................................................................... 232
WLAN Menu Command................................................................................... 232
iQoS Menu Command ..................................................................................... 238
Spanning Tree Menu Command ..................................................................... 240
IP, TCP/IP, ICMP, SNMP Menu Command..................................................... 242
Signal Recorder Menu Command ................................................................... 242
Technical Specifications / Approvals....................................................................... 248
Operating Instructions SCALANCE W78x
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Contents
Approvals ................................................................................................................................. 252
Appendix .................................................................................................................................. 257
Private MIB Variables of the SCALANCE W78x .......................................................... 257
Designing and Calculating Wireless Systems Based on the Example of RCoax ........ 261
Calculating in Decibels ................................................................................................. 261
Power Specifications .................................................................................................... 262
Losses Based on the Example of a 2.4 GHz RCoax Cable ......................................... 264
Receiver Sensitivity ...................................................................................................... 266
System Calculation Based on the Example of RCoax ................................................. 267
Glossary ................................................................................................................................... 269
Index
...................................................................................................................................... 273
Operating Instructions SCALANCE W78x
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12
Basic Information on Wireless LAN
Communication
1.1
1
Network Structure
Standalone Configuration with the SCALANCE W78x
This configuration does not require a server and the SCALANCE W78x does not
have a connection to a wired Ethernet. Within its transmission range, the
SCALANCE W78x forwards data from one WLAN node to another.
The wireless network has a unique name. All the devices exchanging data within
this network must be configured with this name.
Figure 1-1
Standalone Configuration of a SCALANCE W78x. The gray area indicates
the wireless transmission range of the SCALANCE W78x.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
13
Basic Information on Wireless LAN Communication
Ad Hoc Networks
In the ad hoc mode, nodes communicate directly (connections 1 through 3 in
Figure 1-2) without involving a SCALANCE W78x with each other (connection 4).
The nodes access common resources (files or even devices, for example a printer)
of the server. This is, of course, only possible when the nodes are within the
wireless range of the server or within each other's range.
2
1
4
3
Figure 1-2
Ad Hoc Network without SCALANCE W78x
Operating Instructions SCALANCE W78x
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14
Basic Information on Wireless LAN Communication
Wireless Access to a Wired Ethernet Network
If one (or more) SCALANCE W78x access points have access to wired Ethernet,
the following applications are possible:
●
A single SCALANCE W78x as gateway:
A wireless network can be connected with a wired network over a SCALANCE
W78x.
●
Span of wireless coverage for the wireless network with several
SCALANCE W78x access points:
The SCALANCE W78x access points are all configured with the same unique
SSID (network name). All nodes that want to communicate over this network
must also be configured with this SSID.
If a mobile station moves from the coverage range (cell) of one
SCALANCE W78x to the coverage range (cell) of another SCALANCE W78x,
the wireless connection is maintained (this is called roaming).
Figure 1-3
Wireless Connection of a Mobile Station over two Cells (Roaming)
Operating Instructions SCALANCE W78x
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15
Basic Information on Wireless LAN Communication
Multichannel Configuration
If neighboring SCALANCE W78x access points use the same frequency channel,
the response times are longer due to the collisions that occur. If the configuration
shown in Figure 1-4 is implemented as a single-channel system, computers A and
B cannot communicate at the same time with the SCALANCE W78x access points
in their cells.
If neighboring SCALANCE W78x access points are set up for different frequencies,
this leads to a considerable improvement in performance. As a result, neighboring
cells each have their own medium and the delays resulting from time-offset
transmission no longer occur.
Channel spacing should be as large as possible; a practical value would be 25
MHz. Even in a multichannel configuration, all SCALANCE W78x access points
can be configured with the same network name.
1
7
A
B
1
7
Figure 1-4
Multichannel Configuration on Channels 1 and 7 with four
SCALANCE W78x Access Points
Operating Instructions SCALANCE W78x
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16
Basic Information on Wireless LAN Communication
Wireless Distribution System (WDS)
WDS allows direct connections between SCALANCE W78x devices and or
between SCALANCE W78x and other WDS-compliant devices. These are used to
create a wireless backbone or to connect an individual SCALANCE W78x to a
network that cannot be connected directly to the cable infrastructure due to its
location.
Two alternative configurations are possible. The WDS partner can be configured
both using its name and its MAC address.
1
1
A
B
1
1
Figure 1-5
Implementation of WDS with four SCALANCE W78x Access Points
Operating Instructions SCALANCE W78x
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17
Basic Information on Wireless LAN Communication
Redundant Wireless LAN (RWlan)
RWlan allows a redundant, wireless connection between two SCALANCE W7882xx devices (W788-2PRO or W788-2RR). This is used to set up a redundant
wireless backbone that cannot be implemented as a wired network due to its
location but nevertheless has high demands in terms of availability.
Two alternative configurations are possible. The RWlan partner can be configured
both using its name and its MAC address.
B
A
Figure 1-6
Implementation of RWlan with two SCALANCE W788-2xx.
As an alternative, data transfer is possible over one of the two wireless
adapters.
Operating Instructions SCALANCE W78x
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18
1.2
WLAN Communication
1.2.1
MAC-based Communication
Auto Find Adopt MAC / Adopt MAC manually
Frames in the direction from the client to the access point always have the MAC
address of the WLAN interface as the source MAC address. As a result, the
learning table at the access point end always has only the MAC address of the
WLAN interface of the client.
If the MAC address of a device connected to the client over Ethernet is adopted,
both the MAC-based and the IP-based frames find their destination in precisely this
device.
Other nodes located downstream from the client cannot be reached. The AP
checks whether the destination MAC matches the MAC addresses of the
connected clients. Since a client can only adopt one MAC address, the access
point does not find a match and discards the packets to other nodes.
Maximum possible number of MAC nodes downstream from the client: 1
Notes on setting Auto Find Adopt MAC:
●
As long as there is no link on the Ethernet interface, the device uses the MAC
address of the Ethernet interface so that it can be reached in this status. In this
status, the device can be found using the Primary Setup Tool.
●
As soon as there is a link on the Ethernet interface, the device adopts the
source MAC address of the first received frame.
Note
From the moment that the device adopts another MAC address (whether manually
or automatically), the device no longer responds to queries of the Primary Setup
Tool when the query is received over the WLAN interface. Queries of the PST over
the Ethernet interface continue to be replied to.
Adopt Own MAC (only W746/W747 and W788 in client mode)
If IP-based frames need to be sent to a device connected downstream from the
client, the default setting Adopt Own Mac can be retained. The client registers with
the MAC address of its Ethernet adapter. The IP packets are broken down
according to an internal table and forwarded to the connected devices (IP
mapping).
Operating Instructions SCALANCE W78x
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Basic Information on Wireless LAN Communication
Communication at the MAC address level (ISO/OSI layer 2) is then only possible
with a component downstream from the client if its MAC address was adopted by
the client.
Maximum possible number of MAC nodes downstream from the client: 0
Layer 2 Tunneling (only W746/W747 and W788 in client mode)
With layer 2 tunneling, the client provides information about the devices
downstream from it when it registers with an access point. This makes it possible to
enter the MAC addresses of these devices in the learning table of the access point.
The access point can forward MAC-based frames for the devices downstream from
the client to the appropriate client.
In much the same way as with WDS, a separate port is created for the L2T client
over which the Ethernet frames are sent without changing the destination MAC
address.
Maximum possible number of MAC nodes downstream from the client: 8
1.2.2
IP-based Communication
IP Mapping (only W746/747 and W788 in client mode)
If there is more than one device connected downstream from the client and these
should only be addressed with IP frames, you can implement WLAN access for
several devices with one client. With IP mapping, the client maintains a table with
the assignment of MAC address and IP address to forward incoming IP frames to
the correct MAC address.
Maximum possible number of IP nodes downstream from the client: 8
Operating Instructions SCALANCE W78x
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20
Description of the SCALANCE W78x
2
Components of the Product
The following components are supplied with the SCALANCE W78x:
●
SCALANCE W78x
●
2 OMNI antennas
●
1 IE IP 67 hybrid plug-in connection
●
1 protective cap for the M12 socket
●
2 (or 4 with SCALANCE W788-2PRO or SCALANCE W788-2RR) protective
caps for the R-SMA sockets
●
1 SIMATIC NET Industrial Wireless LAN CD with these Operating Instructions
for the SCALANCE W78x
Please check that the consignment you have received is complete. If it is not
complete, please contact your supplier or your local Siemens office.
Requirements for Installation and Operation
A PG/PC with a network attachment must be available to configure the
SCALANCE W78x. If no DHCP server is available, a PC on which the Primary
Setup Tool (PST) is installed is necessary for the initial assignment of an IP
address to the SCALANCE W78x. For the other configuration settings, a computer
with Telnet or an Internet browser is necessary.
Operating Instructions SCALANCE W78x
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Description of the SCALANCE W78x
Possible Applications of the SCALANCE W78x
The SCALANCE W78x is equipped with an Ethernet interface and a wireless LAN
interface (SCALANCE W788-2PRO and SCALANCE W788-2RR: two WLAN
interfaces). This makes the device suitable for the following applications:
●
The SCALANCE W78x forwards data within its transmission range from one
node to another without a connection to wired Ethernet being necessary.
●
The SCALANCE W78x can be used as a gateway from a wired to a wireless
network.
●
The SCALANCE W78x can be used as a wireless bridge between two
networks.
●
The SCALANCE W78x can be used as a bridge between two different
frequencies.
Over and above this, due to the second interface of the SCALANCE W788-2PRO
and the SCALANCE W788-2RR, a redundant wireless link can also be
implemented between two SCALANCE W788-2xx modules.
Operating Instructions SCALANCE W78x
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Description of the SCALANCE W78x
Properties of the SCALANCE W78x
●
The Ethernet interface supports 10 Mbps and 100 Mbps, both in full and half
duplex as well as autocrossing and autonegotiation.
●
Operating the wireless interface in the frequency bands 2.4 GHz and 5 GHz.
●
The wireless interface is compatible with the standards IEEE 802.11a ,
IEEE 802.11b and IEEE 802.11g. In the 802.11a- and 802.11g mode, the
gross transmission rate is up to 54 Mbps. In turbo mode, the Transmission rate
is up to 108 Mbps (not permitted in all countries and modes).
Note
If the SCALANCE W78x is operated in turbo mode (A, G or H turbo), remember
that the channels adjacent to the set transmission channel are also used for
communication. Disturbances can therefore occur on these channels when there
are neighboring wireless systems. The data throughput can also be reduced if
there is competition for use of these channels.
●
As an expansion of the 802.11a mode, it is also possible to operated according
to the IEEE 802.11h standard. In 802.11h mode, the procedures Transmit
Power Control (TPC) and Dynamic Frequency Selection (DFS) are used in the
range 5.25 - 5.35 and 5.47 - 5.75 GHz. This means that in some countries, the
frequency sub-band 5.47 - 5.725 GHz can also be used outdoors with higher
transmit power.
TPC is a method of controlling the transmit power that is reduced to the
currently required level. With dynamic frequency selection (DFS), the access
point searches for primary users (for example radar) on a randomly selected
channel before starting communication. If signals are found on the channel,
this channel is disabled for 30 minutes and the availability check is repeated on
another channel.
The gross transmission rate is up to 54 Mbps in 802.11h mode.
●
Support of the authentication standards WPA, WPA-PSK, WPA2, WPA2-PSK
and IEEE 802.1x and the encryption methods WEP, AES and TKIP.
●
Suitable for inclusion of a RADIUS server for authentication.
●
Device-related and application-related monitoring of the wireless connection.
●
The interoperability of SCALANCE W78x devices with Wi-Fi devices of other
vendors was tested thoroughly.
●
Only for W78x-1RR/2RR: The iPCF mode provides an optimized data
throughput and minimum handover times.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
23
Description of the SCALANCE W78x
Note
In the client mode, you can use a SCALANCE W788-xRR as SCALANCE W7471RR and a SCALANCE W788-xPRO as SCALANCE W746-1PRO.
Note
For PNIO communication, we always recommend that you enable the iPCF mode.
The following table illustrates the differences between the various variants of the
SCALANCE W78x:
Type
No. of WLAN
interfaces
1
W7881PRO
W788-2RR
1
●
●
W7882PRO
W788-1RR
2
No. of
supported IP
nodes (3)
●
●
several
No. of supported
MAC nodes (3)
1
iPCF
mode (1)
Order no.
several
●
●
6GK57881ST00-2AA6
6GK57881ST00-2AB6 (2)
●
●
6GK57882ST00-2AA6
6GK57882ST00-2AB6 (2)
●
●
●
6GK57881SR00-2AA6
6GK57881SR00-2AB6 (2)
●
●
●
6GK57882SR00-2AA6
6GK57882SR00-2AB6 (2)
(1) The iPCF mode provides an optimized data throughput and minimum handover times.
(2) US variant
(3) In client mode.
In the SCALANCE W78x HELP function, you will find further information on the
configuration parameters of the relevant device.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
24
Description of the SCALANCE W78x
Ports
The SCALANCE W78x has the following ports:
●
RJ-45 hybrid connector on the front panel of the housing consisting of an RJ45 jack and 4-pin power socket. The RJ-45 connector supports the use of
switches capable of power-over-Ethernet according to 802.3af. The 4-pin
power socket allows power of 18 - 32 V DC.
●
An M12 connector as optional power supply (18 - 32 V DC).
●
Two R-SMA plugs (four R-SMA plugs on the SCALANCE W788-2PRO and
SCALANCE W788-2RR) for the attachment of antennas on the sides of the
device.
LED Display
On the front of the housing, several LEDs provide information on the operating
status of the SCALANCE W78x:
L 1
F
L 2
P 1
R 1
S C A L A N C E W 7 8 8 -1 x x
Figure 2-1
F
L 1
R 2
L 2
P 1
R 1
S C A L A N C E W 7 8 8 -2 x x
The LEDs of the SCALANCE W78x
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
25
Description of the SCALANCE W78x
The LEDs have the following significance:
LED
P1
Color
Meaning
Yellow
Data transfer over the Ethernet interface (traffic).
Green
There is a connection over the Ethernet interface. (Link)
Yellow flashing
PRESET-PLUG detected.
Yellow/green
PRESET function completed successfully.
Green flashing
"Flashing“ enabled over PST.
L2
Green
Power supply over the hybrid connector X1 (PoE or
energy contacts).
R1
Yellow
Data transfer over the first WLAN interface.
Green
Access Point Mode:
The WLAN interface is initialized and ready for operation.
Client Mode:
There is a connection over the first WLAN interface.
Green flashing
Access Point Mode:
The channels are scanned.
Client Mode:
The client is searching for a connection to an access point or
ad hoc network.
Green flashing
quickly
Access Point Mode:
With 802.11h the channel is scanned for one minute for
primary users before the channel can be used for data traffic.
Client Mode:
The client waits for the adopt MAC address due to the setting
<Auto Find Adopt MAC> and is connected to no access point.
Yellow flashing
PRESET-PLUG detected.
Green
3x fast,
1x long
flashing
Client Mode:
The client waits for the adopt MAC address due to the setting
<Auto Find Adopt MAC> and is connected to an access point.
Yellow/green
PRESET function completed successfully.
LED
R2
Color
Meaning
Yellow
Access Point Mode:
Data transfer over the second WLAN interface.
Client Mode:
The LED is always off because the 2nd interface is not
available in client mode.
Green
Access Point Mode:
The WLAN interface is initialized and ready for operation.
Client Mode:
The LED is always off because the 2nd interface is not
available in client mode.
Green flashing
Access Point Mode:
The channels are scanned.
Client Mode:
The LED is always off because the 2nd interface is not
available in client mode.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
26
Description of the SCALANCE W78x
LED
Color
Meaning
Green flashing
quickly
Access Point Mode:
With 802.11h the channel is scanned for one minute for
primary users before the channel can be used for data traffic.
Client Mode:
The LED is always off because the 2nd interface is not
available in client mode.
Yellow flashing
PRESET-PLUG detected.
Yellow/green
PRESET function completed successfully.
L1
Green
Power supply over the M12 connector (X2).
F
Red
An error occurred during operation with the
SCALANCE W78x.
Note
If the LED for the WLAN interface is not green when the device starts up, although
it is activated, the interface is not ready for operation (interface not initialized).
The main reason for this is usually that during commissioning of the
SCALANCE W78x products, a waiting time of up to 15 minutes can occur when the
ambient temperature is below zero. The device is ready for operation at the
specified ambient temperature as soon as the LED for the WLAN interface is lit
green.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
27
Description of the SCALANCE W78x
Configuration Information on the C-PLUG
The C-PLUG is used to transfer the configuration of the old device to the new
device when a device is replaced. When the new device starts up with the CPLUG, it then continues automatically with exactly the same configuration as the
old device. One exception to this can be the IP configuration if it is set over DHCP
and the DHCP server has not been reconfigured accordingly.
Reconfiguration is necessary if you use WDS or redundancy and use the MAC
addresses and not the sysNames. These functions are then based on the MAC
address that inevitably changes if a device is replaced.
Note
As soon as the device is started with a C-PLUG inserted, the SCALANCE W starts
up with the configuration data on the C-PLUG.
Replacing the C-PLUG
Follow the steps below to replace a C-PLUG in a SCALANCE W78x:
1
Turn off the power to the device.
2
Remove the old SCALANCE W78x from its mounting and open the sealing
screw on the rear with a coin or broad screwdriver.
3
Remove the C-PLUG.
4
Open the sealing screw of the new device in the same way and insert the CPLUG of the old device.
5
Replace the sealing screws of both devices.
If a new C-PLUG is inserted in a SCALANCE W78x, the configuration stored locally
on the SCALANCE W78x is saved to the C-PLUG. If an incorrect C-PLUG (for
example from another device or a damaged plug) is inserted, the
SCALANCE W78x signals an error with the red LED. The user then has the choice
of either removing the C-PLUG again or selecting the option to reformat the CPLUG and use it.
Note
It is necessary that the configuration on the C-PLUG was generated with a
firmware version ≤ the firmware version on the destination device.
Example: A C-PLUG with version V3.0 cannot be used for a SCALANCE W78x
with firmware version V2.4.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
28
Description of the SCALANCE W78x
Reset Button
The reset button is on the rear of the device directly beside the C-PLUG receptacle
and has several functions:
●
Restarting the device.
To restart the device, press the Reset button.
●
Loading new firmware
(Only if the normal procedure for loading firmware with Load & Save (see
Section. 6.2.10) does not work). This can, for example, occur if there was a
power down during the normal firmware update.
Follow the steps below to load new firmware:
1. Turn off the power to the device.
2. Now press the Reset button and reconnect the power to the device while
holding down the button.
3. Hold down the button until the red fault LED (F) starts to flash after
approximately 2 seconds.
4. Now release the button. The bootloader waits in this state for a new firmware
file that you can download by FTP.
5. Assign an IP address with the Primary Setup Tool.
6. Connect a PC to the SCALANCE W78x over the Ethernet interface.
7. Then enter the command "ftp <ip address>“ in a DOS box or use a different
FTP client. The new firmware should be located in the same folder as the
DOS box.
8. For the login and password, enter "siemens“. You can now transfer the new
firmware with the "put <firmware>“ command.
9. Once the firmware has been transferred completely to the device, the device
is restarted automatically.
●
Restoring the default parameters (factory default)
Caution: All previously made settings are lost!
First, turn off the power to the device. Now press the Reset button and
reconnect the power to the device while holding down the button. Hold down
the button until the red fault LED (F) stops flashing after approximately 10
seconds and is permanently lit. Now release the button and wait until the
fault LED (F) goes off again. The device then starts automatically with the
default parameters.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
29
Description of the SCALANCE W78x
●
Adopting the configuration data from the PRESET PLUG.
If the device restarts with a valid PRESET PLUG, by pressing the button
briefly, the configuration data is adopted by the device.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
30
Commissioning
Commissioning
3.1
3
Lightning Protection, Power Supply, and Grounding
Notes on Lightning Protection
!
Warning
Antennas installed outdoors must be within the area covered by a lightning
protection system. Make sure that all conducting systems entering from outdoors
can be protected by a lightning protection potential equalization system.
When implementing your lightning protection concept, make sure you adhere to the
VDE 0182 or IEC 62305 standard.
A suitable lightning conductor is available in the range of accessories of SIMATIC
NET Industrial WLAN:
Lightning Protector LP798-1PRO (order no. 6GK5798-1LP00-0AA6)
!
Warning
Installing this lightning protector between an antenna and a SCALANCE W788 is
not adequate protection against a lightning strike. The LP798-1PRO lightening
protector only works within the framework of a comprehensive lightning protection
concept. If you have questions, ask a qualified specialist company.
Note
The requirements of EN61000-4-5, surge test on power supply lines are met only
when a Blitzductor VT AD 24V type no. 918 402 is used
Manufacturer: DEHN+SÖHNE GmbH+Co.KG Hans Dehn Str.1 Postfach 1640 D92306 Neumarkt, Germany
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
31
Description of the SCALANCE W78x
Safety extra-low voltage (SELV)
!
Warning
The SCALANCE W78x devices are designed for operation with safety extra-low
voltage (SELV). Therefore only safety extra-low voltage (SELV) with limited power
source (LPS) complying with IEC950/EN60950/VDE0805 may be connected to the
power supply terminals.
The power supply unit to supply the SCALANCE W78x must comply with NEC
Class 2 (voltage range 18 - 32 V, current requirement 1 A)
The device may only be supplied by a power supply unit that meets the
requirements of class 2 power sources of the "National Electrical Code, table 11
(b)". If the power supply is designed redundantly (two separate power supplies),
both must meet these requirements.
Exceptions:
• Power supply with PELV (according to VDE 0100-410) is also possible if the
generated rated voltage does not exceed the voltage limits 25 V AC or 60 V DC.
• Power supply by a SELV power source (according to IEC 60950) or PELV
power source (according to VDE 0100-410) without limited power is also
permitted if suitable fire protection measures are taken by:
-
Installation in a cabinet or suitable enclosure
-
Installation is a suitably equipped, closed room
Grounding
Caution
There must be no potential difference between the following parts otherwise there
is a risk that the device will be destroyed:
• Ground potential of the power supply and ground potential of the antenna
ground.
• Ground potential of the power supply and a grounded housing.
• Ground potential of the power supply and the ground potential of the device
connected to Industrial Ethernet (for example PC, AS-300, AS-400 etc.)
Connect both grounds to the same foundation earth or use an equipotential
bonding cable.
Power over Ethernet
Connecting several SCALANCE W7xx devices with PoE supply from a common
PoE switch (acting as power supply) is not possible.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
32
Description of the SCALANCE W78x
3.2
Assembly and Connectors
Securing the Housing
There are two ways of securing the housing:
●
Use the holes in the housing to screw the device to the wall or on a horizontal
surface.
●
Install the SCALANCE W78x on a 90 mm long, vertically mounted piece of
standard rail (S7-300). In this case, the standard rail serves as an adapter
between the wall and SCALANCE W78x. If you want to install the SCALANCE
W78x along with a PS791-1PRO, a 150 mm long standard rail is necessary.
●
Make sure that there is suitable strain relief for the connecting cable.
Note
We recommend that you protect the device from direct sunlight with a suitable
shade. This avoids unwanted heating of the device and prevents premature ageing
of the device and cabling. When operating the SCALANCE W outdoors, make sure
that it is installed so that it is protected from UV and that the device is not exposed
to rain (installed under a roof).
Note
The minimum distance to fluorescent lamps should be 0.5 m. For cabinet
installation, we recommend that you do not install relays on the same or on directly
neighboring mounting rails.
Connectors for the Power Supply and for Ethernet
The SCALANCE W78x is attached to Ethernet via a hybrid socket on the front of
the housing (position A in Figure 3.1). This port also has contacts for the operating
voltage.
Note
If you do not use the hybrid socket, this must be covered with a protective cap,
otherwise IP 65 protection is lost. A suitable protective cap is available as an
accessory (order no. 6ES7194-1JB10-0XA0). If you do not use the M12 connector,
the supplied protective cap must also be fitted to retain the IP65 degree of
protection.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
33
Description of the SCALANCE W78x
D
A
B
Figure 3-1
C
Connectors of the SCALANCE W78x
As an alternative or in addition to this, you can also use the M12 plug for the power
supply (position B in Figure 3.1).
You can fit additional antennas to the sides of the SCALANCE W788-2PRO and
SCALANCE W788-2RR with an antenna cable (position C in Figure 3.1). If you
install the SCALANCE W78x in a cabinet, the antenna (position D in Figure 3.1)
must be unscrewed due to the restricted communication. In this case, the
connection is over detached antennas in store outside the cabinet. On the front
panel, there is also an identifier for the antenna connectors. The A connectors are
on the right-hand side and B connectors B on the left-hand side.
SIMATIC NET offers the IWLAN FRNC antenna extension cable for the connection
between the SCALANCE W78x and detached antenna. To avoid violating the
approvals, only antennas released for this product can be used.
Note
The distance between a pair of antennas for the first and second WLAN interface
must be at least 0.5 m.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
34
Description of the SCALANCE W78x
3.3
Cabling for Power Supply and Ethernet
3.3.1
General Notes
Suitable Cables
The following cable variants are available to connect a SCALANCE W78x to the
power supply and to Ethernet:
●
IE hybrid cable 2 x 2 + 4 x 0.34 (order no. 6XV1870-2J)
The two data wire pairs are separately shielded. This cable is particularly
suitable for assembly with the IE IP 67 hybrid connector.
●
IE FC TP standard cable 4 x 2 GP (order no. 6XV1870-2E)
IE FC TP flexible cable 4 x 2 GP (order no. 6XV1870-2H)
In these cable types, two wires are twisted. All four pairs of wires are inside a
common shield.
●
2 x 2 IE cable, the optional power supply (18 - 32 V DC) is over M12
connectors.
Cable Selection and Interference Exposure
A decisive factor in the selection of a cable type is the electromagnetic interference
to which the current lines between the power supply and the FC RJ-45 modular
outlet are subjected. Due to the separate shielding of the data wires, such
interference has less effect on the data transmission on a hybrid cable than on TP
standard cable or TP flexible cable.
A
Figure 3-2
B
C
Cabling a SCALANCE W7xx with Electromagnetic Interference between
the Power Supply and Modular Outlet
A
B
C
Power supply
FC RJ-45 modular outlet with power insert
SCALANCE W78x
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
35
Description of the SCALANCE W78x
3.3.2
Assembling an IE Hybrid Cable 2 x 2 + 4 x 0.34 with an IE IP 67
Hybrid Connector
Remove the two inner shells of the
universal sealing ring to adapt it to
the diameter of the hybrid cable.
Push the bushing, washer, adapted
universal sealing ring and the
housing over the cable jacket.
Remove the following lengths of
cable jacket and shield braid:
• 25 mm for the power leads.
• 30 mm jacket for the data leads
(shorten the braid by 11 mm).
Cut off the filler at the height of the
cable jacket.
Arrange the data leads according to
the color codes on the splice
element. The following table shows
the assignment of the data leads.
Contact and color assignment of the
splice element.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
36
Description of the SCALANCE W78x
Wire color code
(standard)
White
Blue
Yellow
Orange
Connector color
code (Siemens IE)
White
Blue
Yellow
Orange
Siemens IE FC RJ45 socket
(reference)
3
6
1
2
Insert the all the data leads at the
same time into the splice element is
far as they will go.
Close the splice element and RJ-45
data module until they lock together.
Insert the data module and the
splice element into the supplied IDC
assembly tool.
Press the data module and the IDC
assembly tool together to establish
the installation piercing connection.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
37
Description of the SCALANCE W78x
Remove the assembled data
module from the IDC assembly tool.
Position the top shield plate and
press it over the cable shield.
Position the lower shield plate and
press it and the upper shield plate
together until they lock together with
an audible "click".
Arrange the power leads and insert
them as far as they will go into the
hinge elements of the isolation body.
The following table shows the
assignment of the power leads.
Wire color code
(standard)
Power supply insert
module
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
Brown
Brown
Black
Black
24 V
24 V
Ground
Ground
1
2
3
4
38
Description of the SCALANCE W78x
Press each individual hinge element
together with the integrated IDC
contact.
Recommendation: Use a small
slotted screwdriver (max. 3.5 mm)
as a lever.
Push the housing over the
assembled data module and the
insulator body until they lock
together (there should be an audible
click).
Tighten the cable gland. We
recommend an open ring key with a
size of 21 mm.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
39
Description of the SCALANCE W78x
3.3.3
Assembling an IE FC TP Standard Cable 4 x 2 GP or IE FC TP
Flexible Cable 4 x 2 GP with an IE IP 67 Hybrid Connector
Remove the two inner shells of the
universal sealing ring to adapt it to
the diameter of the hybrid cable.
Push the bushing, washer, adapted
universal sealing ring and the
housing over the cable jacket.
Remove the following lengths of
cable jacket and shield braid:
• 25 mm for the power leads.
• 30 mm for the data leads.
To achieve good shielding, the shield
braid must be alt least 30 mm long.
Arrange the data leads according to
the color codes on the splice
element. The following table shows
the assignment of the data leads.
Wind the shield braid around the data
leads. As a result, the shielding of the
cable has contact to the shield plate
of the splice element that will be fitted
later.
Contact and color assignment of the
splice element.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
40
Description of the SCALANCE W78x
Color Coding of the
Standard Cable
White /
Orange *
Orange
White /
Green *
Green
Connector color
code (Siemens IE)
White
Blue
Yellow
Orange
3
6
1
2
Siemens IE FC RJ45 socket (reference)
* White wire of the particular pair.
Insert the all the data leads at the
same time into the splice element is
far as they will go.
Close the splice element and RJ-45
data module until they lock together.
Insert the data module and the splice
element into the supplied IDC
assembly tool.
Press the data module and the IDC
assembly tool together to establish
the installation piercing connection.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
41
Description of the SCALANCE W78x
Remove the assembled data module
from the IDC assembly tool.
Position the top shield plate and
press it over the cable shield.
Position the lower shield plate and
press it and the upper shield plate
together until they lock together with
an audible "click".
Arrange the power leads and insert
them as far as they will go into the
hinge elements of the isolation body.
The following table shows the
assignment of the power leads.
Wire color code
(standard)
Power supply insert
module
White /
Blue *
Blue
White
brown *
Brown
24 V
24 V
Ground
Ground
1
2
3
4
* White wire of the particular pair.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
42
Description of the SCALANCE W78x
Press each individual hinge element
together with the integrated IDC
contact.
Recommendation: Use a small
slotted screwdriver (max. 3.5 mm) as
a lever.
Push the housing over the
assembled data module and the
insulator body until they lock together
(there should be an audible click).
Tighten the cable gland. We
recommend an open ring key with a
size of 21 mm.
3.3.4
Pinout of the M12 Connector
X2 Socket
PIN 1
24 V DC
PIN 2
--
PIN 3
Ground
PIN 4
--
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
43
Description of the SCALANCE W78x
3.4
Commissioning with the PRESET PLUG
How It Works
With the PRESET PLUG, it is simple to assign a configuration to WLAN devices
such as access points, ECMs or IWLAN/PB links. You transfer an existing
configuration to any number of other devices using the PRESET PLUG. This
procedure is particularly useful when commissioning a lot of WLAN clients with the
same parameter settings because you do not need to set parameters for each
client manually.
Note
To avoid duplicating IP addresses, the IP parameters are not changed but are
retained when you use the PRESET PLUG.
If the PRESET PLUG is inserted, the WLAN interface of the device is deactivated.
WLAN operation with a PRESET PLUG insert it is not possible.
Note
With a version V3.0 AP or older, it is not possible to create a PRESET-PLUG for
the IWLAN/PB-Link version V1.1. Please use a version V2.4 AP or older. If you
update the IWLAN/PB Link to firmware V1.2, the configuration is available again on
a PRESET PLUG (created with V3.1).
Creating a Configuration with a new PRESET-PLUG
Follow the steps below to save a configuration on a PRESET PLUG:
1.
Insert the PRESET PLUG in the C-PLUG slot of a powered-down device with
the required configuration and then turn on the device.
2.
Start Web Based Management and select the System > C-PLUG menu.
3.
In the Modify C-PLUG list box, select the Create PRESET-PLUG entry.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
44
Description of the SCALANCE W78x
4.
In the PRESET PLUG for box, specify the device for which you want to create
the PRESET PLUG.
Note
A PRESET PLUG for configuring a SCALANCE W78x in Access Point mode
must be created with a SCALANCE W78x because a SCALANCE W74x does
not have all the configuration settings required for the W78x.
5.
Click on the Modify button to transfer the configuration of the device to the
PRESET PLUG.
6.
Turn the device off and remove the PRESET PLUG.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
45
Description of the SCALANCE W78x
Changing a used PRESET PLUG
1. Insert the PRESET PLUG in the C-PLUG slot of a powered-down SCALANCE
W7xx and then turn on the device. The P1 and R1 LEDs flash yellow to signal
that the PRESET PLUG was detected.
2.
Start Web Based Management, there you will see the current settings of the
PRESET PLUG. Make the required changes to the configuration.
3.
In the Modify C-PLUG list box, select the Create PRESET-PLUG entry.
4.
In the PRESET PLUG for box, specify the device for which you want to create
the PRESET PLUG.
5.
Click on the Modify button to transfer the configuration of the device to the
PRESET PLUG.
6.
Turn the device off and remove the PRESET PLUG.
Using the PRESET PLUG to commission a device
Note
To work correctly, the PRESET PLUG must have a content that matches the target
device.
1.
Insert the PRESET PLUG in the C-PLUG slot of the device to which you want
to assign a configuration.
2.
Turn on the power to the device. The LEDs P1 and R1 (and R2 on a
SCALANCE W7xx with two wireless interfaces) flash yellow to signal that the
PRESET PLUG was detected.
3.
Press the reset button beside the C-PLUG briefly to save the settings of the
PRESET PLUG on the device.
4.
When all the data has been transferred from the PRESET PLUG to the
device, the LEDs stop flashing and are permanently lit.
5.
Turn the device off and remove the PRESET PLUG.
Note
The next time the device starts up, it uses the settings from the PRESET PLUG
and the previous IP configuration.
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Configuring the IP Address with the
Primary Setup Tool
4.1
4
Introduction
Primary Setup Tool on CD and the Internet
The Primary Setup Tool is on the CD that ships with the SCALANCE W78x.
The Primary Setup Tool is also available from Siemens Automation and Drives
Service & Support on the Internet under entry ID 19440762. You will find this entry
under the following URL:
http://support.automation.siemens.com/WW/view/en/19440762
Note
On the CD and on the Internet, you will find the latest version of the Primary Setup
Tool (at the time of release of this document, Version 3.1). Make sure that you use
the version V3.1 or higher for the SCALANCE W78x.
Operating Systems Supported
The Primary Setup Tool can be installed and used with the following operating
systems:
●
Windows XP Professional
●
Windows 2000 Professional SP2
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Configuring the IP Address with the Primary Setup Tool
DLC Protocol
The Primary Setup Tool uses the DLC protocol for communication with the
modules. Depending on the operating system you are using, you must work
through the following steps before you can use the DLC protocol:
●
Windows XP Professional
The DLC protocol is not supplied with Windows XP and must be installed and
activated separately.
●
Windows 2000 Professional SP2
The DLC protocol is supplied with Windows 2000 but must be added to the
active protocols.
Note
The sections on installing the DLC protocol are relevant only for older firmware
versions < V2.3.
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4.2
Installation of the DLC Protocol in Windows XP
Professional
Extracting the Archive File
The files for installing the DLC protocol are in the self-extracting ZIP archive
pst_install.exe. Follow the steps below to extract the files from the archive:
1.
Double-click on the file name pst_install.exe in the Windows Explorer or start
the program using the Windows menu command Start > Run.
2.
In the dialog box of the extraction program, select the folder into which you
want to extract the files and click on the Extract button.
Installation
Follow the steps below to install the DLC protocol on your computer:
1.
Double-click on the setup.exe file.
2.
In the Choose Setup Language dialog, select the language you want to use.
3.
Click on the Next button in the first dialog.
4
In the next dialog, select the folder in which you want to install the program
and click on the Next button to confirm your selection.
5.
Close the last dialog of the installation program by clicking on the Finish
button.
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4.3
Installation of the DLC Protocol in Windows 2000
Professional SP2
Follow the steps below to install the DLC protocol on your computer:
1.
Select the menu command Start > Settings > Control Panel >Network and
Dial-Up Connections.
2.
Select the connection to your Ethernet communications module.
3.
Right-click to open the context menu and select Properties.
4.
Click on the Install... button in the General tab.
5.
In the Select Network Component Type dialog, select the entry Protocol and
click the Add... button.
6.
In the Network Protocols window, select the entry DLC Protocol and confirm
by clicking OK.
7.
Close the properties dialog by clicking the OK button.
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4.4
Installing the Primary Setup Tool
Procedure
Follow the steps below to install the Primary Setup Tool on your computer:
1. Double-click on the file name setup.exe in the Windows Explorer or start the
program using the Windows menu command Start > Run.
2. In the Choose Setup Language dialog box, select the language in which you
want to run the installation.
3. The first dialog box of the Installation Wizard opens. Click on the Next button.
4. The dialog box for selecting the installation folder opens. Click on the Next
button if you want to accept the default C:\Program Files\Siemens\Primary
Setup Tool\. If you want to use a different folder, you can open a dialog box to
select the folder by clicking the Browse button.
Start the installation by clicking the Next button.
5. If the DLC protocol is not installed on your computer, the Information dialog
opens referring you to the ReadMe file. Confirm the dialog with OK and install
the DLC protocol later as described in the ReadMe file.
6. A final dialog box informs you that the installation was successful. Click on the
Finish button to close this dialog box.
After installation of PST V3.1, start the tool with Start > SIMATIC > Primary Setup
Tool.
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4.5
Working with the Primary Setup Tool
Selecting the Language
After starting the Primary Setup Tool, a dialog opens in which you select the
language for the program. You can also set the language in the Settings >
Language menu.
Selecting the Network Adapter
If there is more than one network adapter in your computer, you can open the
Settings > Network Adapter menu and specify which adapter is used by the
Primary Setup Tool. This menu displays a maximum of four network adapters.
Browsing the Network
Before you assign IP addresses with the PST, you must first locate the
configurable devices in the network. Start this search with the steps outlined below:
●
Select the Network > Browse menu command.
●
Press the F5 key.
●
Click on the magnifier icon in the toolbar below the menu bar.
While the Primary Setup Tool browses the network, the Browse Network dialog is
displayed with a progress bar. On completion of the search, the Primary Setup Tool
displays a list with all the devices it has found in the left-hand pane.
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Configuring a Module
If you click an entry in the list, the Primary Setup Tool displays information on the
selected device in the right-hand pane.
Follow the steps below to configure a device:
1.
Click on the plus symbol in front of the device symbol or double-click on the
device symbol to display all interfaces of the device.
2.
Click on the interface you want to configure. The Primary Setup Tool displays
the input dialog for the configuration data in the right-hand pane of the
program window. Depending on the selected settings, some text boxes or
check boxes may be disabled. The MAC address box is always disabled
because this address is a property of the device that cannot be modified.
Moreover, the Client-ID and DNS parameters are not supported by the
SCALANCE W7xx.
3.
Decide how the device will obtain its IP address:
● Dynamically from a DHCP server:
Select the Obtain IP address from DHCP server option button.
●
Manual assignment by the user:
Select the Assign IP parameters option button.
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4.
Make the following entries if you have decided to assign the IP address
manually:
●
Enter the IP address for the device in the IP Address box. In each part of
the address separated by the periods, you can enter a number between 0
and 255; the program does not accept any other numbers.
●
Enter the subnet mask in the Subnet Mask box.
●
If necessary, select the Use router check box and enter the IP address of
the router in the text box. Router information is necessary if the computer
on which you are creating the configuration is not in the same subnet as
the device to be configured.
Downloading Configuration Data to the Module
Follow the steps below to transfer the configuration data to the device:
1.
Select the module you want to configure in the left pane of the program
window. As long as an interface is selected and the input dialog for the
configuration data is displayed, no download of the configuration data is
possible.
2.
Start the download by following the steps outlined below:
●
Select the Module > Download menu command.
●
Click on the second button from the left in the toolbar.
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Starting Web Based Management
INCs (Industrial Network Components) such as a SCALANCE W7xx include Web
Based Management. Select the device you want to configure with Web Based
Management and follow the steps below to start Web Based Management:
● Select the menu command Module -> Start INC Browser.
● Click on the third icon from the left in the toolbar (module with four blue
wires).
If the Module > Start INC Browser and the module icon are disabled, there is no
Web Based Management for the selected module.
Removing a Module
You can remove a module from the list in the left-hand pane of the program
window by selecting the Module > Remove Module menu command. Using this
menu command has no effect on the existence of a module in the network; if you
browse the network again, all modules are displayed again.
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4.5.1
Primary Setup Tool via the Command Line
Syntax
You can also use the Primary Setup Tool from the command line of a DOS prompt.
The syntax is as follows; optional parameters are shown in square brackets:
s7wnpstx MAC address -DHCP[=client ID]
s7wnpstx MAC address -RESET
s7wnpstx MAC address IP address subnet mask [router address]
s7wnpstx -NAME=station name [index network adapter][INC]
The following table explains the parameters:
Command
Description
Comment
MAC address
The MAC address of the module to
be configured.
-DHCP
Specifies that the IP address is
obtained from a DHCP server.
client ID
A unique identifier for the device. If
this parameter is not specified, the
Primary Setup Tool uses the MAC
address as the ID.
-RESET
Sets the IP address to 0.0.0.0 .
IP address
The new IP address of the module to
be configured.
subnet mask
The new subnet mask of the module
to be configured.
Router address
The new IP address of the default
router.
-NAME
Parameter for setting the station
name.
station name
The station name assigned to the
module. Maximum length 255
characters (letters, numbers, slash,
hyphen, and underscore).
Index network adapter
The index of the network adapter.
The default is "0".
Optional.
INC
Identifier for a network component.
Optional.
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Optional.
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Configuration Using the Wizards of
Web Based Management
5.1
5
Introduction
Principle of Web Based Management
The SCALANCE W78x has an integrated HTTP server for Web Based
Management. If the SCALANCE W78x is accessed by an Internet browser, it
returns HTML pages to the client computer depending on user input.
Users enter the configuration data in the HTML pages sent by the
SCALANCE W78x. The SCALANCE W78x evaluates this information and
generates response pages dynamically.
The great advantage of this method is that apart from a Web browser, no special
software is required on the client.
Requirements for Web Based Management
Once you have assigned an IP address with the Primary Setup Tool, you can
continue to configure the device with Web Based Management.
To use Web Based Management, you should ideally have a wired network
connection between the SCALANCE W78x and the client computer. In principle, it
is possible to use Web Based Management over a wireless network, however the
SCALANCE W78x can be set so that access over a wireless network is disabled.
We recommend that you use the Microsoft Internet Explorer Version 5.5 or higher
or Mozilla Firefox Version 1.5 or higher.
All the pages of Web Based Management require JavaScript. Make sure that your
browser settings allow this.
Since Web Based Management is HTTP-based on, you must allow access to Port
80 or Port 443 for HTTPS if you have a firewall installed.
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Note
The screenshots in this section were created using the Microsoft Internet Explorer
version 6.0. If you use a different browser (for example Mozilla), the appearance of
the menus may differ.
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5.2
Starting Web Based Management and Logging On
Procedure
1. In the address box of the Web browser, enter the IP address or the URL of the
SCALANCE W78x. If there is a problem-free connection to the
SCALANCE W78x, the Logon dialog of Web Based Management is displayed:
2. In the "User Name" list box, select the "Admin" entry if you want to change
settings of the SCALANCE W78x (read and write access). If you select the
"User" entry, you only have read access to the configuration data of the
SCALANCE W78x.
3. Enter your password. If you have not yet set a password, the default passwords
as shipped apply: Enter admin if you selected "admin" as the user name or user
if you selected "user".
4. Click on the "Log On" button to start the logon.
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5.2.1
Connection over HTTPS
Description
Web Based Management also allows you to connect to the device over the secure
connection of the HTTPS protocol.
Enter https:// in the address field of the Internet browser and the IP address of the
SCALANCE W7xx and confirm with Enter. The warning Security Alert is displayed
and asks you whether you want to continue the action. Confirm with YES. The
Login dialog of Web Based Management opens.
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5.3
Selecting the Wizards
Basic Wizard, Security Wizard and iPCF-Wizard
Web Based Management provides several wizards that allow straightforward
commissioning without detailed knowledge of wireless technology. A wizard
consists of a series of dialogs in which you enter the basic configuration data.
There is a wizard for general settings to ensure the basic functionality of the
SCALANCE W78x. The wizard for the security settings supports you when setting
security-related parameters. A further wizard is available in client mode to
configure the iPCF mechanism (industrial Point Coordination Function).
Wizard Status
After selecting the "Wizards" menu on the left-hand side of the dialog, the status of
the wizards is displayed. If you have worked through a wizard completely, Done is
displayed as the status. If you have worked through all wizards, the Wizards entry
moves to the bottom end of the menu.
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Note
Some pages of the Wizards have a different content in access point mode and
client mode. In this case, there is a separate description for the alternatives.
You can specify the mode in the System menu.
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5.4
Basic Wizard
5.4.1
IP Settings
Description
One of the basic steps in configuration of an Ethernet device is setting the IP
address. The IP address identifies a device in the network uniquely. On this page,
you enter the information for IP configuration of the SCALANCE W78x.
Specified IP Address / DHCP Server Option buttons
There are two methods of assigning IP addresses to devices: The IP address can
be set as a fixed permanent address or can be obtained dynamically from a DHCP
server. Select "Specified IP Address" if you do not use a DHCP server.
IP Address input box
The IP address of the SCALANCE W78x. Here, you enter an address that is
unique within the network.
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Subnet Mask input box
The subnet mask specifies the range of addresses within which communication
can take place.
The four numbers of an IP address separated by periods are interpreted as a bit
pattern. If a one is set at a bit position within the subnet mask, this means that only
devices with an IP address the matches the IP address of the SCALANCE W78x
Management Agent at this bit position can communicate with the
SCALANCE W78x.
Example
Let us assume that the IP address of the SCALANCE W78x is set to
192.168.147.189 and the subnet mask is set to 255.255.255.0. The bit pattern for
255 is 1111 1111. This means that the bit pattern of the first number of the IP
address of a communication partner must match the bit pattern of the SCALANCE
W78x exactly at this point. The same applies to the second and third parts of the IP
address. The IP address of a communication partner must therefore start with
192.168.147. The bit pattern of 0 is 0000 0000. This means that the bit pattern of
the last part of the IP address of the partner device does not need to match the
address of the SCALANCE W78x at any point; in other words, it can be any
number.
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5.4.2
System name
Description
The device name also identifies a network node but means more to the user than
the IP address.
System Name text box
In this box, you enter the device name for your SCALANCE W78x. This parameter
corresponds to the sysName SNMP parameter. The device name can be up to a
maximum of 255 characters long. If you also want to use this parameter for WDS
or redundancy, the maximum length is 32 characters.
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5.4.3
Country Code
Note
The correct country setting is mandatory for operation complying with the
approvals. Selecting a country different from the country of use can lead to legal
prosecution!
Description
Some countries have different frequency band divisions for WLAN communication.
The regulations for maximum output power also differ from country to country.
When you configure the SCALANCE W78x, you must specify which local
regulations are relevant for your location. You do this with the Country code
parameter.
Country code list box
In this list box, you select the country in which the SCALANCE W78x will be
operated. You do not need to know the data for the specific country, the channel
division and output power are set by the SCALANCE W78x according to the
country you select.
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5.4.4
Wireless Settings in Access Point Mode
Description
On this page, you specify the configuration of the wireless network. This includes
the network name and the transmission mode. If you are configuring the
SCALANCE W788-2PRO and SCALANCE W788-2RR models, this page appears
a second time to allow you to configure the second wireless adapter. You can
make different settings for "WLAN1" and "WLAN2".
SSID text box
Enter the name of your network in this box. The SCALANCE W78x allows all
characters except the percent character for the SSID. To ensure compatibility with
partner devices, you should, however, not use any characters that are peculiar to a
particular language (for example special German characters ä, ö etc.). The string
for SSID can be a maximum of 32 characters long.
Wireless Mode list box
Select a wireless mode that is supported by all partner devices. On the
SCALANCE W788-2PRO and SCALANCE W788-2RR, it may be a practical to set
a different transmission mode for each wireless adapter to allow optimum support
of different clients. The effect of the 802.11.b + g setting is that all the settings in
the Advanced G menu are taken into account as far as possible but that
compatibility with devices conforming to IEEE 802.11 b guaranteed.
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5.4.5
Wireless Settings in Client Mode
Description
In the Client mode, there is also the check box Connect to ANY SSID. The other
settings correspond to those of the access point mode.
Connect to ANY SSID Check Box
When this check box is selected, the client connects to the access point that allows
the best possible data transfer and to which a connection is permitted based on the
security settings.
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5.4.6
Adopt MAC Address Settings (Client Mode only)
Assigning the MAC Address
A MAC address must be specified for the device connected to the Ethernet port of
the SCALANCE W78x client before it can be reached. This MAC address is used
by the client for wireless communication with the access point.
●
If there is precisely one MAC address to be served downstream from the client,
there are two ways of doing this:
– Automatically, the client adopts the source MAC address of the first frame
that it receives over the Ethernet interface.
– Manual entry by the user.
These settings have no effect on communication with standard Wi-Fi devices.
●
If up to eight MAC addresses need to be served downstream from the client,
the following setting is available for SCALANCE W746-1PRO and SCALANCE
W747-1RR:
– Layer 2 Tunneling
This setting meets the requirements of industrial applications in which MAC
address-based communication with several devices downstream from the client
is required. Clients with this setting cannot connect to standard Wi-Fi devices
and SCALANCE W access points with firmware V3.0 or older.
Note
The layer 2 tunneling setting is available only with the following model variants:
• SCALANCE W78x in client mode
• SCALANCE W746-1PRO
• SCALANCE W747-1RR
The SCALANCE W746-1PRO and SCALANCE W747-1RR devices can also
provide access to a wireless network for several Ethernet devices (IP mapping).
For an access point with MAC filtering, only one MAC address is visible to the
SCALANCE W78x client, there can be no filtering according to the MAC addresses
of the Ethernet devices.
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MAC mode list box
Here, select how the SCALANCE W78x client obtains a MAC address. The
following are possible:
Auto find 'Adopt MAC'
The SCALANCE W78x client automatically adopts the source MAC address
of the first frame that it receives over the Ethernet interface.
Set 'Adopt MAC' manually
You enter the MAC address manually.
Adopt own MAC (not for SCALANCE W744-1PRO)
The SCALANCE W74x uses the MAC address of the Ethernet interface for
the WLAN interface.
Layer 2 Tunneling (not for SCALANCE W744-1PRO)
SCALANCE W74x uses the MAC address of the Ethernet interface for the
WLAN interface. The network is also informed of the MAC addresses
connected downstream from the SCALANCE W746-1PRO or
SCALANCE W747-RR.
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Adopt MAC text box
If the Set 'Adopt MAC' manually check box is selected, you will need to enter the
MAC address of the device connected to the SCALANCE W78x client over
Ethernet here.
If you do not want layer 2 communication to be handled over the SCALANCE
W78x client, but only send higher IP-based frames to one or more connected
devices, you can also leave the default setting Adopt Own Mac. In this mode, the
client registers with the MAC address of its Ethernet adapter. The IP packets are
broken down according to an internal table and forwarded to the connected
devices.
The Adopt MAC box is hidden in the "Auto find 'Adopt MAC' " and "Layer 2
Tunneling" modes.
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5.4.7
Channel Settings (only in access point mode)
Description
The SCALANCE W78x uses a specific channel within the frequency band for
communication. You can either set this channel specifically or configure the
SCALANCE W78x so that the channel is selected automatically. A specific channel
must be set, for example, in the following situations:
●
Communication suffers from interference from another device (for example
microwaves) or another wireless network.
●
Use of the redundancy function. In this case, two well spaced channels or two
different frequency bands must be selected.
●
Use of WDS. In this case, select a problem-free channel that is also used by
the WDS partner.
Auto Channel Select Check Box
Select this check box if you do not have any particular requirements regarding
channel selection.
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Radio Channel list box
Here, you select a channel suitable for your application. You can only select from
this list if the Auto Channel Select check box is not selected. The entries in the list
box depend on the previous selection made in the Country code box and on the
mode (IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11h).
Note
If your SCALANCE W78x has a second wireless adapter (SCALANCE W7882PRO, SCALANCE W788-2RR), this adapter is deactivated when the device is
shipped. You can use the second wireless adapter after you have selected the
channels.
Notice
When operating a second wireless adapter, make sure that there is adequate
channel spacing.
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5.4.8
Finish
Description
This page displays the parameters you have selected when you have completed all
the entries for the basic configuration. The setting Adopt MAC Address and the
note on the iPCF Wizard is displayed only in client mode.
If you use a SCALANCE W788-1RR or SCALANCE W788-2RR in client mode and
want to operate it in a iPCF network, you can enter the necessary settings using
the iPCF Wizard link.
Finish button
Click this button to close the Basic Wizard and to log on again with the modified IP
address. Alternatively, click on the Security Wizard link to change to the security
settings.
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5.5
Security Wizard
Introduction
With the Security Wizard, you can specify security-related parameters without
detailed knowledge of security technology in wireless networks.
Note
The SCALANCE W78x can be operated even if you do not set the security
parameters. Depending on the properties of your network, there is then, however,
an increased risk of unauthorized access. You should therefore work through all
the pages of the Security Wizard, so that you have at least basic security functions.
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5.5.1
Security Settings
Password
First, set a new admin password. Enter the string twice in the text boxes of this
page. The password can be up to a maximum of 31 characters long.
Until you set a password, the defaults set in the factory apply: The default
password for the admin user is admin. You can use the wizards only if you log on
as administrator.
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5.5.2
Security Settings for Management Interfaces
Protocols for Configuration
In this page, you specify the protocols with which you can access the configuration
of the SCALANCE W78x. All protocols with a selected check box can be used for
configuration. You should only select protocols that you actually use.
The protocol settings only take effect after exiting the Security Wizard and
restarting. Even after selecting the Web Based Management entry, you still have
the option of returning to earlier pages or exiting the wizard.
Specifying the Network Type for Configuration
It is easier to restrict access to a wired network than to a wireless network. Web
Based Management allows access to the SCALANCE W78x for configuration to be
restricted to computers linked to the SCALANCE W78x with a cable. If you require
this, check the box at the bottom of the page.
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5.5.3
Security Settings for SNMP Protocol
Access Permissions using the SNMP Protocol
When using the SNMP protocol, you specify access permissions by means of the
community string. A community string effectively combines the function of user
name and password in one string; different community strings are defined for read
and write permissions. More complex and more secure authentications are
possible only in some SNMPv2 variants and in SNMPv3.
To preserve security, you should not use the default values public or private.
Write Community String text box
Here, you enter the write community string (maximum of 63 characters) for the
SNMP protocol.
SNMP Read Only Check Box
If you select this check box, only read access is possible with the SNMP protocol
V1 or V2c.
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5.5.4
Security Settings for WLAN (Page 1, only in access point mode)
Description
On this page, you make the security settings, including, for example, the
authentication and encryption. If you are configuring the SCALANCE W788-2PRO
or SCALANCE W788-2RR models, these pages appear a second time to allow you
to configure the second wireless adapter. You can make different settings for
WLAN1 and WLAN2.
Network-Specific Security Settings
On the first page of the security settings, you select settings that apply regardless
of protocol-specific restrictions. The basic measures for securing a network against
unauthorized access involve
●
allowing only certain clients (those that have enter the network name (SSID) of
the AP) to communicate with the SCALANCE W78x.
●
excluding clients that communicate over wireless connections from the wired
part of the network.
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SSID text box
Enter the name of your network in this box (maximum of 255 characters, 32
characters if you use the redundancy function). To avoid any possible conflicts with
settings for a specific locale on the computer, the name should not include any
special German characters (ö, ä etc.).
Suppress SSID broadcasting check box
An entry in this check box means that the SSID is not visible for other device. As a
result, only stations for which the same network name was configured as for the
SCALANCE W78x can connect to the SCALANCE W78x.
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Note
Since no encryption is used for the SSID transfer, this function can only provide
basic protection against unauthorized access. The use of an authentication method
(for example WPA (RADIUS) or WPA-PSK if this is not possible) provides higher
security. You must also expect that certain end devices may have problems with
access to a hidden SSID.
Inter SSID Communication check box
Selecting this check box allows communication between WLAN clients registered
at different SSIDs of an access point.
Example 1:
A SCALANCE W788-2xx was defined with different SSIDs for
each of the wireless cards.
Example 2:
A SCALANCE W788-1xx is used with multiple SSIDs.
Note
On a SCALANCE W788-2xx, the Inter SSID communication function must be
enabled on both WLAN interfaces or on all VAPs to allow communication between
the clients with different SSIDs.
Note
If VLANs are configured for the SSIDs, this setting can prevent communication
between the SSIDs according to the VLAN rules.
Intracell Communication list box
●
Intracell blocking
This setting prevents WLAN client communication within an SSID.
●
Ethernet blocking
This setting prevents WLAN client communication over the Ethernet interface
of the access point.
●
Disabled
This setting enables both WLAN client communication within an SSID as well
as WLAN client communication over the Ethernet interface.
To illustrate the situation, there is an overview of the effects of the Inter SSID
Communication and Intracell Communication settings below.
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Settings
Inter SSID
communication
Intracell
Communication
Possible Communication
within
an SSID
Enabled
Disabled
Enabled
Intracell
blocking
Enabled
Ethernet
blocking
x
Disabled
Disabled
x
Disabled
Intracell
blocking
Disabled
Ethernet
blocking
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with
another
SSID
to the Ethernet
network
x
x
x
x
x
x
x
x
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5.5.5
Security Settings for WLAN (Page 2)
Predefined Security Levels
Authentication and encryption are tried and tested methods for increasing security
in networks. Web Based Management provides five predefined security levels that
specify suitable methods.
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The following table indicates what the various security levels involve.
Visible in Level
Wizard
Authentication
Encryption
Type of
Encryption
Encryptio
n key
source
None
Open System
disabled
without
not
applicabl
e
None
Open System
enabled as option WEP / AES
local
x
Low
Shared Key
enabled
WEP / AES
local
x
Medium IEEE 802.1x
enabled
WEP
Server
x
High
WPA-PSK
(preshared Key)
enabled
TKIP / AES
local
Highest
WPA (Radius)
enabled
TKIP / AES
Server
x
High
WPA2-PSK
(preshared Key)
enabled
TKIP / AES
local
x
Highest
WPA2 (Radius)
enabled
TKIP / AES
Server
High
WPA-Auto-PSK
(preshared Key)
enabled
TKIP / AES
local
Highest
WPA-Auto
(Radius)
enabled
TKIP / AES
Server
Authentication
Authentication basically means that some form of identification is required.
Authentication therefore protects the network from unwanted access. In the
Security Level box, you can choose between the following types of authentication:
●
None (Open System)
There is no authentication. Encryption with a fixed (unchanging) key can be
selected as an option. Based are the key length, you can choose between
WEP and AES. To do this, define a key in the Keys menu. 5 or 13 ASCII or 10
or 26 hexadecimal characters specify a weak WEP key (40/104 bits). 16 ASCII
or 32 hexadecimal characters, on the other hand, define a strong AES key (128
bits). Then select Encryption in the Basic WLAN menu.
●
Low (Shared Key)
In Shared Key authentication, a fixed key is stored on the client and access
point. This is then used for authentication and encryption. In this case, you will
have to store a WEP or AES key after selecting Low (Shared Key).
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●
Medium (IEEE 802.1x)
Port-related access check over an external RADIUS server (IEEE 802.1x). With
this method, the client logs on at a RADIUS server based on a certificate (EAPTLS) or a combination of user name and password (EAP-PEAP or EAP-TTLS /
internal authentication method MSCHAPv2). As an option, the RADIUS server
then identifies itself to the client using a certificate. Following successful
authentication, the client and RADIUS server generate key material that is
used for data encryption. WEP is used as a weak encryption method.
●
High (WPA2-PSK)
WPA2-PSK is based on the WPA2 standard, WPA authentication, however,
operates without a RADIUS server. Instead of this, a key (pass phrase) is
stored on every client and access point and this is used for authentication and
further encryption. AES or TKIP is used as the encryption method, AES
represents the standard method.
●
Highest (WPA2)
WPA2 (Wi-Fi Protected Access 2) is a further development of WPA and
implements the functions of the IEEE 802.11i security standard. WPA2 uses
the additional encryption protocol CCMP that allows fast roaming in mobile ad
hoc networks with its preauthentication. A client can log on in advance and
several access points so that the normal authentication can be omitted.
A RADIUS server is used to authenticate the client with an access point. The
client logs on at a RADIUS server based on a certificate (EAP-TLS) or a
combination of user name and password (EAP-PEAP or EAP-TTLS / internal
authentication method MSCHAPv2). As an option, the RADIUS server then
identifies itself to the client using a certificate. Following successful
authentication, the client and RADIUS server generate key material that is
used for data encryption. AES or TKIP is used as the encryption method, AES
represents the standard method.
●
High (WPA-Auto-PSK)
Setting with which an access point can process both the WPA-PSK as well as
WPA2-PSK type of authentication. This is necessary when the access point
communicates with different clients, some using WPA-PSK and others WPA2PSK. The same encryption method must be set on the clients.
●
Highest (WPA-Auto)
Setting with which an access point can process both the WPA and WPA2 type
of authentication. This is necessary when the access point communicates with
different clients, some using WPA and others WPA2. The same encryption
method must be set on the clients.
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Encryption
Encryption protects the transferred data from eavesdropping and corruption. You
can only disable encryption in the Encryption check box if you have selected Open
System for authentication in the Basic WLAN menu. All other security methods
include both authentication and encryption. Various schemes are used for
encryption:
●
WEP (Wired Equivalent Privacy)
A weak, symmetrical stream encryption method with only 40- or 104-bit long
keys based on the RC4 algorithm (Ron’s Code 4).
●
TKIP (Temporal Key Integrity Protocol)
A symmetrical stream encryption method with the RC4 algorithm (Ron’s Code
4). In contrast to the weak WEP encryption, TKIP uses changing keys derived
from a main key. TKIP can also recognize corrupted packets.
●
AES (Advanced Encryption Standard)
Strong symmetrical block encryption method based on the Rijndael algorithm
that further improves the functions of TKIP.
Encryption key source
The encryption key source indicates whether the key is configured locally and fixed
(local) or whether it is negotiated by a higher protocol and an authentication server
(server).
Security Level for WLAN list box
Select a security level that is supported by all clients. The content of the next page
depends on the selected security level. If you select the security level None, there
is no following page since neither encryption nor authentication will be used.
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5.5.6
Settings for the Security Level Low
Default Key list box
Select the WEP key or AES key you want to define.
Key text box
Enter the character string for the key here. The key can be entered as ASCII
characters or alternatively as hexadecimal digits (0 – F). If the key was entered in
ASCII format, this is later displayed in quotes.
Length list box
Select the key length you want to use here. If the length of the string in the Key text
box is longer or shorter than the selected key length, an error message is
displayed. The following key lengths are possible:
●
40 bits WEP (5 ASCII characters or 10 hexadecimal numbers)
●
104 bits WEP (13 ASCII characters or 26 hexadecimal numbers)
●
128 bits AES (16 ASCII characters or 32 hexadecimal numbers)
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With the Auto setting, the maximum key length is also 128 bits.
5.5.7
Settings for the Security Level Medium in Access Point Mode
Authorization Lifetime text box
Enter the period of validity of the authentication in seconds. The minimum time is 1
minute (enter 60), the maximum time is 12 hours (enter 43200). The default is 1
hour (3,600 seconds).
RADIUS Server Table
You can enter the data for two RADIUS servers; the information in the Backup
column is used if the server defined in the Primary column is not available.
In addition to the IP address and the port, you must also specify a password
(maximum 128 characters) and confirm it in a second box. In the Maximum
Retransmissions text box, you enter the maximum number of transmission
attempts. The maximum possible value is 5, the default is 2.
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5.5.8
Settings for Security Level Medium in Client Mode
Dot1x user name text box
Here, enter the user name with which you want to register over the RADIUS server.
Dot1x user password text box
Here, enter the password for the above user name. The client logs on with the
RADIUS server using this combination when a logon with a certificate was not
possible.
Password confirmation text box
Confirm the password here.
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5.5.9
Settings for the Security Level High
Pass phrase text box
Here, you enter a WPA2 key. The key can be 8 to 63 ASCII characters or exactly
64 hexadecimal characters long. This initialization key must be known on both the
client and the SCALANCE W78x and is entered by the user at both ends.
Pass phrase confirmation text box
Here, you confirm the entered WPA2 key.
Note
The key can be 8 to 63 ASCII characters or exactly 64 hexadecimal characters
long. It should be selected so that is complex for example consisting of random
numbers, letters (upper-/lowercase), have few repetitions and special characters).
Do not use known names, words or terms that could be guessed. If a device is lost
or if the key becomes known, the key should be changed on all devices to maintain
security.
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5.5.10 Settings for the Security Level Highest
The options you can set correspond to those of the Medium security level.
5.5.11 The Following Settings Were Made
Overview of the Selected Settings
This page contains an overview of the selected security settings. If you want to
change a setting, you can click on the Back button to return to a previous page
where you can enter a different value or make a different selection. In client mode,
this page contains less information.
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5.5.12 Finish
Exiting the Wizard
The last page of the wizard indicates other security measures that you can take. If
you still want to make final modifications, you can open the relevant pages by
clicking on the texts highlighted in blue:
●
IP Filter
opens the Security > Access page.
●
Access Control List for WLAN 1 (WLAN 2)
opens the Security > ACL page for wireless adapter 1 or 2.
This link is available only in access point mode.
●
To apply changes perform restart
opens the System > Restart page.
Finish button
Click the Finish button to exit the Wizard. Your settings only take effect after you
have restarted (System > Restart menu).
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5.6
iPCF Wizard
Note
The iPCF Wizard is available only in client mode of the SCALANCE W788-1RR or
SCALANCE W788-2RR.
Note
The iPCF wizard also includes pages for specifying security settings. If you use
iPCF, you do not therefore need to work through the Security Wizard.
5.6.1
i Point Coordination Function Settings
Channel Selection and Transmit Power
On this page, you make the setting is necessary for iPCF. The main advantage of
suitable settings is that you can improve roaming times and reduce the interference
affecting other systems or segments.
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Note
When using iPCF, the following maximum data rates must be taken into account
when setting the access point:
Wireless standard Max. data rate
IEEE 802.11a/h 12 Mbps
IEEE 802.11b
11 Mbps
IEEE 802.11g
12 Mbps
Background scan ch. select check box
Select this check box to restrict the number of channels on which the client
searches for an access point. This results in a reduction of handover times.
Restricting the channels on which a client searches for an access point is a major
factor in the reduction of handover times. To use this function, activate the
Background scan ch. select list box and enter the channels on which access points
operating in iPCF mode can actually be reached in the Background scan channels
box.
Background scan channels text box
Here, enter the channels on which access points operating in iPCF mode can be
reached by the client. If you enter more than one channel, each channel must be
separated by a blank.
Transmit power list box
When using antennas, it may be necessary to reduce the transmit power to avoid
exceeding the legal maximum transmit power or to restrict the visibility of the radio
link. If necessary, select the required reduction in transmit power here.
A reduction of transmit power may also necessary to avoid interfering with other
cells because a reduced transmit power means a reduction in the span of the cell.
Antenna Mode list box
This list box specifies the use of the antennas.
If Diversity is set, the SCALANCE W78x uses the only antenna that allows the best
possible data transmission. For each WLAN interface, both antennas must be
connected. Both antennas should also be of the same type and they should also
illuminate approximately the same space. If an access point is operated with the
diversity setting and the two antennas span different cells, this can have negative
effects.
Otherwise, you must select the connected antenna. For the IWLAN-PB LINK,
select Antenna A (see 6.3.3 section Antennas).
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Note
If only one antenna is connected, the connected antenna must be set permanently.
The second antenna socket must also have a 50 Ω terminator fitted.
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5.6.2
Security Settings for WLAN
Security Settings with iPCF
On this page, you specify the security level for the client. iPCF is a proprietary
standard optimized for fast roaming and deterministic data transfer. With the
current security mechanisms 802.1x and WPA, keys are negotiated using relatively
time-consuming mechanisms, and they are therefore not available with iPCF.
Security level list box
Select the security level you require for your wireless network in this box. The
following are possible:
●
None (no encryption)
An open system without encryption.
●
Med (encryption)
Static keys are used. This is the recommended setting and you should use a
128-bit AES key.
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5.6.3
Public Security Key for WLAN
Specifying the Key
If you have selected the security level Med, you must specify the key on this page.
Default Key list box
Select the WEP key or AES key you want to define.
Key text box
Enter the character string for the key here. The key can be entered as ASCII
characters or alternatively as hexadecimal digits (0 – F). If the key was entered in
ASCII format, this is later displayed in quotes.
Length list box
Select the key length you want to use here. If the length of the string in the Key text
box is longer than the selected key length, an error message is displayed. The
following key lengths are possible:
●
40 bits (5 ASCII characters or 10 hexadecimal numbers)
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●
104 bits (13 ASCII characters or 26 hexadecimal numbers)
●
128 bits (16 ASCII characters or 32 hexadecimal numbers)
With the Auto setting, the maximum key length is also 128 bits.
5.6.4
Finish
Exiting the Wizard
The last page of the iPCF Wizard shows you all the settings you have made so that
you can make a final check.
Finish button
Click the Finish button to exit the iPCF Wizard. Your settings only take effect after
you have restarted (System > Restart menu).
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Configuration Using Web Based
Management and the Command Line
Interface
6
6.1
General Information on Web Based Management and the
Command Line Interface
6.1.1
Introduction
Contents of This Chapter
This chapter explains the possible settings for the SCALANCE W78x.
Web Based Management provides you with configuration options way beyond
those described in the previous chapter. You will also find a detailed description of
the individual elements of a page in the online help.
As an alternative, you can also configure the device using the Command Line
Interface (CLI). This allows remote configuration over Telnet.
This chapter describes both configuration methods together because the menu
structure of Web Based Management is the same as the structure of the CLI
commands.
Note
You should only use the command line interface if you are an experienced user.
Even commands that bring about fundamental changes to the configuration are
normally executed without a prompt for confirmation.
Note on Login User
If you log on as user, you will only have restricted use of WEB and Telnet. Since
you only have read access, some commands do not exist in Telnet and some
areas cannot be selected.
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Required Experience
To be able to use the information in this chapter effectively, you should have a
thorough knowledge of network technology and WLANs.
6.1.2
The LED Simulation of Web Based Management
Display of the Operating State
The SCALANCE W78x has one or more LEDs that provide information on the
operating state of the device (see Chapter 2). Depending on its location, direct
access to the SCALANCE W78x may not always be possible. Web Based
Management therefore displays simulated LEDs.
Activating the Simulation
There is an HTML-based simulation of the LED status. Click on the green icon
below the Console link to activate the simulation:
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6.1.3
Working with Web Based Management
Navigation Bar
You will find the following links in the upper menu bar of Web Based Management
(WBM):
●
Console
This link opens a console window in which you can enter CLI commands.
●
Support
When you click this link, you open a SIEMENS AG support page in the
Internet.
●
Logout
Close the current Web Based Management session by clicking on this link. The
logon dialog is then displayed again.
●
Help
Clicking on this link opens the online help of Web Based Management in a
separate browser window.
Updating the Display with Refresh
Web Based Management pages that display current parameters have a Refresh
button at the lower edge of the page. Click this button to request up-to-date
information from the SCALANCE W78x.
Saving Entries with Set Values
Pages in which you can make configuration settings have a Set Value button at the
lower edge. Click this button to save the configuration data you have entered on
the SCALANCE W78x.
Creating Entries with NEW
Pages in which you can create lists have the New button at the lower edge. Click
this button to create a new entry in the list.
Resetting a Counter with Reset Statistics
With this button, you can reset the relevant counters.
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6.1.4
Command Line Interface (CLI)
Starting the CLI in a Windows Console
Follow the steps outlined below to start the Command Line Interface in a Windows
console:
1.
Open a Windows console and type in the command telnet followed by the IP
address of the SCALANCE W78x:
C:\>telnet <IP address>
2.
Enter your login and password.
As an alternative, you can also enter the command telnet followed by the IP
address of the SCALANCE W78x in the Start > Execute menu.
Starting the CLI in Web Based Management
Click on the Console entry in the upper menu bar of Web Based Management. A
console opens in which you can log on with your login and password. The IP
address is adopted by Web Based Management.
Shortcuts for Commands
As an alternative, instead of entering full CLI commands, you can simply enter the
first letter or the first few letters of the command and then press the Tab key. The
Command Line Interface then displays a command starting with the letter or letters
you typed in. If the command displayed is not the command you require, press the
Tab key again to display the next command.
Directory Structure
Before you can enter a command in the Command Line Interface, you must first
open the required menu or submenu. This section lists the commands of each
menu in a separate table. The menu itself is shown above the table on a gray
background. The table lists only the commands themselves.
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Symbols for Representing CLI Commands
CLI commands generally have one or more parameters that are represented in the
syntax description as follows:
●
Mandatory parameters are shown in pointed brackets.
Example:
<IP address>
●
Optional parameters are shown in square brackets.
Example:
[E|D]
If you omit an optional parameter, the commands output the currently set
value.
●
Alternative input values are separated by the pipe character. In this case, you
specify one of the listed values as the parameter.
Example:
[E|D]
You must enter either E or D.
●
If a numeric value is required as a mandatory parameter, you can also specify
a range of values:
Example:
<0 ... 255>
You must enter a value between 0 and 255.
Cross-menu Commands
You can use the commands in the following table in any menu.
CLI\ ... >
Command
Description
Comment
/
Moves you one menu level higher.
?
Displays the commands and submenus
available in the menu.
exit
Exits the CLI/Telnet or SSH session.
Cannot be called
using the command
shortcuts.
restart
Restarts the SCALANCE W78x
Cannot be called
using the command
shortcuts.
info
Displays information on the current
menu item.
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6.2
The System Menu
6.2.1
System Information Menu Command
Mode and Locale Setting
On this page, you make several basic settings for the SCALANCE W78x, for
example, the country and mode (access point or client).
For the SCALANCE W788-2RR, you can also set the Hipath Access Point mode.
When the mode changes from access point mode to client mode and back, all the
parameters are cleared except:
●
IP address
●
Subnet mask
●
Gateway address
●
SSID (only in access point mode)
●
IP address of the default router
●
DHCP flag
●
System name
●
System location
●
System contact
●
Device mode
●
Country code
●
User and Admin IDs
Changing to the HiPath Access Point mode is described in section below.
The Current system time output box informs you about the system time. The
System up time output box informs you about the time that has elapsed since the
last restart.
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Reading out the Country List
Enter
https:// in the address field of the Internet browser enter the IP address of the
SCALANCE W7xx and /countrylist.log
and confirm with Enter.
After logging in, you then obtain the Country List with the following headers:
---------------------------------------------------------------------------------------------------COUNTRY
| MODE
| CH | MHz | PWR(EIRP) | USAGE
---------------------------------------------------------------------------------------------------The table lists the permitted wireless modes and channels along with the
corresponding channel frequencies for every possible country setting. The
PWR(EIRP) rubric contains the permitted limit values for the transmit power,
measured at the antenna. These values include the transmit power of the access
point and the antenna gain of the antenna being used.
Note
In the version for USA/Canada, you cannot select a country. The frequency bands
for these countries are already preset.
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The HiPath Access Point Mode
Note
The HiPath Access Point mode is available only with the SCALANCE W788-2RR
model, firmware version 2.4 or higher.
The HiPath Access Point mode is intended for the following situation:
• The SCALANCE W788-2RR is an access point in a Siemens WLAN HiPath
communications system.
• After changing to the HiPath Access Point mode, the SCALANCE W788-2RR
is no longer configured with the WBM or the Command Line Interface but by
the HiPath Wireless Controller of the communications system.
Notice
After changing to the HiPath Access Point mode, the access point is returned to its
default status; in other words, the configuration is lost.
If your access point was already configured and you want to use the configuration
later, save it before you change over as described in Section 6.2.11, Load & Save.
Follow the steps outlined below to change the SCALANCE W788-2RR to the
HiPath Access Point mode:
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1. Connect the access point with the HiPath Wireless Controller and with the
configuration computer over the Ethernet interface.
2. If the access point is brand new, assign an IP address.
If a DHCP server is visible, the access point is assigned an IP address
automatically. Otherwise, assign the access point an IP address using the
Primary Setup Tool (PST) (see Section 4, Configuring the IP Address with the
Primary Setup Tool).
3. Connect your configuration computer with the access point in the Web browser
and open Web Based Management (WBM) to the System Information page
with W788-2RR > System (see Sections 5.1 and Fehler! Verweisquelle
konnte nicht gefunden werden.).
4. In the Device Mode list, select HiPath Access Point and confirm this with Set
Values. During configuration make sure that the SCALANCE W78x is assigned
an IP address suitable for the HiPath Wireless Controller.
5. A blue message "Restart to apply changes" appears above the System
Information WBM page.
Click on the blue message. The Restart window opens.
Confirm the restart by clicking on the Restart button.
The access point runs a restart.
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Configuration Using Web Based Management and the Command Line Interface
6. During the restart, the access point connects to the HiPath Wireless Controller.
7. The access point loads the current HiPath firmware for the W788 from the
HiPath Wireless Controller and runs a restart.
The HiPath firmware is retained in the RAM of the AP when there is a restart
due to reconfiguring with the HiPath Wireless Controller.
The HiPath firmware for the SCALANCE W788 has the following name
W788-<Version>.img,
where <Version> stands for the current version number.
Note
After starting up with the HiPath firmware, the access point can no longer be found
with the PST.
Note
Operating SCALANCE W client modules (W74x or W788 in client mode) on a
HiPath access point or SCALANCE W access point in HiPath Access Point mode
involves the following restrictions:
• The IP configuration of the WLAN client module (WBM page System > IP
Settings) must not be set on to DHCP server. It may be necessary to reserve
a range of IP addresses for the fixed IP settings of the WLAN client modules.
• The MAC Mode parameter on the WBM page Interfaces > WLAN must not be
set to Adopt own MAC (see Section 6.3.2, WLAN).
• The WBM and Telnet of the WLAN client module can only be reached over
Ethernet.
After loading the HiPath firmware, the R1 and R2 LEDs indicate the enabled
antenna ports:
●
R1 lit
The upper antenna connectors A1 and B1 are enabled (transmission standard
IEEE 802.11a).
●
R2 lit
The lower antenna connectors A2 and B2 are enabled (transmission standard
IEEE 802.11b/g).
Note
In HiPath Access Point mode, the LEDs of the SCALANCE W788 have a different
significance compared with that in the Access Point or Client mode.
Operating Instructions SCALANCE W78x
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Configuration Using Web Based Management and the Command Line Interface
Note
In HiPath Access Point mode, the following restrictions apply
•
•
•
•
No use of the C-PLUG possible
No WDS and no redundancy possible.
No iPCF possible.
Heavy data traffic in the cell (for example, resulting from voice) can impair the
quality of the individual wireless connections (for example, S7 communication).
This means that a response time cannot be defined.
The following table shows the significance of the LEDs of the HiPath access point
AP2600 and the SCALANCE W788-2RR in the HiPath Access Point mode:
HiPath AP2600
SCALANCE W788-2RR in
HiPath Access Point mode
LED
(meaning)
Color
---
P1
(Ethernet port)
Yellow/green
---
L2
(power supply Ethernet)
Green
LED
Color
5 GHz
Green
R1
Green
2.4 GHz
Green
R2
Green
Middle
Yellow
R1 + R2
Yellow
L1
(power supply M12)
Green
F
(fault)
Red
--Middle
Red
For the arrangement of the LEDs on the device, refer to Figure 2-1 "The LEDs of
the SCALANCE W78x".
For information on the other steps in configuration, refer to the manual HiPath
Wireless Controller, Access Points and Convergence Software - User Guide.
Exiting the HiPath Mode
If you want to return the Scalance W access point to the standard modes "Access
Point" or "Client Mode", the HiPath firmware must be deleted in RAM. To do this,
turn of the power to the Scalance W AP for at least 30 seconds. Following this, the
AP starts up again with the SCALANCE W firmware and it is now possible to
change the mode over the Web interface.
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109
Configuration Using Web Based Management and the Command Line Interface
Note
Please note that if you install the SCALANCE W788 outdoors, some of the
channels used indoors may not be used.
The approval of indoor and outdoor channels is country-specific. If the SCALANCE
W is operated outdoors, make sure that the device is not exposed to rain (installed
under a roof) and is not exposed to direct sunlight (installed with UV protection).
You will find more detailed information on HiPath Wireless, at
http://www.siemens.com/hipath
Syntax of the Command Line Interface
CLI\SYSTEM>
Command
apmode [E|D|H]
Description
Comment
This specifies the mode for the
SCALANCE W78x:
E
Access Point
D
Client
H
HiPath Access Point
(only available for SCALANCE
W788-2RR)
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Configuration Using Web Based Management and the Command Line Interface
Command
country
[AR|AT|AU|BE|BR|BG|CA|
CH|CL|CN|CZ|DE|DK|ES|
FI|FR|GB|GR|HK|HU|IE|
IN|IS|IT|JP|J3|KR|KW|
LI|LU|NL|NO|PO|PT|RU|
SE|SG|TR|US|ZA]
Description
Specifies properties for specific countries.
The country codes comply with ISO 3166,
however the SCALANCE W78x supports
only the codes listed in the left-hand
column.
AR
Argentina
AT
Austria
AU
Australia
BE
Belgium
BR
Brazil
BG
Bulgaria
CA
Canada
CH
Switzerland
CL
Chile
CN
China
CZ
Czech Republic
DE
Germany
DK
Denmark
ES
Spain
FI
Finland
FR
France
GB
Great Britain
GR
Greece
HK
Hong Kong
HU
Hungary
IE
Ireland
IN
India
IS
Iceland
IT
Italy
JP
Japan
J3
Japan Old
KR
Korea
KW
Kuwait
LI
Liechtenstein
LU
Luxembourg
NL
Netherlands
NO
Norway
PO
Poland
PT
Portugal
RU
Russia
SE
Sweden
SG
Singapore
TR
Turkey
US
United States of America
ZA
South Africa
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
Comment
This command is not
available in the version
for USA / Canada.
111
Configuration Using Web Based Management and the Command Line Interface
Command
Description
Comment
name [system name]
Assigns a value to the sysName MIB
variable.
Maximum of 255
characters. If you want
to use the name in WDS
or redundancy, the
maximum length is 32
characters.
location [location]
Assigns a value to the sysLocation MIB
variable.
Maximum of 255
characters.
contact [name]
Assigns a value to the sysContact MIB
variable.
Maximum of 255
characters.
ping [[-c N] | [-s]] <IP>
For connection test to partner.
-c (counter) for the number (N) of ICMPs
and -s (stop) to stop ICMP frames.
Telnet only
password [admin|user]
[password]
Specifies a password for access to the
SCALANCE W78x.
Maximum of 31
characters.
6.2.2
IP Settings Menu Command
Configuration
Here, you decide whether you will use a DHCP server or whether you want to
assign a fixed IP address to the SCALANCE W78x. You can also set the IP
address of a router and the default TTL. The TTL (time to live) parameter specifies
the maximum number of routers passed through by a data packet before it is
discarded.
Note
If you use a Radius server for authentication, this must the accessible over the
management VLAN.
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Configuration Using Web Based Management and the Command Line Interface
Syntax of the Command Line Interface
CLI\SYSTEM\IP>
Command
Description
dhcp [E|D]
Enable / disable DHCP server.
dhcptype [M|N|C]
Specifies how a device will be
identified:
M MAC address
N Device name
C Client ID
clientid
Specifies a client-ID for the device.
ip [IP address]
Specifies the IP address for the
SCALANCE W78x.
subnet [subnet mask]
Specifies the subnet mask.
gateway [IP address]
Specifies the IP address of the
router.
ttl [TTL value]
Sets the TTL (Time To Live)
parameter.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
Comment
When you enter a valid IP
address, enabled DHCP
is automatically disabled.
Default value: 64
113
Configuration Using Web Based Management and the Command Line Interface
6.2.3
Services Menu Command
Configuration
Here, you select the services with which access to the SCALANCE W78x will be
possible. If, for example, the SNMP Enabled check box is not selected, neither
write nor read access is possible using the SNMP protocol (v1,v2c,v3). If the
SNMP protocol is not permitted, it is not possible to send SNMP traps.
To improve security, you should only enable the services that you actually use.
Notice
Over SNMP, it is possible to disable all services and to allow read access only over
SNMP. Following this, no further configuration of the SCALANCE W78x is possible.
If you only want to enable secure access over HTTPS when configuring the device,
select the HTTPS only check box.
If you want to enable the response of the device to Ping signals, select the Ping
enabled check box.
With the integrated SSH server, you have secure access to the CLI. In contrast to
Telnet, the entire communication including user authentication is encrypted.
Notes on WEB Enabled in the WEB Interface
The check box for the WEB Enabled entry is selected and inactive because
configuration with Web Based Management is no longer possible without the
option of access with HTTP.
If you want to deactivate the option of configuration with Web Based Management,
you can do this in the Security Wizard over Telnet and SNMP. Settings made using
the Security Wizard only take effect after a restart on the SCALANCE W78x.
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Configuration Using Web Based Management and the Command Line Interface
Syntax of the Command Line Interface
CLI\SYSTEM\SERVICES>
Command
Description
telnet [E|D]
Enable / disable configuration of the
SCALANCE W78x over Telnet.
ttimeout [E|D]
Enables / disables the time
restriction for a Telnet session.
ttimeout [time in s]
Specifies the time after which a
Telnet section is closed if there is no
further input.
snmp [E|D]
Enable / disable SNMP.
mail [E|D]
Enable / disable E-mail.
web [E|D]
Enable / disable configuration of the
SCALANCE W78x over Web Based
Management.
https [E|D]
Enable / disable access for
configuring only over HTTPS.
ping [E|D]
Enable / disable response of the
device to Ping.
psu [E|D]
Enable / disable access to the
SCALANCE W78x with the Primary
Setup Tool. If this access option is
deactivated, configuration data can
only be read with the Primary Setup
Tool.
ssh [E|D]
Enable / disable CLI access over
SSH.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
Comment
Only WEB and SNMP
115
Configuration Using Web Based Management and the Command Line Interface
6.2.4
Restart Menu Command
Restart button
Click this button to restart the SCALANCE W78x. During a restart, the
SCALANCE W78x is reinitialized, the internal firmware is reloaded, and the
SCALANCE W78x runs a self-test. The entries that have been learned in the
address table of the SCALANCE W78x are deleted. You can leave the browser
window open while the SCALANCE W78x restarts.
Restore Memory Defaults button
Click this button to reset the configuration. The following parameters (protected
defaults) are not reset:
●
IP address
●
Subnet mask
●
Gateway address
●
SSID
●
IP address of the default router
●
DHCP flag
●
System name
●
System location
●
System contact
●
Device mode
●
Country code
There is no automatic restart. This allows you to enter data using Web Based
Management before the restart. The changes take effect only after a restart.
If you are logged on as user, the Restore Memory Defaults button is not visible.
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116
Configuration Using Web Based Management and the Command Line Interface
Restore Factory Defaults and Restart button
Click on this button to restore the factory configuration settings. The protected
defaults (see above) are also reset. The C-PLUG is reinitialized and formatted if it
exists. An automatic restart is triggered.
Note
By resetting all the defaults, the IP address is also lost. The SCALANCE W78x can
then only be accessed using the Primary Setup Tool unless the IP address is
obtained over DHCP.
If you are logged on as user, the Restore Factory Defaults button is not visible.
Syntax of the Command Line Interface
CLI\SYSTEM\RESTARTS>
Command
Description
restart
Restarts the SCALANCE W78x.
memreset
Resets the factory settings and
triggers a restart (the protected
settings are not deleted).
defaults
Resets the factory settings (the
protected settings are also deleted).
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
Comment
The restart command can
be called from all menus,
however not using the
shortcut commands.
117
Configuration Using Web Based Management and the Command Line Interface
6.2.5
Event Config Menu Command
System Events of the SCALANCE W78x
On this page, you specify how the SCALANCE W78x reacts to system events. You
can configure the reaction of the SCALANCE W78x to the following events:
●
Startup of the SCALANCE W78x
●
Change in the Ethernet status Link up / Link down.
●
Error in authentication.
●
Changing the power supply of the SCALANCE W78x. Evaluation of this event
is only useful when using a redundant power supply.
●
Change in the error status
If you use the SCALANCE W78x as an Access Point, you can configure additional
system events:
●
IP-Alive state change (application-specific connection monitoring)
●
Link Check state change (device-specific connection monitoring)
●
Events related to bandwidth reservation iQoS
●
Authentication of the client
●
Detection of access points on own or an overlapping wireless channel.
●
Topology changes in Rapid Spanning Tree.
●
For the SCALANCE W788-1RR and SCALANCE W788-2RR models, events in
conjunction with iPCF.
●
Events in conjunction with the Forced Roaming on IP down function .
●
Change in the WDS connection status Link up / Link down.
With the SCALANCE W788-2PRO and SCALANCE W788-2RR models, there is
also the status of a redundant connection (redundant, not redundant, interrupted)
as a system event.
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Configuration Using Web Based Management and the Command Line Interface
Reaction to System Events
The following alternatives are possible:
●
The SCALANCE W78x sends an E-mail.
●
The SCALANCE W78x triggers an SNMP trap.
●
The SCALANCE W78x writes an entry in the log file.
●
The SCALANCE W78x indicates an error (the error LED lights up).
By selecting the appropriate check boxes, you specify which events trigger which
reactions on the SCALANCE W78x. With the check box in the Functions enabled
row, you enable or disable the sending of E-mails or triggering of SNMP traps.
Syntax of the Command Line Interface
For each of the four possible reactions E-mail, trap, log and fault, either E
(Enabled, setting is enabled) or D (Disabled, setting is disabled) must be entered
as the parameter. If, for example, an E-mail is sent when the SCALANCE W78x
restarts (first parameter "CW") and an entry is made in the log table but neither a
trap nor an error is generated, the following command must be entered:
setec CW E D E D
CLI\SYSTEM\EVENT>
Command
Description
setec CW <E|D> <E|D>
<E|D> <E|D>
Reactions when the
SCALANCE W78x restarts.
setec LU <E|D> <E|D>
<E|D> <E|D>
Reaction to the Link Down event on
the Ethernet interface.
setec LD <E|D> <E|D>
<E|D> <E|D>
Reaction to the Link Up event on the
Ethernet interface.
setec AF <E|D> <E|D>
<E|D> <E|D>
Reaction to a bad authentication
over Web Based Management, CLI,
or SNMP.
setec PM <E|D> <E|D>
<E|D> <E|D>
Reaction to a change of power
supply over the M12 power
connection.
setec PE <E|D> <E|D>
<E|D> <E|D>
Reaction to a change of power
supply over Ethernet.
setec FC <E|D> <E|D>
<E|D> <E|D>
Reaction to a change in the error
status.
setec AP <E|D> <E|D>
<E|D> <E|D>
Reaction to detection of an access
point on own or an overlapping
wireless channel.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
Comment
If the error status was
triggered only due to a
link down event, the error
states is cleared and the
error LED goes off.
The SNMP trap AuthFault
is sent only if there is a
bad SNMP authentication.
This command is not
available in the client
mode.
119
Configuration Using Web Based Management and the Command Line Interface
Command
Description
Comment
setec MS <E|D> <E|D>
<E|D> <E|D>
Reaction when the update time in
iPCF mode with PNIO support
cannot be kept to due to an
additional client.
This command is
available only on the
SCALANCE W788-1RR
and SCALANCE W7882RR models but not in
client mode.
setec CT <E|D> <E|D>
<E|D> <E|D>
Reaction when the specified update
time in iPCF mode with PNIO
support cannot be kept to.
This command is
available only on the
SCALANCE W788-1RR
and SCALANCE W7882RR models but not in
client mode.
setec IS <E|D> <E|D>
<E|D> <E|D>
Reaction to a change in the
connection status on a client for
which the IP-alive monitoring is
activated.
If the connection status
changes, an event is
triggered. If the
connection no longer
exists, the error state is
triggered and the error
LED is lit.
This command is not
available in the client
mode.
setec LI <E|D> <E|D>
<E|D> <E|D>
Reaction when establishing a
connection monitored with the Link
Check function.
This command is not
available in the client
mode.
setec IQ <E|D> <E|D>
<E|D> <E|D>
Reaction to a change in the iQoS
status.
This command is not
available in the client
mode.
setec CA <E|D> <E|D>
<E|D>
Reaction to a change in the client
authentication status.
This command is not
available in the client
mode.
setec RD <E|D> <E|D>
<E|D> <E|D>
Reaction to a change in the
redundancy event status.
This command is not
available in the client
mode.
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Configuration Using Web Based Management and the Command Line Interface
6.2.6
E-mail Config Menu Command
Sender and Recipient of an E-mail
Here, you specify who the SCALANCE W78x sends an E-mail to as a reaction to
configured events. You can also enter a sender. This allows you to recognize
which device is involved and sent the E-mail. If you do not make an entry in the
From box, the SCALANCE W78x uses the following sender: [email protected]<IP
address>
Syntax of the Command Line Interface
CLI\SYSTEM\EMAIL>
Command
Description
mail [E|D]
Enable/disable the E-mail service
email [E-mail address]
Specifies the address(es) to which
the SCALANCE W78x sense Emails.
smtp <IP address>
[:port number]
Specifies the IP address and the
port number of the SMTP server.
from [text for sender field]
Specifies the sender of E-mails from
SCALANCE W78x.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
Comment
Several E-mail addresses
can be entered separated
by semicolons.
121
Configuration Using Web Based Management and the Command Line Interface
6.2.7
SNMP Config Menu Command
Configuration
Select the check boxes of the entries according to the SNMP functionality you want
to use. SNMP version 3 allows permissions to be assigned and protocol level,
authentication, and encryption. You specify groups and users in the Groups and
Users submenus. You can also make entries there if the
SNMPv3 enabled check box is not selected, however the entries are not applied.
Notice
When using SNMP version 3, you should disable SNMP V1 and V2c because the
security settings of SNMP V3 can be bypassed by access over SNMP V1 or V2c.
Trap Submenu
Here, you enter the IP addresses of up to 10 trap receivers. The SCALANCE W78x
sends a trap to all the addresses you enter if their Enable trap check boxes are
selected.
Note
During a warm or cold restart with a wireless connection ( AP client, WDS, or
WRED), there is no guarantee that the recipient can be reached at the time when
the trap is sent. This leads to a loss of the message.
Groups Submenu
This page displays the SNMPv3 groups. You can create a new group by clicking
the New button and specifying the group name, the security level, and the write or
read permissions.
You can delete a group by selecting the check box in the Del column and clicking
the Set Values button. If members are already entered in the group, you cannot
delete the group nor is it possible to change the security level of the group.
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122
Configuration Using Web Based Management and the Command Line Interface
There are three SNMPv3 security levels:
Security Level
Special Features
Comment
None
No authentication, no
encryption.
Auth/No Priv
Authentication with the MD5
or SHA algorithm, no
encryption.
To display the members of
the group, you must enter
the authentication password
(maximum of 63 characters).
Auth/Priv
Authentication with the MD5
or SHA algorithm,
encryption with the DES3
algorithm.
To display the members of
the group, you must enter
the authentication password
(maximum of 63 characters).
Users Submenu
This page displays the SNMPv3 users. You can create a new user by clicking the
New button and specifying the user name and the group to which the user will
belong. If necessary, you must also enter the passwords for the authentication and
for the encryption.
You can delete a user by selecting the check box in the Del column and clicking
the Set Values button.
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123
Configuration Using Web Based Management and the Command Line Interface
Syntax of the Command Line Interface
CLI\SYSTEM\SNMP>
Command
Description
Comment
snmp [E|D]
Enables / disables SNMP.
Enables / disables
SNMPv1, v2c, v3 and
Traps.
snmpv1 [E|D]
Enables / disables SNMPv1/v2c.
Enables / disables
SNMPv1, v2c and traps.
snmpv3 [E|D]
Enables / disables SNMPv3.
The special features of
SNMPv3 undertake effect
after you disable
SNMPv1. Enabling
SNMPv3 does not
automatically disable
SNMPv1.
snmpro [E|D]
Enables / disables SNMPv1/v2c
read only.
getcomm
[Read community string]
Specifies the Read community
string, maximum length 63
characters.
The default is public.
setcomm
[Write community string]
Specifies the Write community
string, maximum length 63
characters.
The default is private.
traps [E|D]
Enables / disables SNMPv1 traps.
Traps are then enabled, if
SNMP v1, v2c is also
enabled.
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Configuration Using Web Based Management and the Command Line Interface
CLI\SYSTEM\SNMP\GROUP>
Command
Description
Comment
add <Name>
[NOAUTH|AUTH|PRIV]
[R|W]
Adds an SNMPv3 group. NOAUTH – Write access without read
access is not possible.
No authentication, no encryption;
AUTH - Authentication with MD5 or
SHA algorithm, no encryption.
PRIV - Authentication with MD5 or
SHA algorithm and encryption with
the DES3 algorithm.
R – Read access;
W - Write access
edit <Index>
[NOAUTH|AUTH|PRIV]
[RE|RD|WE|WD]
Changes the security level of the
group and sets the access rights.
You can view of the index of the
group with the "info“ command.
RE – allows read access;
RD – denies read access;
WE – allows write access;
WD – denies write access;
You cannot edit the
authentication and
encryption settings unless
the group is empty.
Preventing read access
also prevents write
access.
Permitting write access
also permits read access.
delete <Index>
Deletes the SNMPv3 group from the
group list at the index position.
Is only possible to delete
a group if it is empty.
clearall
Clears all SNMP groups that are
empty.
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125
Configuration Using Web Based Management and the Command Line Interface
CLI\SYSTEM\SNMP\USER>
Command
Description
Comment
add <user name> <group name>
[NONE|MD5|SHA]
[authentication ID]
[Encryption ID]
Assigns an SNMPv3 user to a
group.
If authentication is necessary for the
group, the algorithm must be
specified as a parameter (MD5 or
SHA).
If encryption is necessary for the
group, the encryption password
must be specified as a parameter.
The authentication
password and the
encryption password can
be a maximum of 63
characters long.
edit <index>
<group name>
[NONE|MD5|SHA]
[authentication ID]
[Encryption ID]
Changes the group assignment, the
authentication algorithm, and the
encryption password of the SNMPv3
user.
delete <Index>
Deletes an SNMPv3 user from the
list at the point identified by the
index.
clearall
Deletes all SNMPv3 users.
CLI\SYSTEM\SNMP\TRAP>
Command
Description
traps [E|D]
Enables / disables SNMP traps.
settrap <entry>
<IP address>
<E|D>
Specifies the IP address of the trap
recipient entry (entry between 1 and
10) and enables / disables the
sending of traps to this recipient.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
Comment
Traps are then enabled, if
SNMP v1, v2c is also
enabled.
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Configuration Using Web Based Management and the Command Line Interface
6.2.8
Syslog Menu Command
Syslog according to RFC 3164 is used for transferring short, unencrypted text
messages in the IP network. This requires a standard Syslog server.
Syslog Configuration with the SCALANCE W
The parameters used for the Syslog protocol are displayed and set in the System > Syslog menu:
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The meaning of the parameters is as follows:
Syslog Server text box:
The server address decides the IP address to which the Syslog messages are
sent. If no IP address is entered in this box, no Syslog messages are sent. If the
Syslog server is not in the same network as the SCALANCE W, an automatic
attempt is made to establish a connection over the default gateway.
log table check box:
This check box decides whether all entries made in the log table are also sent as
Syslog messages.
auth log check box:
This check box decides whether all entries made in the authentication log are also
sent as Syslog messages.
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Syntax of the Command Line Interface
CLI\SYSTEM\SYSLOG>
Command
Description
Comment
info
Displays the current Syslog
configuration.
server [IP address]
Specifies the IP address of the
Syslog server.
Can only be changed with
Admin rights.
logs
Specifies whether the log entries are
also sent to the Syslog server.
Can only be changed with
Admin rights.
Specifies whether the authentication
log entries are also sent to the
Syslog server.
Can only be changed with
Admin rights.
auths
[D|E]
[D|E]
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6.2.9
SNTP Config Menu Command
Time-of-Day for Synchronization in the Network
SNTP is the acronym for Simple Network Time Protocol. An SNTP server uses this
protocol to provide a uniform time throughout the entire network. Clients can
synchronize themselves with this time.
If you enter the IP address of an SNTP server here and select the time zone of the
SCALANCE W78x, the SCALANCE W78x uses the time information from the
server. The SCALANCE W78x adopts this time information without any further
conversion regarding daylight-saving or standard time.
Syntax of the Command Line Interface
CLI\SYSTEM\SNTP>
Command
Description
server [IP address]
Specifies the IP address of the
SNTP server.
tzone [hours]
Specifies the deviation of the time
zone of the SCALANCE W78x
according to UTC (Universal Time
Conversion) in hours.
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6.2.10 Fault State Menu Command
Information on Errors/Faults
This page displays information on faults/errors that have occurred. You can delete
this information if you click on the Remove Fault State button.
CLI\SYSTEM\FAULT>
Command
Description
Comment
fault [OFF]
Display the fault status and cause of
the fault.
You can reset the LED
and the fault status with
the command: "fault
OFF“. Ideally, however,
the cause of the problem
should be eliminated.
ipacknow [Index|All]
Displays or acknowledges (clears)
the IP Alive messages requiring
acknowledgment.
The fault state remains
active until all the fault
messages have been
acknowledged. The fault
state and the Fault LED
are cleared if the only
reason was an IP Alive
error message. The
command is not visible in
the client mode.
linkack [Index|All]
Displays or acknowledges (clears)
the Link Check messages requiring
acknowledgment.
The fault state remains
active until all the fault
messages have been
acknowledged. The fault
state and the Fault LED
are cleared if the only
reason was a Link Check
error message. The
command is not visible in
the client mode.
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6.2.11 Load & Save Menu Command
Saving and Loading Device Data
Clicking the Load & Save menu command first opens a page with the current
firmware version. The HTTP and TFTP submenus allow you to save device data in
external files or to transfer data from external files to the SCALANCE W78x. If the
device is operated with a C-PLUG, the data from the loaded configuration file is
stored on the C-PLUG. As long as the C-PLUG is inserted, the device works with
the configuration on the C-PLUG.
You can save the following device data in external files:
●
the configuration data of the SCALANCE W78x
●
the content of the log table
●
the firmware of the SCALANCE W78x
●
the client certificate (only in client mode)
●
the server certificate (only in client mode)
You can transfer the following data from external files to the SCALANCE W78x:
●
the configuration data of the SCALANCE W78x
●
the firmware of the SCALANCE W78x
●
the client certificate (only in client mode)
●
the server certificate (only in client mode)
For information on certificates, please refer to the System Manual Basics of
Industrial Wireless LAN.
Note
When you download the configuration data to a SCALANCE W78x, a restart is
performed so that the new data is adopted correctly. The restart takes place
automatically during the loading of HTTP and TFTP. The device can no longer be
reached using the old IP address if the downloaded configuration data contains a
new IP address.
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Note
As of firmware version V3.0, the file with the configuration data of the AP also
includes the following information
• Version of the configuration file
• Firmware version with which this configuration file was created
• Order number (MLFB) of the device with which the configuration file was
created
It is necessary that the configuration on the C-PLUG was generated with a
firmware version ≤ the firmware version on the destination device.
Example:
Configuration files generated with a device with firmware version V2.4 or older, can
be loaded on devices with firmware version V3.0 without causing problems.
Configuration files generated with a device with firmware version V3.0, cannot,
however, be loaded on devices with firmware version V2.4 or older.
Reusing Configuration Data
Saving and reading in configuration data reduces the effort if several SCALANCE
W78x devices have the same configuration and when IP addresses are obtained
over DHCP. Save the configuration data on a PC after you have configured a
SCALANCE W78x. Download this file to all other SCALANCE W78x devices you
want to configure. If necessary, you may need to assign an IP address to this
SCALANCE W78x first using the Primary Setup Tool.
How to Load or Save Data over HTTP / HTTPS
1. Specify the name of the file from which the data will be taken or where the data
will be saved in the relevant text box for the configuration data or firmware.
As an alternative, you can also use a file selection dialog that opens after you
click the Browse... button.
2 Start the save function by clicking the Save button. Start the load from file
function by clicking the Load button.
How to Load or Save Data over TFTP
1 Enter the IP address of the TFTP server in the TFTP Server IP text box.
2. Enter the port of the TFTP server in the Port text box in the default value does
not meet your requirements.
3. Click on the Set Values button before you enter any further information for
saving the data.
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4. Specify the name of the file (maximum 32 characters) from which the data will
be taken or where the data will be saved in the relevant text box for the
configuration data or firmware.
5 Start the save function by clicking the Save button. Start the load from file
function by clicking the Load button.
Configuration Package
If security certificates for the client and/or server are installed on a client, when the
configuration is saved, the client provides the option of saving the configuration file
with the certificates as a configuration package. With the aid of the configuration
package, clients can be replicated simply; in other words, identical settings AND
certificates are transferred to the clients in one step. Just as when you download
the configuration file, this is followed by a restart. No special measures are
necessary when downloading the configuration because the SCALANCE W
automatically recognizes the type of configuration file. As a result, it is only possible
to assign one common name for the configuration file or configuration package.
Syntax of the Command Line Interface
CLI\SYSTEM\LOADSAVE>
Command
Description
Comment
fwname [file name]
Specifies the name of a file from which
the firmware will be loaded or in which
the firmware will be saved. This name
can be a maximum of 32 characters
long.
fwload
Loads the firmware from a file.
fwsave
Saves the firmware in a file.
cfgname [file name]
Specifies the name of a file from which
the configuration data will be loaded or
in which the configuration data will be
saved.
cfgload
Loads the configuration / configuration
package from a file.
cfgsave
Saves the configuration data in a file.
logname [file name]
Specifies the name of a file in which the
log table will be saved.
logsave
Saves the log table in a file.
server
[IP address]:[port number]
Specifies the IP address and the port of
the TFTP server.
cltcert <certificate>
Specifies the name of the certificate for
the client.
In client mode only.
cltpass <password>
Authorizes use of the certificate,
In client mode only.
cltload
Downloads the client certificate from a
file.
In client mode only.
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Command
Description
Comment
cltsave
Saves the client certificate in a file.
In client mode only.
srvcert <certificate>
Specifies the name of the certificate for
the server.
In client mode only.
srvload
Downloads a server certificate from a
file.
In client mode only.
srvsave
Saves the server certificate in a file.
In client mode only.
cltdel
Deletes the client certificate.
In client mode only.
srvdel
Deletes the server certificate.
In client mode only.
pkgsave
Saves the Configuration Package in a
file over a TFTP server.
In client mode only.
Note
The functionality can be controlled over SNMP with the OID
1.3.6.1.4.1.4196.1.1.4.100.1.5.1.19 (snDownloadEcmCfgPackageControl).
Working with this function is analogous to working with the other OIDs in this
group.
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6.2.12 C-PLUG Menu Command
Information on the Content of the C-PLUG
This menu command provides you with detailed information on the C-PLUG. You
can also format the C-PLUG or provide it with new content. As soon as the device
is started with a C-PLUG inserted, the SCALANCE W starts up with the
configuration data on the C-PLUG. Changes to parameters are stored on the CPLUG and displayed over the Web and CLI.
The data in the memory of the device only becomes accessible when the device
restarts without a C-PLUG using the <Restart without C-PLUG> function.
C-PLUG State text box
This displays the status of the C-PLUG. The following are possible:
●
ACCEPTED
A C-PLUG with a valid and suitable content is inserted in the device.
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●
NOT ACCEPTED
C-PLUG missing or invalid or incompatible content of an inserted CPLUG. The status is also displayed when the C-PLUG was formatted
during operation.
●
NOT ACCEPTED, HEADER CRC ERROR
A C-PLUG with a bad content is inserted.
●
NOT PRESENT
No C-PLUG is inserted in the device.
C-PLUG Device Group text box
Indicates the SIMATIC net product line that used the C-PLUG in previous
operation.
C-PLUG Device Type text box
Indicates the device type within the product line that used the C-PLUG in
previous operation.
Configuration Revision text box
The version of the configuration structure. This information relates to the
configuration options supported by the device and has nothing to do with the
concrete hardware configuration. This revision information does not
therefore change if you add or remove modules or extenders, it can,
however, change if you update the firmware.
File System text box
Displays the type of file system on the C-PLUG.
File System Size text box
Displays the maximum storage capacity of the file system on the C-PLUG.
File System Usage text box
Displays the memory utilization of the file system of the C-PLUG.
C-PLUG Info String text box
Here, you will see all the additional information about the device that used
the C-PLUG during previous operation, for example, order number, type
designation, and the versions of the hardware and software.
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Modify C-PLUG list box, Modify button
You can only make settings in this box if you are logged on as administrator.
Here, you decide how you want to change the content of the C-PLUG. The
following alternatives are possible:
●
Copy internal Configuration to C-PLUG
The configuration in the internal flash memory of the switch is copied to
the C-PLUG; this is followed by a restart.
There is one important use case for this function: The device has started
up with a C-PLUG containing a bad configuration or a configuration
different from the device. If you have not yet made any configuration
changes after starting up the device, you can use this function to
overwrite the content of the C-PLUG with the original device
configuration.
●
Load default Configuration to C-PLUG and Restart
A configuration with all the factory default values is stored on the CPLUG. This is followed by a restart in which the SCALANCE W78x starts
up with these default values.
●
Clean C-PLUG (Low Level Format, Configuration lost)
Deletes all data on the C-PLUG and starts a low-level formatting function.
There is no automatic restart.
●
Create PRESET PLUG
Writes configuration data to a PRESET PLUG. For detailed information
on this topic, refer to Section 3.4
After making your selection, start the function by clicking the Modify button.
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C-PLUG Error Message
If the SCALANCE W78x detects a C-PLUG error during startup, a message is
displayed by Web Based Management. C-PLUG errors can have two causes:
●
The C-PLUG contains bad data or data for a different device type.
●
There is no C-PLUG in the SCALANCE W78x although a C-PLUG was present
prior to the last shutdown of the device.
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Syntax of the Command Line Interface
CLI\SYSTEM\CPLUG>
Command
Description
Comment
initdef
Reinitializes the C-PLUG and copies
the default configuration to it.
All information is deleted.
initmem
Reinitializes the C-PLUG and copies
the configuration currently stored
internally to it.
All information is deleted.
bootfrom [MEMORY]
Displays the source medium from
which the configuration is currently
being read: C-PLUG or MEMORY.
The restart is performed
automatically.
If the C-PLUG was
removed, you must
specify that the
configuration must be
read from internal
memory.
If a C-PLUG is inserted,
the system or as attempts
to read the configuration
from it. The bootfrom
[MEMORY] command
then has no effect.
preplug <dev>
Writes configuration data to a
PRESET PLUG. The index
parameter specifies the device for
which the PRESET PLUG will be
suitable:
1 SCALANCE W788-1PRO
2 SCALANCE W788-2PRO
3 SCALANCE W788-1RR
4 SCALANCE W788-2RR
5 SCALANCE W744-1PRO
6 SCALANCE W746-1 PRO
7 SCALANCE W747-1RR
8 IWLAN/PB Link
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6.3
Interfaces Menu
Introduction
The SCALANCE W78x has one Ethernet interface and up to two WLAN interfaces
that can be configured separately. In the pages of this menu, you can configure
both the wired Ethernet interface and the WLAN interface.
With the menu command Interfaces > WLAN1…2 > Virtual AP count in the Access
Point mode, you can also configure up to eight virtual access points (VAP0 …
VAP7) per wireless interface.
Note
VAPs are visible only after an AP count > 0.
6.3.1
Ethernet Menu Command
Transmission Speed and Mode
For a wired Ethernet interface, you only to specify the transmission speed / mode
parameters and the crossing over of the Ethernet connection. When you select the
entry Auto in the Speed / Mode list box, the SCALANCE W78x sets a suitable
speed and mode depending on the other network nodes and crosses over the
Ethernet connection.
If you select an entry other than Auto in the Speed / Mode list box, you must
specify the crossing over of the Ethernet connection manually with Ethernet
crossing.
Note
If you specify the mode, you must make the same settings on the partner device.
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Syntax of the Command Line Interface
CLI\INTERFACES\ETHERNET>
Command
Description
ethspeed [A|100F|100H|
10F|10H]
Specifies the transmission speed
and mode of the Ethernet interface:
A
automatic selection
by the SCALANCE W788
100F 100 Mbps full duplex
100H 100 Mbps half duplex
10F
10 Mbps full duplex
10H
10 Mbps half duplex
ethcross [E|D]
Manual selection of Ethernet
interface crossover. Possible only
when ethspeed is not set to auto.
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6.3.2
WLAN Menu Command
Enabling the Interface
Enabling interface by selecting Enable Interface.
Network name (only in access point mode)
Enter the network name of the wireless network in the SSID text box. If you have
used the Basic Wizard, a value is already entered here.
Infrastructure / Ad Hoc (only in client mode)
Select Infrastructure to connect to an access point. Ad hoc is used to connect
clients with each other without an access point. This is only possible when ad hoc
is set on all clients.
Transmission Mode
Specify the transmission mode in the Wireless Mode list box. If you have used the
Basic Wizard, a value is already entered here.
Note
IEEE 802.11h transmission (only in Access Point mode):
It is not possible to select the 802.11h protocol in all country settings. It is specified
by the configuration of Country code on the System page.
If the 802.11h protocol is selected, after applying the configuration with Set Values,
the comment (DFS is active for this country code appears behind the Enable
Interface check box.
With the automatically enabled Dynamic Frequency Selection function (DFS), prior
to communication, the access point checks whether configured or selected channel
(see Auto Channel Select) is free of signals from a primary user (for example
radar).
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If signals of a primary user are found on the configured or selected channel, the
access point follows the procedure outlined below:
●
Auto channel select = enabled
With automatic channel select, the access point changes to a different channel
and repeats the availability check for this channel.
●
Auto channel select = disabled
If the channel is fixed in the configuration, the access point changes to the
configured alternative channel and repeats the availability check for this
channel. If a primary user (for example radar) is discovered on the alternative
channel, a further channel is selected at random.
Communication with clients is started only when no primary user has been
discovered on the selected channel for one minute.
Outdoor AP mode (Access Point mode) / Outdoor Client mode (Client mode)
The SCALANCE W78x can be operated either in the indoor or outdoor AP mode.
In indoor AP mode, all the country-dependent permitted channels and transmit
power settings are available for operation in a building. In outdoor AP mode, the
selection of country-dependent channels and the transmit power for operation are
restricted for outdoor use. If the SCALANCE W is operated outdoors, make sure
that the device is not exposed to rain (installed under a roof) and is not exposed to
direct sunlight (installed with UV protection).
You enable this mode by selecting Outdoor AP mode.
Channel Selection
Select the Auto Channel Select check box if you want the SCALANCE W78x to
search for a free channel itself. If you want to specify a specific channel, make sure
that Auto Channel Select is not selected. You can specify a suitable channel in the
Radio Channel list box.
Auto Channel Select does not exist in the client mode. You can only set a channel
in the ad hoc mode.
IEEE 802.11h transmission:
If you have selected the 802.11h protocol for transmission in access point mode
and Auto Channel Select is not selected, the Alt. radio channel input box is
displayed below Radio channel. Here, you can select the alternative channel in
case signals of a primary user are found on the main channel.
Make sure that the alternative channel is not being used by other access points.
In the IEEE 802.11h transmission mode, it is not practical to select the WDS mode
at the same time. In WDS mode, all SCALANCE W78x devices must use the same
channel. If a signal from a primary user is detected by an AP, the channel is
changed automatically and the existing connection is then terminated.
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MAC Address of the Client (only in client mode)
A MAC address must be specified for the devices connected to the Ethernet port of
the SCALANCE W74x client before it can be reached. This MAC address is used
by the client for wireless communication with the access point. This can be done
automatically by the client adopting the MAC address of the first frame that it
receives over the Ethernet interface. If this is required, Auto find Adopt MAC must
be selected.
As long as the client is waiting for an Ethernet frame, it registers with the access
point using its own MAC address. As soon as the first Ethernet frame is received,
the client deregisters from the access point and immediately registers again with
the MAC address from the Ethernet frame. If there is now a link-down on the
Ethernet port, the client deregisters from the access point and registers again with
its own MAC address.
If several devices are connected to the client, you should not select this setting.
You also have the option of specifying the MAC address of the connected device
manually. To use this option, select Set 'Adopt MAC' manually and enter the MAC
address of the device connected to the client in the Adopt MAC text box.
To be able to address an entire network of devices downstream from the client,
Adopt own MAC must be selected. Remember that only layer 3 connections are
possible (TCP/IP).
If up to eight MAC addresses need to be served downstream from the client, the
layer 2 tunneling setting must be selected for SCALANCE W746-1PRO and
SCALANCE W747-1RR.
Note
The layer 2 tunneling functionality is supported by SCALANCE W 788 access
points as of firmware version V3.1. This setting meets the requirements of
industrial applications in which MAC address-based communication with several
devices downstream from the client is required. Clients with this setting cannot
connect to standard Wi-Fi devices and SCALANCE W access points with firmware
V3.0 or older.
Virtual AP count (only in access point mode of a W788xRR)
If you want to configure virtual access points (VAPs) on this AP, set the number of
virtual access points using the Virtual AP count list box. If Virtual AP count = 0 and
VLAN/Prio Tag is disabled, no VAPs are created.
You can define up to a maximum of 8 VAPs. The settings of VAP0 are made
directly in Interfaces/WLAN, the settings for VAP1...7 can be found in the
Interfaces/WLAN/VAP1...7 submenus.
By using virtual access points, various SSIDs (maximum of 8 per WLAN interface)
can be configured with different security settings. You can assign each virtual AP to
a particular VLAN.
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Set values
Apply the configuration by clicking Set Values.
If you have configured virtual access points (Virtual AP count > 0), in access point
mode, you will be requested to run a restart on the SCALANCE W78x after
clicking Set Values.
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Syntax of the Command Line Interface
CLI\INTERFACES\WLAN1>
or for the second wireless adapter (if it exists)
CLI\INTERFACES\WLAN2>
Command
Description
Comment
port [E|D]
Enable / disable wireless port.
ssid [network name]
Assigns a network name (SSID).
Available only in the
access point mode.
mode [A|B|G|H|T|U|X]
Selects the transmission standard:
A
802.11a
B
802.11b
G
802.11g
H
802.11h
T
802.11a Turbo
U
802.11h Turbo
X
802.11g Turbo
Depending on the country
code, some settings are
not possible and will then
be rejected.
802.11a Turbo cannot be
set in all countries.
autoch [E|D]
Enable / disable the channel
selection by the SCALANCE W78x.
Available only in the
access point mode.
channel [1...167]
Specifies the wireless channel.
altchan [channel]
Enters the channel number of the
alternative DFS channel.
Possible only in 802.11h
transmission.
adopt [MAC address]
MAC address of the device
connected to the client over
Ethernet.
Available only in the client
mode.
autoadopt [E|D|OWN|L2T]
Automatic adoption of the MAC
address of the device connected to
the client over Ethernet.
The OWN parameter means that the
client registers with the access point
with its own Ethernet MAC address.
With this setting, however, only IP
data traffic is possible.
Available only in the client
mode.
adhoc [E|D]
Select ad hoc or infrastructure
mode.
Available only in the client
mode.
anyssid [E|D]
With ANY SSID, the client connects
to the best access point in the
environment in which it is permitted
to connect.
Available only in the client
mode.
vapno [0...7]
Specifies the number of virtual
access points
outdoor [E|D]
Enable / disable outdoor AP mode
802.11 g
Open the ADVANCED G (802.11g)
menu
ADVANCED
Open the ADVANCED menu
DATARATES
Open the DATARATES menu
VAP1
Open the VAP1 menu
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vapno > 0.
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Command
Description
Comment
VAP2
Open the VAP2 menu
Displayed only when
vapno > 1.
VAP3
Open the VAP3 menu
Displayed only when
vapno > 2.
VAP4
Open the VAP4 menu
Displayed only when
vapno > 3.
VAP5
Open the VAP5 menu
Displayed only when
vapno > 4.
VAP6
Open the VAP6 menu
Displayed only when
vapno > 5.
VAP7
Open the VAP7 menu
Displayed only when
vapno > 6.
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6.3.3
Advanced Submenu
Configuring Transmission Characteristics
On this page, you can specify details of the transmission characteristics. You only
need to adapt the parameters on this page if the SCALANCE W78x cannot be
used as it is intended with the default settings.
Transmit Power
In the Transmit Power list box, you can specify the output power of the
SCALANCE W78x. It may be necessary to reduce the transmit power when using
antennas to avoid exceeding the maximum legal transmit power. Reducing the
transmit power effectively reduces cell size.
Beacons
Beacons are packets that are sent cyclically by a SCALANCE W78x to inform
clients of its existence. In the Beacon Interval text box, you specify the interval at
which the SCALANCE W78x sends beacons.
Only in the access point mode and with the client in the ad hoc mode
The Beacon Rate list box specifies the data rate of beacons. The higher the data
rate, the shorter the transmission range.
Only in access point mode
The Data Beacon Rate DTIM (Delivery Traffic Indication Map) parameter specifies
how often the SCALANCE W78x sends broadcast and multicast packets over the
wireless interface. If you enter 1 in this box, the SCALANCE W78x transmits
broadcast and multicast packets directly after each beacon (recommended setting
for normal network environments). The value 5 would mean that the SCALANCE
W78x collects the broadcast and multicast packets and sends them after every fifth
beacon.
Increasing this value allows a longer sleep mode for the clients but means a
greater delay for broadcast and multicast packets.
RTS/CTS
RTS/CTS (Request To Send/Clear To Send) is a method for avoiding collisions
based on the exchange of status information before sending the actual data
(Hidden node problem). To minimize network load resulting from the additional
protocol exchange, this method is used only when a packet size that you select
with the RTS/CTS Threshold is exceeded.
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Fragmentation
The Fragmentation Length Threshold parameter specifies the maximum package
size transferred on the radio link. Large packets are divided up into small packets
prior to transmission and then reassembled into the original size after they have
been received. This can be beneficial if the transmission quality is poor because
larger packets are more difficult to transmit. However fragmentation into smaller
packets means a poorer throughput.
Repetitions
There are two situations in which packets are repeated. The hardware repetition is
performed by the WLAN chip itself when it tries to repeat an unacknowledged
packet immediately. The number of attempted repetitions is specified with the HW
Retry number parameter.
If the number of retries is reached without success, the packet is temporarily
withdrawn and all other packets in the buffer are sent first. Following this,
transmission of the packet is attempted again. The number of such repetitions is
specified with the SW Retry number parameter.
Using Use SW Retry, the software repetition mechanism can be enabled or
disabled.
Shortened Preamble with 802.11b
The 802.11b standard allows the use of shortened preambles in the wireless
transmission of data packets. This increases the amount of user data.
Note
If you are using the CP 1515 and CP 7515 communications processors in one
wireless cell at the same time, the shortened preamble should not be used
otherwise the CP 1515 can only handle a significantly reduced amount of data
traffic when there is heavy load on the network.
Antenna Gain
The Antenna Gain parameter describes the antenna gain in dBi of an antenna
connected to a SCALANCE W.
There are now two boxes that can be selected: "Antenna Gain" and "Antenna
Type". If "Antenna Type" is set to "User Defined", any antenna gain can be entered
in Antenna Gain. Otherwise, the preconfigured value of the selected "Antenna
Type" is displayed.
It is necessary to set a specific value to make sure that the regulations of the
national authorities are adhered to. The national authorities, for example, specify all
usable channels, the corresponding maximum transmit power and other conditions
of use. You will find more detailed information on the regulations in your country
using the countrylist.log.
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Based on the settings for antenna gain and transmit power, the SCALANCE W
automatically selects the permitted channels. Under some circumstances, there
may be fewer permitted channels available for antennas with a higher antenna gain
than for antennas with a lower antenna gain.
The entries for the Siemens antenna models are supported in the Web interface by
an < Antenna type> selection list that automatically enters the correct value in the
input box. The values entered automatically take into account the different lengths
of the antenna connecting cables shown in the selection list following the type
name.
Note
If you select User defined, you have the option of entering dBi values as integers
for the antenna gain in the range from 0 through 30 dBi. Please remember to take
the losses of the antenna connecting cable into account.
Antennas
The Antenna Mode list box specifies the use of antennas.
●
The Diversity setting takes the best of the two antennas for the data
transmission. For each WLAN interface, both antennas must be connected.
Both antennas should also be of the same type and they should also illuminate
approximately the same space. If an access point is operated with the diversity
setting and the two antennas span different cells, this can have negative
effects.
●
With the setting Tx on A, Rx on B, antenna A is used to send and antenna B to
receive.
●
With the setting Tx on B, Rx on A antenna B is used to send and antenna A to
receive.
With the settings Diversity, Tx on A, Rx on B and Tx on B, Rx on A, both antennas
must be connected per WLAN interface. If only one antenna is connected, the
connected antenna must be set permanently. The second antenna socket must
also have a 50 Ω terminator fitted.
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Configuration Using Web Based Management and the Command Line Interface
W A
E X
D O
U N
N O
G :
IO N
C O N
A R E
A R D
H A
N
A
O
Z A R D .
E C T E Q U IP M E N T
IS K N O W N T O B E
U S
A 2
X 1
M
L 2
P 1 F O R L A N
L 2 D C 2 4 V
A 2
O N L Y
S IE M E N S
Figure 6-1
R N IN
P L O S
N O T
L E S S
N H A Z
A 1
A 1
X 2
L 1 2 4 V D C
A N T E N N A
4 4 -7 2 -2 2
M
S V P J M
B 2
7 8 8 -1 S T 0 0 -2 A A 6
N E C C la s s 2
D C 2 4 V 0 ,3 A
1 2 3
B 1
S C A L A N C E W 7 8 8 -2 P R O
Configuration of the Antenna Connectors of the SCALANCE W7xx
Scanning for Access Points (client mode only)
While the client is connected to an access point, it scans for other access points in
the background with which it can connect when necessary. There are three modes
for scanning access points that can be selected in the Background scan mode list
box.
If you set Disable, there is no scan for access points while the client is connected.
If you set Scan if Idle, there is a scan for access points when no data transfer takes
place for a certain time.
If you set Scan Always, access points are scanned continuously.
The Background scan interval parameter specifies the interval at which further
access points are scanned.
To optimize the scanning for further access points, you can specify channels for
the client on which other access points can be found. To allow this, the Background
Scan Ch.Select check box must be set and the channels of the other access point
are entered in the Background Scan Channels text box. Enter the channels
separated by blanks.
If the client finds a better access point, it attempts to connect to it. Before it
changes, the new access point must be better than the current access point by a
certain value. The threshold at which the client changes to the new access point
can be specified with the Roaming threshold parameter.
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Roaming when there is no Ethernet Interface (only in access point mode)
If the wired Ethernet interface is no longer available (cable break, connector
removed), a client connected over the wireless network is not aware of this. The
SCALANCE W78x can then force the logged on WLAN clients to roam by
deactivating its WLAN interface. The client then attempts to log on at a different
SCALANCE W78x. You enable this feature by selecting the Force roaming if link
down on Ethernet interface check box.
Enable WMM (only in access point mode)
With Wireless Multimedia, multimedia frames complying with the IEEE 802.11e
standard are transmitted at a higher priority (see Section 6.3.2, WLAN > User
priority).
Select the Enable WMM option if you want frames evaluated according to their
priority and sent prioritized over the WLAN interface.
According to the Wi-Fi standard, prioritized frames are classified as follows:
Access Category
Description
802.1d
Tags
WMM voice priority
Highest priority
Allows multiple concurrent VoIP calls, with low
latency and toll voice quality
7, 6
WMM Video priority
Prioritize video traffic above other data traffic.
One 802.11g or 802.11a channel can support 3-4
SDTV streams or 1 HDTV streams.
5, 4
WMM best effort
priority
Traffic from legacy devices, or traffic from
applications or devices that lack QoS capabilities.
Traffic less sensitive to latency, but affected by
long delays, such as Internet surfing.
0, 3
WMM background
priority
Low priority traffic (file downloads, print jobs) that
does not have strict latency and throughput
requirements.
2, 1
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Configuration Using Web Based Management and the Command Line Interface
Syntax of the Command Line Interface
CLI\INTERFACES\WLAN1\ADVANCED>
Command
Description
Comment
power [0...4]
Specifies by how many dB the
transmit power will be reduced
compared with full power:
0
Full power
1
-3 dB, half
2
-6 dB, quarter
3
-9 dB, eighth
4
Minimum power, -12 dB
beacon [20 ... 1000]
Specifies the beacon interval in
milliseconds.
dtim [1 ... 255]
Specifies the data beacon rate.
rtsthr [1 ... 2346]
Specifies the packet size as of which
RTS/CTS is used.
fragthr [256 ... 2346]
Specifies the size as of which
packets are fragmented.
bkscan [D|I|A]
Specifies the mode in which the
client scans for further access
points.
D
Disabled
I
Scan if idle
A
Scan always
Available only in the client
mode.
bkscanint [200...60000]
Interval at which the client scans for
further access points.
Available only in the client
mode.
bkchannel [channels]
Selection of channels on which the
client scans for further access
points.
The channels are entered separated
by blanks.
Available only in the client
mode.
bkchsel [E|D]
Enables / disables scanning for
further access points to specific
channels.
Available only in the client
mode.
force [E|D]
Enables / disables roaming if the
connection is lost on Ethernet
interface.
Available only in the
access point mode.
roamthr
Decides the threshold at which the
client changes to another AP.
low
changes at a
slightly higher
field strength to the AP
with the stronger signal.
medium
changes at a
moderately higher field strength
to the AP with the
stronger
signal.
high
changes at a
significantly higher field strength
to the AP with the
stronger
signal.
Operating Instructions SCALANCE W78x
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Available only in the
access point mode.
154
Configuration Using Web Based Management and the Command Line Interface
Command
Description
Comment
swretry [E|D]
Enables / disables the software retry
functionality.
swretno [0 ... 15]
Specifies the number of software
retries.
hwretno [0 ... 15]
Specifies the number of hardware
retries.
preamb [E|D]
Enables / disables the short
preamble.
When this function is
enabled, higher data rates
according to IEEE
802.11b are supported
(higher performance).
antenna [A|B|SA|SB|D]
Specifies which antennas are used:
A
Only antenna A
B
Only antenna B
SA Antenna A transmits
Antenna B receives
SB Antenna B transmits
Antenna A receives
D
The best of both antennas
(diversity)
With the IWLAN/PB Link
with one antenna socket,
the default (Antenna A)
must not be changed.
noise [A|L|M|H]
Set the noise filter
A
Automatic
L
Low
M
Medium
H
High
A strong noise filter allows
a more stable connection
but also a shorter
transmission range.
wmm [E|D]
Enables / disables frame
transmission taking into account
priority.
antgain [0...30
Set antenna gain in dBi
anttype [0...n]
Set antenna type:
Operating Instructions SCALANCE W78x
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To see the list, enter
"anttype ?".
155
Configuration Using Web Based Management and the Command Line Interface
6.3.4
SSID List Submenu (client mode only)
Note
The SSID List menu is available only when you use the SCALANCE W78x in Client
mode. You can specify the mode in the System menu.
Network Attachment of the Client
With this men command, you can specify how the SCALANCE W78x connects to a
network as client:
●
If the Connect to ANY SSID check box is selected, the SCALANCE W78x in
client mode attempts to connect to the network with the best transmission
quality and with suitable security settings. If the Suppress SSID broadcasting
setting is made for an access point, the SCALANCE W78x cannot log on there
with the ANY SSID.
●
If this check box is not selected, the SCALANCE W78x attempts to connect to
the network from the SSID list that has the best transmission quality.
An SSID is absolutely necessary in ad hoc networks and iPCF. The maximum
number of SSIDs in the SSID list is restricted to 32.
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Syntax of the Command Line Interface
CLI\INTERFACES\WLAN1\SSID>
Command
Description
Comment
add <network name>
Adds a network name (SSID) to the
SSID list.
Available only in the client
mode.
edit <index>
<network name>
Changes the network name (SSID)
at the index location in the SSID list.
Available only in the client
mode.
delete <Index>
Deletes the network name (SSID)
from the SSID list at the index
location.
Available only in the client
mode.
6.3.5
Advanced G Submenu
Properties of the 802.11g Standard
The IEEE 802.11g is upwards compatible with IEEE 802.11b, both use the 2.4 GHz
band. In contrast to 802.11b that specifies data rates up to 11 Mbps, 802.11g
provides for data rates up to 54 Mbps. The 802.11g standard also uses the OFDM
modulation scheme. This technology divides a data packet into several smaller
packets that are transmitted at the same time at different frequencies.
Special Options for 802.11g Settings
The options you can set in the Advanced G submenu relate to the way in which
management and control data (RTS/CTS frames, beacons) are sent in the 802.11g
mode. You can also specify that the SCALANCE W78x only supports 802.11gcompatible devices.
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Configuration Using Web Based Management and the Command Line Interface
Handling 802.11b Clients
The access point automatically detects whether 802.11b clients exist in the
environment. To avoid 802.11g packets colliding with 802.11b packets, the access
point can use the RTS/CTS method.
With the 802.11g CTS Mode list box, you specify the use of RTS/CTS (only in the
access point mode).
0 do not use RTS/CTS.
1 always use RTS/CTS with 802.11g packets.
2 only use RTS/CTS when there are 802.11b clients in environment.
You can set the data rate for RTS/CTS frames in the 802.11g CTS Rate list box.
With the 802.11g CTS Type list box, you specify whether a CTS or RTS/CTS is
sent.
802.11g Expansions
With the 802.11g Short Slot Time parameter, you specify whether or not the short
slot time is used. This short slot time should be supported by all
newer clients.
With the 802.11g Only Mode parameter, you can specify that only 802.11g clients
can log on at the access point and also that only 802.11g rates are permitted (only
in the access point mode). In this mode, only the OFDM modulation method is
used. This prevents 802.11b devices from registering. If 802.11g Only mode is
disabled, both 802.11b devices and 802.11.g devices can register with the access
point.
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Syntax of the Command Line Interface
CLI\INTERFACES\WLAN1\802.11G>
or for the second wireless adapter (if it exists)
CLI\INTERFACES\WLAN2\802.11G >
Command
Description
Comment
Available only in the
access point mode.
ctsmode [0|1|2]
Specifies whether the RTS/CTS
method is used for 802.11g packets:
0
Do not use CTS.
1
Always use CTS.
2
CTS depending on whether
802.11b
clients exist.
ctsrate [0|1|2|3]
Specifies the data rate for 802.11g
CTS frames:
0
1 Mbps
1
2 Mbps
2
5.5 Mbps
3
11 Mbps
ctstype [0|1]
Specifies the method for avoiding
802.11g packet collisions:
0
CTS only
1
RTS/CTS
sslot [E|D]
Enables / disables short slot times
between data packets.
only11g [E|D]
When this is enabled, only the
OFDM modulation technique is
supported.
Available only in the
access point mode.
overlap [E|D]
If this is enabled, 802.11b are also
search for on overlapping channels.
Available only in the
access point mode.
Optimize [1...4]
Specifies the optimization level for
detection of 802.11b clients:
1
IEEE standard method
2...4 proprietary
Available only in the
access point mode.
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6.3.6
Data Rates Submenu Command (access point mode only)
Variable Setting of the Transmission Rates
From the table showing all available data rates for the current WLAN mode
(802.11b, g, a etc.), you can select any combination of these data rates. The
access point will then use only the selected transmission rates for communication
with the clients.
The "Basic Rate“ parameter specifies that a client must be capable of this data rate
to be able to connect to the access point.
Figure 6-2
"edit" Screenshot:
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Configuration Using Web Based Management and the Command Line Interface
Syntax of the Command Line Interface
CLI\INTERFACES\WLAN1\Data Rates>
Command
Description
Comment
info
The following overview shows you
the available transmission rates and
their current configuration.
default
Enables the default setting for the
current WLAN mode
edit <Rate> <E | D> <E | D
Changes the settings for the
specified data rate (in Mbps). The
two parameters indicate whether the
rate should be used or is defined as
"Basic Rate".
Overview:
Rate
1
2
5.5
6
9
11
12
18
24
36
48
54
Operating Instructions SCALANCE W78x
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Example:
The command
"edit 5.5 d d"
disables the data rate 5.5
Mbps. The screenshot
shows the default setting
for the 802.11g mode.
| Enabled | Basic Rate
|
|
|
|
|
|
|
|
|
|
|
|
X
X
X
X
X
X
X
X
X
X
X
X
|
|
|
|
|
|
|
|
|
|
|
|
X
X
X
X
161
Configuration Using Web Based Management and the Command Line Interface
6.3.7
VAP Submenu Command
Description
You can only complete the pages of the virtual access points VAP1...VAP7 if you
have configured virtual access points at the higher level Interfaces > WLAN (Virtual
AP count > 0).
On this page, you can assign a separate SSID to the virtual access points; in other
words, the access point operates in multiple SSID mode.
SSID
Enter the SSID of the VLAN here.
Make sure that you also store the SSID of this VLAN in the configuration of the
client that you assign to this VLAN.
Note
You can configure separate security settings for each virtual access point (see
Section 6.4.1, WBM menu Security > Basic WLAN > WLAN1/2 > VAP1...7).
The security settings of the VAPs must meet those of the relevant VLANs.
Syntax of the Command Line Interface
CLI\INTERFACES\WLAN1>VAP1>
or for the second wireless adapter (if it exists)
CLI\INTERFACES\WLAN2>VAP1>
Command
Description
vap [E|D]
Enable /disable virtual access point
ssid [network name]
Assigns a network name (SSID).
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Configuration Using Web Based Management and the Command Line Interface
6.4
The Security Menu
Introduction
In this menu, you configure the security settings with which you want to operate
your SCALANCE W78x. Apart from selecting the authentication and encryption
scheme, this also includes the decision as to whether or not an external Radius
server is used and whether access is restricted based on MAC addresses (ACL).
Syntax of the Command Line Interface
CLI\SECURITY>
Command
Comment
It is only possible to configure the
SCALANCE W78x over the wired
Ethernet interface (E) or over all
interfaces (D).
mgmteth [E|D]
6.4.1
Description
Basic Wireless Menu Command
Authentication
Authentication protects the network from unwanted access.
In the Authentication Type box, you can choose between the following types of
authentication:
●
Open System
There is no authentication. Encryption with a fixed key can be selected as an
option. You can choose between WEP or AES based on the key length (see
Section 6.4.2).
Note
With the SCALANCE W78x in iPCF mode, only this setting is possible.
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Configuration Using Web Based Management and the Command Line Interface
●
Shared Key
In Shared Key authentication, a fixed key is stored on the client and access
point. This is then used for authentication and encryption. Once again, you can
choose between WEP or AES based on the key length (see Section 6.4.2).
Note
When using an open system with encryption or shared key in conjunction with
ACL lists, note the information in Section 6.4.3 ACL menu command..
●
WPA
Secure WPA/RADIUS authentication uses an external RADIUS server (IEEE
802.1x). With this method, the client logs on at a RADIUS server based on a
certificate (EAP-TLS) or a combination of user name and password (EAPPEAP or EAP-TTLS / internal authentication method MSCHAPv2). As an
option, the RADIUS server then identifies itself to the client using a certificate.
Following successful authentication, the client and RADIUS server generate
key material that is used for data encryption. AES or TKIP can be used as a
secure encryption method.
●
WPA-PSK
WPA authentication works without a RADIUS server (IEEE 802.1x). A fixed key
(Pre-Shared Key) is stored on every client and access point and is used for
authentication and further encryption. AES or TKIP can be used as a secure
encryption method.
Note
The key can be 8 to 63 ASCII characters or exactly 64 hexadecimal characters
long. It should be selected so that is complex for example consisting of random
numbers, letters (upper-/lowercase), have few repetitions and special
characters). Do not use known names, words or terms that could be guessed. If
a device is lost or if the key becomes known, the key should be changed on all
devices to maintain security.
●
802.1x (Radius)
Port-related access check over an external RADIUS server (IEEE 802.1x). With
this method, the client logs on at a RADIUS server based on a certificate (EAPTLS) or a combination of user name and password (EAP-PEAP or EAP-TTLS /
internal authentication method MSCHAPv2). As an option, the RADIUS server
then identifies itself to the client using a certificate. Following successful
authentication, the client and RADIUS server generate key material that is
used for data encryption. WEP is used as a weak encryption method.
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●
WPA2-PSK
WPA2-PSK is based on the WPA2 standard, WPA authentication, however,
operates without a RADIUS server. Instead of this, a key (pass phrase) is
stored on every client
and access point and this is used for authentication and further encryption.
AES or TKIP is used as the encryption method, AES represents the standard
method.
●
WPA2
WPA2 (Wi-Fi Protected Access 2) is a further development of WPA and
implements the functions of the IEEE 802.11i security standard. WPA2 uses
the additional encryption protocol CCMP that allows fast roaming in mobile ad
hoc networks with its preauthentication. A client can log on in advance and
several access points so that the normal authentication can be omitted.
A RADIUS server is used to authenticate the client with an access point. The
client logs on at a RADIUS server based on a certificate (EAP-TLS) or a
combination of user name and password (EAP-PEAP or EAP-TTLS / internal
authentication method MSCHAPv2). As an option, the RADIUS server then
identifies itself to the client using a certificate. Following successful
authentication, the client and RADIUS server generate key material that is
used for data encryption. AES or TKIP is used as the encryption method, AES
represents the standard method.
●
WPA-Auto-PSK
Setting with which an access point can process both the WPA-PSK as well as
WPA2-PSK type of authentication. This is necessary when the access point
communicates with different clients, some using WPA-PSK and others WPA2PSK. The same encryption method must be set on the clients.
●
WPA-Auto
Setting with which an access point can process both the WPA and WPA2 type
of authentication. This is necessary when the access point communicates with
different clients, some using WPA and others WPA2. The same encryption
method must be set on the clients.
Encryption
Encryption protects the transferred data from eavesdropping and corruption. You
can only disable encryption if you have selected Open System for authentication.
All other security methods include both authentication and encryption.
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Configuration Using Web Based Management and the Command Line Interface
Encryption Methods
If you have selected Open System including encryption or Shared Key as the
authentication, you will need to define a key in the Keys menu (see Section 6.4.2).
●
WEP (Wired Equivalent Privacy)
A weak, symmetrical stream encryption method with only 40- or 104-bit long
keys based on the RC4 algorithm (Ron’s Code 4).
If you have selected WPA-PSK or WPA (RADIUS) as the authentication, the
following alternatives are available in the Cipher box:
●
TKIP (Temporal Key Integrity Protocol)
A symmetrical stream encryption method with the RC4 algorithm (Ron’s Code
4). In contrast to the weak WEP encryption, TKIP uses changing keys derived
from a main key. TKIP can also recognize corrupted packets.
●
AES (Advanced Encryption Standard)
Strong symmetrical block encryption method based on the Rijndael algorithm
that further improves the functions of TKIP.
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Configuration Using Web Based Management and the Command Line Interface
RADIUS Authentication Method (only for W788 in client mode)
If a client is authenticated over an external RADIUS server, you can use the
"RADIUS authentication type" selection list to specify a method for external
authentication. As default, the "Auto" value is selected so that the client provides a
RADIUS server with all supported methods. Any other selection restricts the
support by the client to this one method. This step may be necessary because
some RADIUS servers do not evaluate the response of the client completely or
correctly.
The following options are available:
●
EAP TLS
Extensible Authentication Protocol - Transport Layer Security.
Uses certificates for authentication
●
EAP TTLS
Extensible Authentication Protocol - Tunnel Transport Layer
Security. After setting up the TLS tunnel, MS-CHAPv2 is used for internal
authentication.
●
PEAP
Protected Extensible Authentication Protocol. Alternative draft
protocol of IETF for EAP-TTLS
Additional Entries for WPA-PSK and WPA2-PSK
To use the WPA-PSK scheme, you must enter a string in the Pass Phrase box that
is used by the SCALANCE W78x to initialize dynamic key generation. In the Group
Key Update Interval box, you specify the time after which a new key is generated.
Suppress SSID broadcasting
With the Suppress SSID broadcasting setting, the SCALANCE W78x is only ever
accessible to clients that know its SSID. This method can be used to protect the
SCALANCE W78x from unauthorized access.
Note
Since no encryption is used for the SSID transfer, this function can only provide
basic protection against unauthorized access. The use of an authentication method
(for example WPA (RADIUS) or WPA-PSK if this is not possible) provides higher
security.
You must also expect that certain end devices may have problems with access to a
hidden SSID.
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Inter SSID Communication check box
Selecting this check box allows communication between WLAN clients registered
at different SSIDs of an access point.
Example 1:
A SCALANCE W788-2xx was defined with different SSIDs for
each of the wireless cards.
Example 2:
A SCALANCE W788-1xx is used with multiple SSIDs.
Note
On a SCALANCE W788-2xx, the Inter SSID communication function must be
enabled on both WLAN interfaces or on all VAPs to allow communication between
the clients with different SSIDs.
Note
If VLANs are configured for the SSIDs, this setting can prevent communication
between the SSIDs according to the VLAN rules.
Intracell Communication list box
●
Intracell blocking
This setting prevents WLAN client communication within an SSID.
●
Ethernet blocking
This setting prevents WLAN client communication over the Ethernet interface
of the access point.
●
Disabled
This setting enables both WLAN client communication within an SSID as well
as WLAN client communication over the Ethernet interface.
To illustrate the situation, there is an overview of the effects of the Inter SSID
Communication and Intracell Communication settings below.
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Settings
Inter SSID
communication
Possible Communication
Intracell
Communication
within
an SSID
Enabled
Disabled
Enabled
Intracell
blocking
Enabled
Ethernet
blocking
x
Disabled
Disabled
x
Disabled
Intracell
blocking
Disabled
Ethernet
blocking
with
another
SSID
x
to the Ethernet
network
x
x
x
x
x
x
x
x
Syntax of the Command Line Interface
CLI\SECURITY\BASIC\WLAN1>
or for the second wireless adapter (if it exists)
CLI\SECURITY\BASIC\WLAN2>
Command
Description
Comment
authent
[0|1|2|3|4|5|6|7|8]
Specifies the authentication type.
For the parameter n, enter a number
between 0 and 4 for the type
authentication:
0
Open System
1
Shared Key
2
WPA (RADIUS)
3
WPA-PSK
4
802.1x (RADIUS)
5
WPA2
6
WPA2-PSK
7
WPA-Auto
8
WPA-Auto-PSK
With the authentication
types 7 (WPA-Auto) and 8
(WPA-Auto-PSK), the
encryption method of
WPA and WPA2
or
WPA-PSK & WPA2-PSK
must be the same.
encrypt [E|D]
Encryption enabled / disabled.
cipher [OFF|AUTO|WEP|
AES|TKIP]
Specifies the encryption scheme.
keysrc [0..2]
Select the key source.
Enter 0 as the parameter if the key is
managed by the server. Enter 1 in
the key will be provided by a
RADIUS server. Enter 2 if mixed
operation is required.
defkey [1|2|3|4]
Selects the default WEP key.
wpaphrase [WPA password]
Enter the WPA-PSK password.
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The password can be 8 to
63 ASCII characters or
exactly 64 hexadecimal
characters long.
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Command
Description
Comment
grkint [interval]
Specifies the "Group Key Update
Intervals" in WPA-PSK.
Interval in seconds,
(0; 36…36000), 0 = OFF
supssid [E|D]
Enable / disable Suppress SSID
broadcasting functionality.
Intracell communication
intracom [D|I|E]
Disable / Intracell or Ethernet
blocking)
Disable = no restriction of data traffic
Intracell = blocking of data traffic
between the clients in the cell
Ethernet = blocking of data traffic to
Ethernet
Inter SSID communication
ssidcom [E|D]
(Enable / Disable communication to
other SSIDs)
Enable = data traffic with other
SSIDs permitted
Enable = data traffic with other
SSIDs blocked
username [name]
Specifies the user name for the
RADIUS server.
In client mode only.
password [password]
Specifies the password for the
RADIUS server.
In client mode only.
chkserver [E|D]
Enables / disables authentication of
the server.
In client mode only.
radauth [type]
(Set Authentication Type offered by
client to:
AUTO, EAP_TLS, EAP_TTLS,
PEAP)
VAP
For each virtual access point VAP1 to VAP7, you configure the following security
settings described earlier:
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●
Authentication
●
Enable encryption
●
Encryption method
●
Select the default WEP key
●
Enter the WPA-PSK password
●
Specify the Group Key Update Interval in WPA-PSK.
●
Enable Suppress SSID broadcasting
Where they apply, all other security parameters are adopted from the Security >
Basic > WLAN1 or WLAN2 page.
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Syntax of the Command Line Interface
CLI\SECURITY\BASIC\WLAN1>VAP1
or for the second wireless adapter (if it exists)
CLI\SECURITY\BASIC\WLAN2>VAP1
Command
Description
Comment
authent
[0|1|2|3|4|5|6|7|8]
Specifies the authentication type.
For the parameter n, enter a number
between 0 and 4 for the type
authentication:
0
Open System
1
Shared Key
2
WPA (RADIUS)
3
WPA-PSK
4
802.1x (RADIUS)
5
WPA2
6
WPA2-PSK
7
WPA-Auto
8
WPA-Auto-PSK
With the authentication
types 7 (WPA-Auto) and 8
(WPA-Auto-PSK), the
encryption method of
WPA and WPA2 or
WPA-PSK & WPA2-PSK
must be the same.
encrypt [E|D]
Encryption enabled / disabled.
cipher [OFF|AUTO|WEP|
AES|TKIP]
Specifies the encryption scheme.
defkey [1|2|3|4]
Selects the default WEP key.
wpaphrase [WPA password]
Enter the WPA-PSK password.
The password can be 8 to
63 ASCII characters or
exactly 64 hexadecimal
characters long.
grkint [interval]
Specifies the "Group Key Update
Intervals" in WPA-PSK.
Interval in seconds,
(0; 36…36000), 0 = OFF
supssid [E|D]
Enable / disable Close Wireless
System functionality.
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6.4.2
Keys Menu Command
Specifying the WEP/AES Key
To allow you to enable the encryption for the Open System and Shared Key
authentication methods, you must first enter at least one key in the key table. You
can choose between WEP or AES encryption based on the key length. 5 or 13
ASCII or 10 or 26 hexadecimal characters specify a weak WEP key (40/104 bits).
16 ASCII or 32 hexadecimal characters, on the other hand, define a strong AES
key (128 bits).
You can also create keys for WDS Redundancy and ACL Private (these are not
supported by all clients for ACL).
Note
When operating the CP 7515, note the following when configuring the keys on the
SCALANCE W78x:
The ACL key and the WEP/AES key must be of the same length since the CP 7515
only allows a uniform key length. If the Windows-specific program Zero-Config is
used even the keys must be the same.
Syntax of the Command Line Interface
CLI\SECURITY\KEYS\WLAN1>
or for the second wireless adapter (if it exists)
CLI\SECURITY\KEYS\WLAN2>
Command
Description
add <Len> <Key> [index]
Adds at a key at the end or at the
specified Index of the table.
edit <index> <Len> <Key>
Changes the key at the Index
location.
delete <Index>
Deletes the key at the Index
location.
clearall
Deletes all keys.
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Comment
Indexes from 5 onwards
are private keys
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Configuration Using Web Based Management and the Command Line Interface
6.4.3
ACL Menu Command
Note
The ACL menu is available only when you use the SCALANCE W78x in the access
point mode. You can specify the mode in the System menu.
Access Rights for Individual Clients
The access control list (ACL) is and assignment of MAC addresses and access
rights.
If ACL is enabled, prior to data transfer, the SCALANCE W78x checks whether the
necessary permissions for the communication partner (identified by the MAC
address) are entered in the ACL table
Note
Since no encryption is used for MAC address transfer, this function can only
provide basic protection against unauthorized access. The use of an authentication
method (for example WPA (RADIUS) or WPA-PSK if this is not possible) provides
higher security.
Enabling the ACL
In Web Based Management, there is a list box for the use of ACL.
To enable ACL, you must set the global release to either Enabled or Strict:
Enabled
All clients entered in the ACL are handled according to the ACL entry. Clients not
entered in the ACL have access to the access point. This setting can be used to
deny access by certain clients.
Strict
All clients entered in the ACL are handled according to the ACL entry. Clients not
entered in the ACL have no access to the access point. This setting can be used to
allow access by certain clients.
Disabled
The access control this is not used.
Changing an Entry in the ACL
Click the relevant MAC address to change the entry in the ACL. With the Sel check
box, you decide whether or not an ACL entry is used. The Del check box is used to
delete an entry from the ACL.
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New Entry in the ACL
Click the New button to create a new entry in the ACL. A page appears on which
you can make the necessary settings. Enter the MAC address of the client in the
MAC Address text box. You specify the access permissions of the client in the
Permission list box:
Allow
The client has access to the access point.
Deny
The client does not have access to the access point.
Default Key
The client only has access to the access point when it uses the default key for
encryption of the data. To allow this, you must specify a valid default key for the
SCALANCE W78x (for example in the WBM Security menu) that is also used by
the client.
Private Key
With this setting, you can use different keys for different clients. You must first
create the private keys with the Keys menu command. You can select one of these
keys in the Key number list box. The client only has access to the access point
when it uses this private key. For this function, the client must support private keys.
Note
The private key set in the ACL must also be available in the key list on the client.
The client must also use this private key for communication in Security->Basic>WLAN (the key must be set),if an open system with encryption or shared key is
used.
The private key is used on this connection for the transferred unicast packets
intended for the wireless client.
All multicast and broadcast packets are transferred with the public key set on the
access point. The wireless client entered in the ACL list must therefore also enter
this public key at the same location in its key list as the access point.
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Example
In its cell, an access point uses the setting shared key with a 128-bit public key
(default key 1) for encryption of the data traffic.
All wireless clients that register at this access point, require this public key at
position 1 in their key list for communication.
If access for certain wireless clients is now restricted by the ACL list of the access
point on the basis of a private key, the private key must first be stored in the key list
of the access point and the client to be restricted.
The next activity is to enter the MAC addresses of these wireless clients in the ACL
list of the access point and to give it the private key. If these wireless clients are
intended to continue communication, the private key must be set on the wireless
client directly under Security->Basic->WLAN and used for the encryption.
Otherwise the clients could receive broadband or multicast packets, but no longer
be addressed directly with unicast packets.
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Syntax of the Command Line Interface
CLI\SECURITY\ACL\WLAN1>
or for the second wireless adapter (if it exists)
CLI\SECURITY\ACL\WLAN2>
Command
Description
Comment
aclmode [E|D|S]
Global release of ACL:
E
Enable
D
Disable
S
Strict
Only in access point
mode
add <MAC> [A|Y|K|P][key]
Create a new entry in the ACL:
MAC MAC address of the client
Only in access point
mode
edit <index> [E|D]
[A|Y|K|P] [Key]
A
Y
K
P
Allow
Deny
Default Key
Private Key
Key
Key index for private key
Change an existing ACL entry:
index Number of the ACL entry
E
D
Enable
Disable
A
Y
K
P
Allow
Deny
Default Key
Private Key
Key
Key index for private key
Only in access point
mode
delete <Index>
Delete an existing ACL entry:
index Number of the ACL entry
Only in access point
mode
clearall
Deletes all ACL entries.
Only in access point
mode
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Configuration Using Web Based Management and the Command Line Interface
6.4.4
RADIUS Server Menu Command
Note
The RADIUS menu command is available only when you use the SCALANCE
W78x in access point mode. You can specify the mode in the System menu.
Authentication over an External Server
The concept of RADIUS is based on an external authentication server. A client can
only access the network after the SCALANCE W78x has verified the logon data of
the client with the authentication server. Both the client and the authentication
server must support the EAP protocol (Extensive Authentication Protocol). The
SCALANCE W supports the external authentication mechanisms EAP-TLS, EAPTTLS and PEAP.
Syntax of the Command Line Interface
CLI\SECURITY\RADIUS>
Command
Description
server [IP address]
Specifies the IP address of the
primary RADIUS server.
server B [IP address]
Specifies the IP address of the
backup RADIUS server.
port [port]
Specifies the port of the primary
RADIUS server.
port B [port]
Specifies the port of the backup
RADIUS server.
Secret [password]
Specifies the password for the
primary RADIUS server.
secret B [password]
Specifies the password for the
backup RADIUS server.
maxreq [max. number]
Maximum number of queries to the
RADIUS server.
maxreq B [max. number]
Maximum number of queries to the
RADIUS server. (backup server)
authprd [time in s]
Period for repeating authentication.
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Comment
The default is 3600 s.
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Configuration Using Web Based Management and the Command Line Interface
6.4.5
Access Menu Command
Access Permissions for IP Addresses
In this menu, you specify the access permissions for IP addresses. You can specify
whether management access (SNMP, Telnet, WBM) is possible with the defined
addresses:
●
Management access is possible only with the defined addresses.
Or:
●
Management access is possible with all IP addresses not included in the list.
Note
The defined access rights also apply to the PC used for configuration. If you have
not entered the local IP address and have set the ACL mode to Accessed, no
further access to the SCALANCE W78x is possible.
You should also note that the IP address of the client can change if you use DHCP
without reservation.
Syntax of the Command Line Interface
CLI\SECURITY\ACCESS>
Command
Description
access [E|D]
Enable / disable access control list.
statmgmt [A|D]
It is possible to access or not
possible to access the IP addresses
of the access control list (Accessed /
Denied).
add <IP>
Adds a new IP address
edit <Index|IP> [E|D]
Enables / disables the entry in the
table specified by the index or IP
address.
delete <Index|IP>
Deletes the entry.
clearall
Clears the access control list.
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Configuration Using Web Based Management and the Command Line Interface
6.5
The Bridge Menu
Introduction
A bridge is a network component that connects two networks. A bridge is not
dependent on the protocol; management of the data packages is based on the
physical address of the network nodes (MAC address).
The SCALANCE W78x provides bridge functionality because it handles data
exchange between wired and wireless Ethernet. The following sections describe
the functions that are available and how you configure and use them.
Deleting Aged Bridge Information
The SCALANCE W78x saves the information about which MAC address can be
reached over which port in a learning table. Entries in this list are deleted
automatically when there is no further data transfer for the corresponding MAC
addresses. You can decide the length of time after which addresses are deleted if
no data is sent using the Aging Time parameter on the start page of the Bridge
menu.
Syntax of the Command Line Interface
CLI\BRIDGE\>
Command
aging [E|D|aging time]
Operating Instructions SCALANCE W78x
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Description
Comment
Enables / disables automatic
deletion of information on the
assignment of MAC addresses and
ports. With the Aging time
parameter, you can change the time.
Values between 10 s and
1,000,000 s are possible
for the Aging time.
The default is 300 s (5
min)
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Configuration Using Web Based Management and the Command Line Interface
6.5.1
WDS Menu Command
Note
The WDS menu command is available only when the SCALANCE W78x is used in
access point mode and iPCF is not activated. You can specify the mode in the
System menu.
Communication between SCALANCE W78x Devices
In normal operation, the SCALANCE W78x is used as an interface to a network
and communicates with clients. There are, however, situations in which several
SCALANCE W78x devices need to communicate with each other, for example to
extend wireless coverage or to set up a wireless backbone. This mode is possible
with WDS (Wireless Distributed System).
Note
With the firmware update to ≥ V3.0, the SCALANCE W78x-xRR devices need to be
reconfigured if you use WDS or redundancy and use the MAC address and not the
sysName.
These functions are then based on the MAC address that changed with the
introduction of VAPs with V3.0.
Configuration
In the MAC / sysName column, enter the MAC address or the system name of the
SCALANCE W78x with which you want to communicate. If you select the Enc
check box, encryption is used.
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Note
In WDS mode, the following restrictions apply:
●
All SCALANCE W78x devices that will communicate with each other must use
the same channel.
●
You can only use the encryption schemes WEP and AES.
●
If you want to attach a different access point from the SCALANCE W78x over
WDS, you must configure the MAC address. Detection using the sysName
parameter does not work in this situation.
●
In the IEEE 802.11h transmission mode, it is not practical to select the WDS
mode at the same time. In WDS mode, all SCALANCE W78x devices must
use the same channel. If a signal from a primary user is detected by an AP,
the channel is changed automatically and the existing connection is then
terminated.
To enable the entry, you must select the Sel check box.
Syntax of the Command Line Interface
CLI\BRIDGE\WDS\WLAN1>
or for the second wireless adapter (if it exists)
CLI\BRIDGE\WDS\WLAN2>
Command
Description
add <MAC|Name>
[SE|SD][Key]
Adds a new WDS connection. Enter
either a MAC address or a
sysName. With the SE or SD
parameters, you can enable or
disable encryption. If encryption is
enabled, the key must also be
specified.
edit <index> [E|D]
[SE|SD] [Key]
Changes the WDS connection
specified by Index. With [E|D], you
can enable / disable the connection.
delete <Index>
Deletes the connection with the
specified index.
clearall
Deletes all WDS connections.
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Configuration Using Web Based Management and the Command Line Interface
6.5.2
VLAN Menu Command
Assignment and Management of the VLAN IDs
The Current VLAN Configuration dialog displays a table with an overview of the
configured VLAN IDs (VID).The assignment of the configured ports of the access
point is also displayed as a member of these VLANs.
The Name is used to identify an entry within the current table. Member List displays
'U' for untagged member of a VLANs or '–' if a port is not member of a VLAN. The
sequence is sorted from left to right in ascending order; in other words, according
to the ID of the interface (WLAN 1, WLAN 1 VAP 1, WLAN 2 VAP 2… or WLAN 1
WDS 1, WLAN 1 WDS 2...).
Entries in red, indicate members in the table, entries in black indicate the
configured port VLAN IDs.
If an interface is member of a VLAN ID, that is not the same as the port VID,
frames arriving from Ethernet with this VLAN ID are accepted. Outgoing frames,
however, always have the port VLAN ID.
Click on VID or Name to open the configuration page for VLAN IDs. With New, you
create a new VLAN ID, with Refresh, you can update the table.
Note
The Ethernet interface does not remove VLAN tags from outgoing frames.
If the VLAN is active, the WLAN interfaces always remove all VLAN tags from the
outgoing frames.
Member List
Meaning
U
If VID equals port VID; in other words untagged frames
from WLAN are given this VID.
U
If the port is a member of the VID; in other words, tagged
frames from Ethernet are forwarded on this port.
—
If the port is not a member of the VID; in other words, all
the frames coming from Ethernet are blocked / discarded
with the corresponding VLAN ID. Frames containing
unconfigured VIDs and untagged frames are always
blocked if the VLAN is active.
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VLAN ID Settings
The VLAN ID box allows you to enter a new VID as long as no port is assigned
explicitly as member. Otherwise, the VID can no longer be modified.
Representat
ion
Settings
Meaning
1
Field can be edited.
If all editable boxes are displayed in this way and if
the VID is not configured as port VID, the VID is
deleted when you exit this page.
Clicking on the field changes to depiction 2.
2
Field can be edited.
Clicking on the field changes to depiction 1.
3
Field cannot be edited.
Al entries for VLAN membership are being used.
4
Field cannot be edited.
VID corresponds to the port VID
5
Field cannot be edited.
Corresponding port is set to all VIDs,
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Ports
Port: Overview of the ports in the form of a table.
SSID: SSID for WLAN interface, no entry for WDS or management and
redundancy.
Priority: Configured priority of the port.
Port VID: VLAN ID directly assigned to the port.
Member: The VLAN membership assigned to the port.
Enabled: VLAN support can then be enabled / disabled directly.
Clicking on a port opens the VLAN Settings configuration page.
Note
If you use a Radius server for authentication, this must the accessible over the
management VLAN. Among other things, the management port also handles the
functions: HTTP, HTTPS, WBM, Telnet, SSH, Ping, DHCP, TFTP, SNMP, SNTP
and Syslog.
Note
The IP and MAC-based nodes downstream from a client with enabled layer 2
tunneling function ( L2T client) adopt the same VLAN properties as the client.
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Example: An L2T client is connected to the access point over the WLAN1 VAP3
interface. WLAN1 VAP3 is a member of the VLAN ID 33 that is assigned priority 6.
For the L2T port, this means that the devices connected downstream from the L2T
client and the client itself are also members VLAN ID 33 with priority 6.
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VLAN Settings
VLAN enabled: VLAN support can then be enabled / disabled directly.
User Priority: Prioritization of the data traffic over the port. Untagged frames are
given this priority.
Port VLAN ID: Entry of the VLAN ID.
VLAN Membership
All VIDs: Automatic setting of the port as member of all configured VIDs.
Specific VIDs only: Member of up to eight, freely assignable configured VIDs per
port.
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VLAN enable (only in access point mode of a W788xRR)
Select the VLAN enable option if you want to enable the VLAN function. If VLAN
enable is selected, all frames of this VAP are given a VLAN tag.
User priority (only in access point mode of a W788xRR)
Specify the priority of the frames of this VAP with the User priority list box. The
priority is evaluated by the connected VLAN-compliant switches (for example,
SCALANCE X400) of the network. The priority rises with the ascending numbers:
Note
The priority generally increases with the ascending numbers. The exception is
priority 0, that has a higher priority than priority classes 1 and 2 and has the same
priority as class 3.
●
0 - Best Effort (BE)
normal data traffic
●
1 - Background (BK)
non time-critical data traffic
●
2 - Spare (--)
this priority is reserved
●
3 - Excellent Effort (EE)
data traffic with highest priority
●
4 - Controlled Load (CL)
●
5 - Voice (VI), < 100 ms latency and jitter
video/multimedia
●
6 - Voice (VO), < 10 ms latency and jitter
voice over IP
PNIO
●
7 - Network Control (NC)
internal network control frames
Default is 0 - Best Effort (BE).
Note
Both voice over IP and PNIO have priority 6.
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Port VLAN ID (only in access point mode of a W788xRR)
Here, you enter the VLAN ID (VID) of the VLAN on which the virtual access point
will communicate.
The individual VLANs are configured in the VLAN-compliant switches (for example
SCALANCE X400). The VID of a VLAN is in the range from 1 to 4094.
VLAN membership (only in access point mode of a W788xRR)
Here, you specify the VLANs for which the virtual access point will be a member or
which other VLANs the port VLAN ID (VID) entered above will be assigned to.
The following alternatives in the assignment are possible:
●
all
The VAP is member of all VLANs.
●
only
The VAP is member only of the VLANs entered below.
Here, enter the VLAN ID (VID) of up to 8 VLANs in which the VAP will be a
member.
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Syntax of the Command Line Interface
CLI\BRIDGEVLAN\VLAN_ID>
Command
Description
info
Shows the currently configured VLANs and their
relationship to the ports.
add <VLAN-ID> [u [Ports]]
Inserts a new VLAN.
Ports: Specifies the ports
configured for the VLAN.
u:
The port is a member of the VLAN.
Frames are sent without VLAN tag.
Examples:
add 100 u 2 4
Creates an entry with the VLAN ID 100. Ports 2 and 4
are members of this VLAN.
edit <VLAN-ID>
[- [Ports],]
[u [Ports],]
Changes the membership of ports in a VLAN. The
parameters correspond to those of the add command.
Examples:
edit 100 - 2
Port 2 no loner belongs to the VLAN with ID 100.
delete <VLAN-ID>
Deletes the VLAN with the specified VLAN ID from the
configuration of the SCALANCE W78x.
CLI\BRIDGE\VLAN\PORTS>
Command
Description
info
Displays an overview of the ports and corresponding
VLAN settings.
vlan <Port> <E|D>
Enables / disables VLAN for the specified port.
portvid <Port> <VLAN-ID>
Received frames without a VLAN tag at the specified
port are given a VLAN tag with the <VLAN-ID>.
portprio <Port> <Priority>
The priority assigned to untagged frames according to
802.1d.
member <Port> <all|specific>
The specified port is a member of all VLANs or only the
VLAN configured in VLAN ID (specific, see above).
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6.5.3
Learning Table Menu Command
Assignment of MAC Address and Port
The learning table contains the information about whether a MAC address can be
reached over the wired Ethernet interface or over the wireless interfaces. The
SCALANCE W78x obtains this information from the active data exchange. The
learning table also contains information on clients and on up to 8 devices
connected downstream from it operating in the layer 2 tunneling mode.
6.5.4
ARP Table Menu Command
Assignment of MAC Address and IP Address
The ARP protocol (Address Resolution Protocol) obtains the corresponding MAC
address of a known IP address. The page of this menu command also indicates
the interface over which an address can be reached. The last column indicates
how the information was obtained (for example dynamic if it was obtained during
operation or static if it was configured).
6.5.5
Spanning Tree Menu Command
Note
The Spanning Tree menu command is available only when you use the
SCALANCE W78x in the access point mode. You can specify the mode in the
System menu.
Avoiding Loops on Redundant Connections
The spanning tree algorithm allows network structures to be created in which there
are several connections between two stations. Spanning tree prevents loops being
formed in the network by allowing only one path and deactivating the other
(redundant) ports for data traffic. If there is an interruption, the data can be sent
over an alternative path. The functionality of the spanning tree algorithm is based
on the exchange of configuration and topology change frames.
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Definition of the Network Topology Using the Configuration Frames
Network components exchange configuration frames known as BPDUs (Bridge
Protocol Data Unit) with each other to calculate the topology. The root bridge is
selected and the network topology created using these frames. The root bridge is
the bridge that controls the spanning tree algorithm for all involved components.
BPDUs also bring about the status change of the bridge ports.
Rapid Spanning Tree
The rapid spanning tree algorithm is based on the spanning tree algorithm. This
was optimized in terms of the reconfiguration time. Typical reconfiguration times for
spanning tree are between 20 and 30 seconds. With rapid spanning tree, the
reconfiguration times are around 1 second. This was achieved by the following
measures:
●
Edge ports
A port defined as an edge port is activated after the hello time (the time
between two configuration frames). When the hello time has elapsed, the
station can be certain that no further configuration frame will arrive and that this
port is an edge port. If the user wants to avoid the hello time, spanning tree can
be disabled at this port.
●
Point to Point (direct communication between two neighboring stations)
By directly linking network components, a status change (reconfiguration of the
ports) can be made without any delays. A point-to-point connection can, for
example, be a WDS connection between two access points.
●
Alternate Port (substitute for the root port)
A substitute for the root port is configured. If the connection to the root bridge is
lost, the station can establish a connection over the alternate port without any
delay by reconfiguring.
●
Filter table
In rapid spanning tree, ports affected by a reconfiguration are immediately
deleted from the filter table. With spanning tree, on the other hand, the point at
which a port is deleted is decided by the time when the port was entered in the
filter table.
●
Reaction to events
Rapid spanning tree reacts to events, for example an aborted connection,
without delay. There is no waiting for timers as in spanning tree.
In principle, therefore with rapid spanning tree, alternatives for many parameters
are preconfigured and certain properties of the network structure taken into
account to reduce the reconfiguration time.
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(Rapid) Spanning Tree Configuration
The parameters used for the (Rapid) Spanning Tree protocol are displayed in the
(Rapid) Spanning Tree Properties menu.
If necessary, modify the following parameters to specify how the (rapid) spanning
tree algorithm operates:
Enable (R)STP Check Box
Select the Enable Spanning Tree check box if you want to use the (rapid)
spanning tree algorithm. If the check mark is not set, all ports are
automatically in the 'Forwarding' status.
Version list box
The version decides whether the Rapid Spanning Tree protocol (RSTP) is
used or whether the device is operated in compatibility mode of the
Spanning Tree protocol (STP).
Bridge Priority text box
The identification of the most efficient connection is always related to the
root bridge, a network component that can be considered as a root element
of a tree-like network structure. With the Bridge Priority parameter, you can
influence the selection of the root bridge.
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The bridge with the highest priority (in other words, with the lowest value for
this parameter) becomes the root bridge. If several network components in a
network have the same priority, the station whose MAC address has the
lowest numeric value will become the root bridge. Both parameters, bridge
priority and MAC address together form the Bridge Identifier. Since the root
bridge manages all path changes, it should be located as centrally as
possible due to the propagation time of the frames. The value for the bridge
priority is a whole multiple of 4096 with a range of values from 0 through
61440.
Max Age text box
Max Age is the time that a bridge waits for a configuration frame (BPDU).
When this time has elapsed, the bridge attempts to reconfigure the network.
The default for this parameter is 20 seconds.
Hello Time text box
Each bridge regularly sends configuration frames (BPDUs). The interval
between two such frames is the Hello Time. The default for this parameter is
2 seconds.
Forward Delay text box
New configuration data is not used immediately by a bridge but only after the
period specified in the Forward Delay parameter. This ensures that operation
is only started with the new topology after all the bridges have the required
information. The default for this parameter is 11 seconds.
Syntax of the Command Line Interface
CLI\BRIDGE\SPANNING>
Command
Description
Comment
info
Displays the current Spanning Tree
configuration.
spanning [E|D]
Enables (E) or disables (D) the (R)STP
algorithm.
version [R | S]
Specifies whether the Rapid Spanning
Tree (R) or Spanning Tree (S) mode is
used.
bridge [0 ... 61440]
This specifies the bridge priority for the
SCALANCE W:
Default value: 32768
hellotm [1 ... 10]
Specifies the interval between two
BPDUs in seconds.
Default value: 2 s
fwd_delay [4 ... 30]
Specifies the delay time for the
effectiveness of configuration
information (specified in seconds).
Default value: 11 s
maxage [6 ... 40]
Maximum age for configuration
information. (specified in seconds)
Default value: 20 s
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Spanning Tree Port Settings
Port-Specific Parameters
This page displays the current port parameters. The settings are made either using
the automatic function of the SCALANCE W or by the user.
The eight columns of the port table show the following information:
Port
Specifies the ports to which the information relates. Wireless 1_2, for
example, relates to the virtual access point VAP2 on the first WLAN
interface.
Priority
With this parameter, you specify the priority of the ports of a bridge.
If the path calculated by spanning tree is possible over several ports of a
station, the port with the highest priority (in other words the lowest value for
this parameter) is selected. A value from 0 through 255 can be specified for
the priority; the default is 128.
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STP Cost & RSTP Cost
These parameters are used to calculate the path that will be selected. The
lower the value, the greater the probability that the corresponding path will
be used. If several ports of a bridge have the same value, the port with the
lowest port number will be selected. Depending on whether STP or RSTP
was selected as the version, the value of STP Cost or RSTP Cost will be
used.
The calculation of the path cost is based mainly on the transmission rate.
The higher the achievable transmission rate, the lower the value for Path
Cost should be.
Typical path costs for Spanning Tree and Rapid Spanning Tree:
Data Rate
Path costs STP
Path costs RSTP
100 Mbps
19
200.000
54 Mbps
33
370.370
48 Mbps
36
416.667
36 Mbps
43
555.556
24 Mbps
53
833.333
18 Mbps
58
1.111.111
12 Mbps
83
1.666.667
11 Mbps
90
1.818.182
10 Mbps
100
2.000.000
9 Mbps
111
2.222.222
6 Mbps
166
3.333.333
5.5 Mbps
181
3.636.364
2 Mbps
500
10.000.000
1 Mbps
1000
20.000.000
The values can, however, also be sent individually.
Edge
The following entries are possible in this column:
yes
An edge port is connected to this port.
no
A spanning tree or rapid spanning tree device is connected to this port.
If an edge port is connected, a SCALANCE W can switch over the port more
quickly without taking into account spanning tree frames. If a spanning tree
frame is received despite this setting, the port automatically changes to the
no setting for further stations.
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Note
If clients with the layer 2 tunneling function enabled connect to the access point, a
separate port is opened for each of these clients. These ports cannot, however, be
configured for Rapid Spanning Tree. The settings (for example, priority and path
costs etc.) of the cell over which the client is connected to the access point are
adopted.
Example: An L2T client is connected to the access point over the WLAN1 VAP3
(Wireless 1_3) interface. The settings for WLAN1 VAP3 are: priority 128, path
costs for STP of 100, path costs for RSTP of 0 and the setting EdgePort enabled
(in other words, there is an end device on this port). These settings are adopted for
the L2T port with one exception.
The Edge-Port enabled setting is not adopted because layer 2 tunneling clients
and the ports downstream from the client can never be edge ports.
P.t.P.
There is a point-to-point link when two RSTP-compliant network components
are connected together over this port. There are three possible statuses :
ForceTrue
Even with half duplex, a direct link is assumed.
ForceFalse
Despite a full duplex connection, a point-to-point link is not assumed.
Auto
Point-to-point is detected automatically. If the port is set to half duplex
(shared media connection), a direct link is not assumed.
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Example: A WDS connection between access points is always a half duplex
connection. With the setting ForceTrue, a direct connection is assumed. With
Auto, a direct connection is not assumed.
Enabled
Shows whether spanning tree is enabled or disabled for the port.
Configuration of a Port for (Rapid) Spanning Tree
If you click on a port name in the first column, you open the (Rapid) Spanning Tree
Port Properties page:
STP enabled check box
Enable this check box, if you want the port to use the (rapid) spanning tree
protocol.
Priority text box
Here, enter a value between 0
and 255 for the port priority.
Admin Path Cost text box
Here, you can enter a value for the STP or RSTP Path Cost parameter. The
relevant value is then used depending on the selected version.
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If you enter a zero for the RSTP value, the value for the path costs is
calculated automatically.
Admin Edge Port check box
Enable this check box if an end device is connected to this port, otherwise a
reconfiguration of the network will be triggered by every link change.
Admin Point to Point Status check boxes
Here, there are three possible settings:
Shared media Connection is selected:
This corresponds to the entry ForceFalse in the port table.
Point to Point Connection is selected:
This corresponds to the entry ForceTrue in the port table.
Point to Point Connection and Shared Media Connection are not
selected:
This corresponds to the entry Auto in the port table.
Note
Point-to-point means a direct connection between two stations. A shared media
connection would, for example, be a connection from the Ethernet port to a hub or
a WDS connection between two access points.
Syntax of the Command Line Interface
CLI\BRIDGE\SPANNING\PORTS>
Command
Description
Comment
info
Displays the current Spanning Tree
configuration for all ports.
portstp <E|D> [ports]
Enables / disables the spanning tree
algorithm for the specified ports.
portprio <Port>
[0 ... 255]
Specifies the priority of the port.
Default value: 128
stp_cost <Port>
[1 ... 65535]
Specifies the path costs for the port
if Version is set to STP.
Default value: 100
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Command
Description
rstp_cost <Port>
[0 ... 200000000]
Specifies the path costs for the port
if Version is set to RSTP. If the value
is 0, the value is calculated.
edgeport <Port> [T|F]
Specifies whether or not an edge
port (T) or a station (F) that supports
spanning tree or rapid spanning tree
is attached to this port. if a (rapid)
spanning tree protocol is received,
the value F is displayed
automatically.
ptpport <port> <A|T|F>
The point-to-point link establishes a
direct link between two stations. In
this case, you have the following
options:
A
The port recognizes a PtP port
based on the duplexity. In full
duplex, a PtP link is assumed,
in half duplex no PtP link is
assumed (shared medium).
T
Specifies a PtP link, even
though half duplex is being
used.
F
Specifies that there is no PtP
link over the relevant port even
with full duplex.
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6.5.6
Storm Threshold Menu Command
Note
Storm Threshold is available in access point and in the client mode. The function
can only be used in client mode if NAT is disabled.
Limitation of Broadcast and Multicast Frames
Storm Threshold is the maximum number of broadcast or multicast frames per
second forwarded by the SCALANCE W78x. If this limit is exceeded, the
SCALANCE W78x stops processing such frames for 30 seconds.
Syntax of the Command Line Interface
CLI\BRIDGE\STORMTHR>
Command
Description
stormthr <E|D>
Enables / disables the storm
threshold function.
broadcast <limit value>
Specifies the maximum number of
broadcast packets per second from
the same address.
multicast <limit value>
Specifies the maximum number
multicast packets per second from
the same address.
broad_eth <limit value>
Specifies the maximum number of
broadcast packets per second for
the Ethernet interface.
multi_eth <limit value>
Specifies the maximum number of
multicast packets per second for the
Ethernet interface.
broad_1 <limit value>
broad_2 <limit value>
Specifies the maximum number of
broadcast packets per second for
the first or second wireless interface.
multi_1 <limit value>
multi_2 <limit value>
Specifies the maximum number of
multicast packets per second for the
first or second wireless interface.
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6.5.7
NAT Menu Command
Note
This menu command is available only with the following variants:
• SCALANCE W746-1PRO
• SCALANCE W747-1RR
• SCALANCE W78x (client mode only)
What is NAT?
With Network Address Translation (NAT), the IP address in a data packet is
replaced by another. NAT is normally used on a gateway between a private LAN
and an external network with globally valid IP addresses. A local IP address of the
internal LAN is changed to an external global IP address by a NAT device at the
gateway.
To translate the internal into the global IP address, the NAT device maintains a
translation list.
What is NAPT?
In Network Address Port Translation (NAPT) or Port Address Translation (PAT),
several internal source IP addresses are translated into the same external source
IP address. To identify the individual source nodes, the port of the source device is
also stored in the translation list of the NAT gateway and translated for the external
address.
If several local clients send a query to the same external destination IP address
over the NAT gateway, the gateway enters its own external source IP address in
the header of these forwarded frames. Since the forwarded frames have the same
global source IP address, the NAT gateway assigns the frames to the clients using
different port number.
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Note
NAT/NAPT is possible only on layer 3 of the ISO/OSI reference model. To use the
NAT function, the networks must use the IP protocol.
When using the ISO protocol that operates at layer 2, it is not possible to use NAT.
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NAT Properties of the SCALANCE Devices
When using the WLAN clients SCALANCE W746-1PRO, W747-1RR and W78x (in
client mode) as NAT gateways, the WLAN clients must be connected over the
Ethernet port with the local Ethernet devices.
The local IP address of the WLAN client on the Ethernet devices must be entered
as the gateway address.
The address assignment differs depending on the communication direction:
●
From Ethernet device to access point: Dynamic address assignment (NAT)
The continuous address assignment is made automatically.
●
From access point to Ethernet device: Static address assignment (NAPT)
The address assignment is fixed and must be set as a parameter.
32 entries can be set as NAT gateways per WLAN client.
Configuration
Set the configuration on the IP Network Address Translation page with the
following settings:
●
Enable NAT
Click the check box Enable if you want to enable NAT.
Caution: The change is adopted only after a restart!
●
Local IP
Here, you enter the local IP address for the Ethernet port of the WLAN client.
●
Subnet Mask
Enter a subnet mask for the local Ethernet network here, if applicable.
●
Del
Select the Delete check box if you want to delete the previous entries on this
page.
●
Sel
Select the Select check box if you want to enable the current entries.
●
Type
Here, you select the assignment TCP or UDP for the following global port. TCP
and UDP frames must have their parameters set separately.
●
Global Port
Enter the number of the global port (for TCP or UDP).
Note
If the port is already occupied by a local service (for example Telnet), a warning is
displayed. In this case, avoid using port 23 (Telnet) and port 80 (http: availability of
the client with the WBM) as global port.
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●
Local Address
Here, you enter the local address of the Ethernet device.
●
Local Port
Here, you enter the number of the local port of the Ethernet device.
Note
The following instructions apply only to the IP parameter assignment using the PST
tool.
When the module is accessed with PST by a configuration computer, the address
assignment differs depending on the interface:
• PST over the wireless interface:
The global address is changed.
• PST over the Ethernet interface:
The local address is changed.
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Syntax of the Command Line Interface
CLI\BRIDGE>nat
Command
Description
Comment
nat [E|D]
Enables/disables NAT
ip [IP address]
Sets the local IP address for the
Ethernet port
subnet [Subnet mask]
Sets the subnet mask for the
Ethernet port
static
Opens the "STATIC" menu
CLI\BRIDGE\NAT>subnet
Command
Description
Local Subnet mask :
255.255.255.0
Comment
value of the local subnet mask
CLI\BRIDGE\NAT>STATIC
Command
Description
add <type> <G port>
<L IP> <L port>
edit <Index> <E|D> [type]
port] [L IP]
[L port]
Comment
Add the static NAT entry:
type = TCP or UDP
G port = global port
L IP = local IP
L port = local port
[G
Edit the static NAT entry:
index = index in table
type = TCP or UDP
G port = global port
L IP = local IP
L port = local port
delete <Index>
Deletes a static NAT entry
clearall
Deletes all static NAT entries
CLI\BRIDGE\NAT\STATIC>info
Index
Enabled
Type
Global Port
Local IP
Local Port
1
x
TCP
21
172.27.138.2
1026
Example of static information
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6.5.8
IP Mapping Table Menu Command
Note
This menu command is available only with the following variants:
• SCALANCE W78x in client mode
• SCALANCE W746-1PRO
• SCALANCE W747-1RR
WLAN Access by Several Devices over a Client
With the devices listed in the first paragraph, you can provide access to the WLAN
for several devices with one client. This means that you do not need to equip every
device with its own wireless client.
This so-called IP mapping is possible only if the connected devices are addressed
only by IP frames. Communication at MAC address level (ISO/OSI layer 2) can
●
be established with one component whose MAC address is configured on the
client,
●
be established with a maximum of eight components if the layer 2 tunneling
function is selected.
The layer 2 tunneling setting meets the requirements of industrial applications in
which MAC address-based communication takes place with several devices
downstream from the client. Clients with this setting cannot connect to standard WiFi devices and access points with firmware V3.0 or older.
For further information, refer to Section 5.4.6.
MAC Mode
IP frames in the direction from the client to the access point always have the MAC
address of the WLAN interface as the source MAC address. As a result, the ARP
tables at the access point end always contain only the MAC address of the WLAN
interface of the clients.
If there are further devices downstream from the client, the Auto Find 'Adopt MAC'
option should not be enabled. In this case, the MAC address would be assigned
indiscriminately to the first device that signals over Ethernet.
If there is only IP communication between the access point and the client, the
default setting AdoptOwnMAC can be retained. If MAC address-based frames also
need to be sent by devices downstream from the client, you will need to select the
settings Adopt MAC manually, Autofind Adopt MAC or layer 2 tunneling.
For further information, refer to Section 5.4.6.
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MAC Address/IP Address Assignment
The client maintains a table with the assignment of MAC address and IP address to
be able to send incoming IP frames to the correct MAC address. The IP Mapping
Table menu command display this table. In principle, any number of device is can
be reached downstream from a client using IP. The client can manage up to eight
devices. When a new device is added, the oldest entry is deleted from the table to
make space is for the new entry. Since the data throughput of a wireless
connection cannot be increased indefinitely, a maximum of the devices should be
managed by one client.
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6.6
The Filters Menu
Note
The Filter menu and the corresponding menu commands are available only
available when you operate the SCALANCE W78x in the access point mode. You
can specify the mode in the System menu.
6.6.1
MAC Filter Menu Command
If the MAC filter is activated, communication with clients on the Ethernet side is
possible only when their source MAC addresses are entered in the table. As an
alternative, it is possible to make a setting in which access is denied for all
specified MAC addresses. You can enter a maximum of 50 MAC addresses in the
table.
With IP mapping of a SCALANCE W78x in client mode, only the MAC address
assigned to this device is relevant, the MAC addresses of the devices downstream
from it on the Ethernet side are irrelevant for filtering.
Syntax of the Command Line Interface
CLI\BRIDGE\ MAC1FLT>
Command
Description
fltmac1 <E|D>
Enables / disables the filter.
statmac1 [F|B]
If the value is set to F (forwarding),
only packets with a source address
contained in the table are forwarded.
In mode B (blocking), these packets
are blocked and all others are
forwarded.
add <MAC addr.>
[description]
Adds a new address to the filter list.
The optional description has no
influence on the list and simply
serves as information for the user.
edit <Number|MAC> [E|D]
[Description]
Changes the specified value.
delete <Number|MAC>
Deletes the entry from the list.
clearall
Deletes all entries from the list.
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6.6.2
MAC Dir Filter Menu Command
Restriction of the Data Traffic between MAC Addresses
It is possible to filter the data traffic intended for wireless clients linked to the
SCALANCE W78x access point. This filter is used to permit a specified MAC
address access only to other specified MAC addresses. You can specify several
source addresses or entries for one destination address. The communication of the
destination address is then restricted to these entries. If a destination address is
not entered in the filter, it is not subjected to any restrictions.
Syntax of the Command Line Interface
CLI\FILTERS\MAC2FLT>
Command
Description
fltmac2 <E|D>
Enables / disables the MAC filter.
add <SourceMAC> <DestMAC>
Adds a new entry with source and
destination address to the filter.
edit <Index> [E|D]
[SourceMAC]
[DestMAC]
Changes the entry specified by
Index. With [E|D], you can enable /
disable the entry.
delete <Index>
Deletes the entry at the specified
index position.
clearall
Deletes all entries for the MAC
filter.
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6.6.3
Protocol Filter Menu Command
Protocol Selection
Without protocol filtering, the SCALANCE W78x processes all data packets
regardless of the protocol being used. To increase data security and to reduce
load, it can nevertheless be useful to prevent communication using certain
protocols.
Here, you are not restricted to the protocols included in the list in this menu. If
necessary, you can add your own entries to this list. You can specify a maximum of
50 Ethernet II protocols for which filtering is required.
Syntax of the Command Line Interface
CLI\FILTERS\PROTO>
Command
Description
clearall
Deletes all entries for the protocol
filter.
statprot <F|B>
The selected protocols are
forwarded / not forwarded.
fltprot <E|D>
Enables / disables the protocol filter.
add <pattern>
[description]
Adds a new entry. A value in
hexadecimal is expected for the
Pattern value. The user can enter a
short note for this protocol as the
description.
edit <index> [E|D]
[pattern]
[description]
Changes of enables / disables the
filter entry.
delete <Index>
Deletes the filter entry.
clearall
Deletes all entries from the table.
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6.7
The I-Features Menu
Note
The I-Features menu and the corresponding menu commands are available only
available when you operate the SCALANCE W78x in access point mode. You can
specify the mode in the System menu.
6.7.1
iQoS Menu Command
Note
This function is not available in iPCF mode.
Client-Specific Bandwidth Reservation
iQoS (Quality of Service) is technique with which clients are assigned a certain
bandwidth. Due to this assignment, there is a high probability that data
transmission to these clients will be within a defined period. This technique can be
useful when response times must be guaranteed. If non-iQoS-clients put too much
load on the network, they can be logged off from the AP to guarantee data traffic
for iQoS clients.
Note
To ensure problem-free functioning of the iQoS mode, the number of clients with
bandwidth reservation is restricted to four.
Note
If the user reserves data for critical clients, this data rate also includes the frame
header (in other words, 802.11, MAC, IP, TCP, and S7 header). A SIMATIC user
must therefore take into account not only the net data during configuration but also
the headers.
Response Time
In the Response Time text box, you enter the required response time of the
SCALANCE W78x over the wireless interface. Remember that this value
represents the transmission time for the data from the SCALANCE W78x to the
client. The data transmission rate for nodes not included in the list is reduced
according the values specified.
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Syntax of the Command Line Interface
CLI\IFEATURES\IQOS\WLAN1>
or for the second wireless adapter (if it exists)
CLI\IFEATURES\IQOS\WLAN2>
Command
Description
iqos [E|D]
Enables / disables iQOS
functionality.
static [E|D]
Enables / disables the calculation of
the minimum transmission rate.
response [response time]
Specifies the response time for a
client with bandwidth reservation.
add <MAC> <Max_BW> <E|D>
Creating a critical client.
edit <index> <Max_BW>
<E|D>
Changes the setting of a client
delete <Index>
Deletes a critical client
clearall
Deletes all critical clients
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Comment
15 – 1000 ms, default
50 ms
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Configuration Using Web Based Management and the Command Line Interface
6.7.2
iPCF Menu Command
Note
The iPCF menu command is available for a SCALANCE W788-xRR or SCALANCE
W747-1RR and the IWLAN/PB Link.
Notice
With the SCALANCE W788-2RR, iPCF may only be enabled for one of the two
WLAN interfaces.
Restrictions of the 802.11 Standard
With wireless LAN complying with IEEE 802.11, the maximum data throughput
cannot be achieved in a cell when there is a higher number of nodes due to the
resulting collisions. A further restriction are the handover times that can be
achieved with 802.11 standard mechanisms. With normal commercially available
WLAN products, these are of the order of several hundred milliseconds.
New Possibilities with iPCF
In an industrial environment, there are applications that require a deterministic
response when there are large numbers of nodes and a high data throughput in a
cell. A deterministic behavior is also required when changing cells with handover
times of under 100 milliseconds.
To meet these requirements, the iPCF expansion (industrial Point Coordination
Function) was developed. iPCF is available with the following products:
●
SCALANCE W788-1RR and SCALANCE W788-2RR
●
SCALANCE W747-1RR
●
IWLAN/PB Link
iPCF ensures that the entire data traffic of a cell is ordered, controlled by the
access point. By avoiding collisions, the throughput can be optimized even with
large numbers of nodes. iPCF also allows fast cell changes.
Note
For PNIO communication, we always recommend that you enable the iPCF mode.
The signal strength must not fall below 60% or -65 dBm for reliable operation.
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How iPCF Works
The basic principle of iPCF is that the access point scans all nodes in the cell
cyclically. The same time, the scan includes the downlink traffic for this node. In the
reply, the node sends the uplink data. The access point scans a new node at the
latest every 5 ms.
The scan of a node can be seen by all other nodes in the cell. This allows a client
to detect the quality of the link to the access point even when it is not
communicating with the access point itself. If it does not receive a frame from the
access point for a certain time, it starts to search for a new access point.
In iPCF mode, both the search for a new access point and the registration with this
new access point have been optimized in terms of time. Handover times
significantly below 50 ms are achieved.
When should iPCF be used?
iPCF can be recommended in particular when a high data throughput is required
despite a large number of nodes or when extremely short handover times are
required.
With PNIO data traffic (ProfiNET IO), the iPCF mechanism was further optimized
by handling PNIO traffic with high priority.
What restrictions result from using iPCF?
The iPCF mechanism is a development of Siemens AG and the functions only with
nodes on which iPCF is implemented. With an access point with two WLAN
interfaces, it is, however, possible to set both iPCF and standard WLAN at the
same time. iPCF was optimized for the use of RCoax cable and the access point
and achieves optimum performance only with this configuration.
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Configuration
Select the iPCF Enabled check box to enable the iPCF mode.
With the SCALANCE W788-xRR models, you can also set optimized support of
PNIO if you select the PNIO support enabled check box. In this case, you must
also set the PNIO update time. The PNIO update time must match the configured
PNIO update time.
PNIO update times
When setting the update time, make sure that you note the following situations
otherwise there is a risk that you will not be able to establish stable communication:
Case a: Your system operates in a single cell; in other words the clients
(IWLAN/PB links, SCALANCE W74x) do not need to support roaming to another
cell.
In this case, update times >= 8 ms are supported.
Case b: Your system operates with two cells on two different channels.
In this case, update times >= 16 ms are supported.
Case c: Your system operates with several cells and with more than 2 channels
and the clients roam between cells.
In this case, the PN IO update time should be set higher than 16 ms.
Notice
We strongly advise that you check the local wireless characteristics prior to
commissioning.
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Configuration Using Web Based Management and the Command Line Interface
Syntax of the Command Line Interface
CLI\IFEATURES\IPCF\WLAN1>
or for the second wireless adapter (if it exists)
CLI\IFEATURES\IPCF\WLAN2>
Command
Description
Comment
ipcf [E|D]
Enables or disables iPCF mode.
pnio [E|D]
Enables or disables optimized PNIO
support.
Only on SCALANCE
W788-xRR models
(access point).
update [time]
Specifies the PNIO update time for
cyclic PNIO data exchange. This
value must match the configured
PNIO cycle time.
Only on SCALANCE
W788-xRR models
(access point).
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6.7.3
Forced Roaming on IP Down
Functional Description
Forced Roaming on IP down monitors the connection to a specific IP address
cyclically. This is achieved using ICMP packets (Echo Request/Reply or Ping). If
the IP connection aborts; in other words, no ping reply from the other end, a
deauthentication frame is sent to all WLAN clients. The relevant WLAN interface is
then disabled.
The IP connection continues to be monitored and the WLAN interface is enabled
again as soon as the access point has received a ping reply from the pinged
station.
The mechanism makes it possible, for example, to monitor a connection between
wireless clients and a server. If the server can no longer be reached over the
access point, the clients are deauthenticated and the WLAN interface of the access
point is disabled. The clients roam and then connect to a different access point
from which the server can be reached. As soon as the first access point can reach
the server again, it re-enables its WLAN interfaces.
Syntax of the Command Line Interface
CLI\IFEATURES\FORCED_ROAM\WLAN1>
or for the second wireless adapter (if it exists)
CLI\IFEATURES\FORCED_ROAM\WLAN2>
Command
Description
froam [E|D]
Enables of disables forced roaming
on IP down.
ip [IP address]
Monitors the connection to this IP
partner.
interval [100 - 5000]
Specifies the monitoring cycles to
the IP partner in milliseconds.
lostpkts [1 - 5]
Specifies the maximum number of
unanswered pings before the WLAN
interface is disabled.
Comment
Note
Forced roaming on IP Down cannot be used in conjunction with iPCF or WDS on
the same WLAN interface.
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6.7.4
Link Check Menu Command
Note
This function is not available in iPCF mode.
Device-Related Connection Monitoring
The Link Check function provides device-related connection monitoring for a
maximum of ten wireless nodes logged on at the SCALANCE W78x. This service
can be compared with the link on a wired connection. The function monitors
whether the node is available over the wireless medium. If no packet is received
from the node or sent successfully after half of the configured monitoring time, the
SCALANCE W78x attempts to send a test packet to the node.
Note
With the Link Check function, you can only monitor connections to WLAN clients;
use along with redundancy or WDS is not possible.
System Event for Connection Abort
You can specify how the SCALANCE W78x reacts to a connection abort (or to the
reestablishment of a connection) in the System > Events menu.
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Syntax of the Command Line Interface
CLI\IFEATURES\LINKCHECK>
Command
Description
linkchk [E|D]
Enable / disable device-related
connection monitoring.
add <MAC> [timeout]
Adds a new MAC address for
connection monitoring and specifies
the monitoring time. No time is
specified, the default is 500 ms.
edit <Index|MAC>
[timeout]
[E|D]
Modifies, enables, or disables an
entry.
delete <Index|MAC>
Deletes the specified entry from the
list.
clearall
Deletes all entries for connection
monitoring.
acknow [Index|all]
Displays or acknowledges (clears)
the Link Check messages requiring
acknowledgment.
Operating Instructions SCALANCE W78x
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Comment
The fault state remains
active until all the fault
messages have been
acknowledged. Default
status and the LED are
cleared if the reason for
default status was only a
link check error message.
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6.7.5
Redundancy Menu Command
Note
The redundancy function described here is available only with SCALANCE W78x
models that have two wireless adapters available (SCALANCE W788-2PRO and
SCALANCE W788-2RR) and that are not operating in iPCF mode.
You can only use the encryption schemes WEP and AES.
Redundant Connection between two SCALANCE W788-2xx Devices
Note
With the firmware update to ≥ V3.0, the SCALANCE W78x-xRR devices need to be
reconfigured if you use WDS or redundancy and use the MAC address and not the
system name (sysName).
These functions are then based on the MAC address that changed with the
introduction of VAPs with V3.0.
Two SCALANCE W78x devices each with two wireless interfaces can be
configured so that there is a redundant wireless connection. The redundancy
function causes an automatic failover to the second wireless interface is no data
transfer is possible on the first wireless interface. The user is informed of the status
of the redundant connection with the statuses not connected, connected, or error
(communication error).
Instead of the MAC addresses, you can also configured the redundant partners
with the sysName parameter. Beacons contain this parameter which is why the
redundant device is detected using beacons.
Note
If 802.1x or WPA is used, a private key must be selected for the redundant
connection.
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Syntax of the Command Line Interface
CLI\IFEATURES\REDUNDANCY>
Command
Description
redun [E|D]
Enables / disables the redundancy
function
wep [E|D]
Enables / disables encryption.
mac1 <MAC address>
Specifies the device that will be
operated redundantly along with the
first wireless adapter.
mac2 <MAC address>
Specifies the device that will be
operated redundantly along with the
second wireless adapter.
name [system name]
Instead of the MAC addresses, you
can also specify the sysName of the
device.
wepkey1 [key index]
Specifies the WEP key of the device
that will be operated redundantly
along with the first wireless adapter.
wepkey2 [key index]
Specifies the WEP key of the device
that will be operated redundantly
along with the second wireless
adapter.
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6.7.6
IP-Alive Menu Command
Application-Related Connection Monitoring
The IP-Alive function provides application-related connection monitoring of the
wireless link.
It is useful to use IP-Alive on IP connections when it is known that they are used to
send data cyclically. With IP-Alive, you specify a monitoring time for an IP address
and a port. If you do not want to monitor a particular port but rather only the data
traffic from a particular IP address, simply enter 0 in Port. This resets the
monitoring with each frame from this IP address.
In contrast to the Link Check, the SCALANCE W78x does not start any checks until
the monitoring time has elapsed. The SCALANCE W78x checks passively whether
communication took place during the specified monitoring period. As with Link
Check, you can also enter up to ten connections here.
System Event for Connection Abort
You can specify how the SCALANCE W78x reacts to change in the IP-Alive status
in the System > Events menu.
Note
The IP-Alive function is not available in iPCF mode.
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Syntax of the Command Line Interface
CLI\IFEATURES\IP_ALIVE>
Command
Description
ipalive <E|D>
Enables / disables applicationrelated connection monitoring.
add <E|D> <IP address>
<:Port> <Timeout>
Adds a new IP address to the
connection monitoring and enables
/ disables monitoring for this IP
address.
edit <index|IP addr.>
[:port] [E|D]
[timeout]
Modifies, enables, or disables the
entry specified by the index or IP
address.
delete <Index|IP addr.>
Deletes the node to be monitored.
clearall
Deletes all entries for connection
monitoring.
acknow [Index|all]
Displays or acknowledges (clears)
the IP Alive messages requiring
acknowledgment.
Operating Instructions SCALANCE W78x
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Comment
The fault state remains
active until all the fault
messages have been
acknowledged. The fault
state and the Fault LED
are cleared if the only
reason was an IP Alive
error message. The
command is not visible in
the client mode.
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6.8
The Information Menu
System Events and Information on the Protocols
The pages of this menu display tables contain information on system events and
on the behavior of the protocols (IP, TCP, UDP, and ICMP, SNMP).
Updating the Display
Most pages have the Refresh button at the bottom edge with which you can update
the display. The Client List menu command also allows you to update
automatically. To activate this, select the Update check box.
Syntax of the Command Line Interface
CLI\ ... >
Command
info
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Description
Displays information on the current
menu item.
Comment
This can be called in
every submenu.
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6.8.1
Log Table Menu Command
Logging System Events
This page lists system events and the time at which they occurred. You can specify
which events are included here in the System > Events menu.
If you position the mouse pointer over a time value, the system time and date are
displayed.
Syntax of the Command Line Interface
CLI\INFORM\LOG>
Command
Description
events <show | clear>
Displays or deletes the log table.
addevent <Text>
Adds an event to the log table.
eventmax [Max count]
Sets the maximum number of log
entries.
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Comment
The default is 400.
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Configuration Using Web Based Management and the Command Line Interface
6.8.2
Auth Log Menu Command
Logging Authentication
The pages of this menu contain a table with information on successful or failed
authentication attempts.
Syntax of the Command Line Interface
CLI\INFORM\LOG>
Command
Description
show [0...8]
Displays the authentication entries.
By specifying a parameter, the
display can be limited to specific
information:
0 All
1 Good
2 All errors
3 802.11 errors
4 ACL errors
5 RADIUS errors
(request denied, password
denied etc.)
6 802.1x errors
(timeout, no response from
RADIUS or WPA server)
7 Deauthenticated errors
8 Deassociated errors
clear
Deletes all entries.
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6.8.3
Versions Menu Command
Current Versions and Order Numbers
1. Hardware version
2. Order number (MLFB)
3. Boot software version
4. Firmware version
5. Ethernet MAC address
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6.8.4
Client List Menu Command
Note
This menu command is available only in the access point mode.
Logged on Clients
All the clients logged on at the SCALANCE W78x along with certain additional
information (wireless channel, status etc.) are displayed here.
MAC address
The MAC address of the client.
If#
This specifies the wireless interface over which the client is connected.
Signal
The signal strength of the client. The higher the value, the better the signal. The
user can choose between percentage and dBm.
Age
Displays the time that has elapsed since the last client activity was detected.
Sec
This indicates which encryption is active.
Channel.
The current channel over which the client communicates with the SCALANCE
W78x.
State
The current state of the clients. Associated means that the client is logged on.
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By selecting the Update check box, the list is updated automatically every 2
seconds. If you click on the MAC address of a client, you will receive additional
information on this client.
Syntax of the Command Line Interface
CLI\INFORM\WLAN1>
CLI\INFORM\WLAN2>
Command
Description
Station
Displays information on the
connected stations.
resetStats
Resets the statistics that are
displayed with the Station command.
Apinfo
Displays information on the access
point.
Scan
Displays all the access points in the
area.
Noise
Shows disturbances on the
individual channels.
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Comment
(only in access point
mode)
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6.8.5
Ethernet Menu Command
Information on the Ethernet Interfaces
This menu command provides information on the current settings of the Ethernet
interface. The current operating data is also displayed here.
Syntax of the Command Line Interface
There are no CLI commands for this menu command.
6.8.6
WLAN Menu Command
Information on the WLAN Interface
This menu command provides information on the current settings of the WLAN
interface. The current operating data is also displayed here. With the SCALANCE
W788-2PRO and SCALANCE W788-2RR models, there are two menu commands
WLAN1 and WLAN2.
Traffic
Statistics of the data to be transmitted are displayed here.
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● Association / Authentication Frames
The frames relevant for registration are counted. A distinction is made between
the registration frames Association and Authentication and the deregistration
frames Disassociation and Deauthentication.
●
Signal strength
The signal strength is displayed as an average of the last received frames or at
the sending end of the last received Acknowledge frames.
● Frame count
Counter for all successfully received or sent frames.
● Management frames
Counts all received or sent management frames.
● RTS frames
Is incremented when a CTS frame is received in response to an RTS frame.
● Rate
Displays an average data rate of the most recently received or sent data
frames.
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● Data frame count
Counts all received or sent data packets.
● Data bytes count
Displays the sum of all received or sent bytes in a data frame.
● Unicast
Sum of all received or sent data unicasts.
● Multicast
Sum of all received or sent data multicasts.
● Broadcast
Sum of all received or sent data broadcasts.
Errors
This page displays statistics of the transmission errors that have occurred. A high
error rate indicates a bad connection.
Receive Errors:
● ACL discarded frames
Displays all client registration attempts that were blocked by the Access Control
List.
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● Fragmentation errors
Sum of all failed fragmentations. One of the fragments was not received or
received too late.
● Encryption errors
Is incremented if a frame is received in which the WEP bit is set and the device
operates without encryption, or the reverse situation when a packet is received
without a WEP bit and encryption is enabled.
● Duplicate frames
Sum of all frames received twice.
● FCS errors
Sum of all packets received in which the checksum was incorrect.
● Header CRC error
Sum of all packets received in which the header checksum was incorrect.
● Decrypt CRC error
Sum of all packets received in which the checksum of the encrypted data buffer
was incorrect.
Transmit Errors
● Transmission errors
Is incremented when a frame cannot be sent successfully despite hardware
retries.
● Dropped frames
Number of packages that were dropped either when the packet was not sent
despite all retries or packets that had not been sent when a node deregistered.
● Acknowledged errors
Sum of all packets sent that were not confirmed by an acknowledge.
● RTS errors
Sum of all sent RTS frames that were not acknowledged by a CTS.
● Retry count
Sum of all frames sent successfully that required one or more retries.
● One retry count
Sum of all frames sent successfully that required exactly one retry.
● Multiple retry count
Sum of all frames sent successfully that required more than one retry.
Note
The percentages shown following the errors relate to the entire received/sent
frames.
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Overlap AP
Note
This menu command is available only in the access point mode.
For optimum data throughput, it is important that the set wireless channel is not
used by other access points. In the 2.4 GHz band (802.11b or 802.11g), there is
overlapping of the wireless channels so that an access point occupies not only the
set channel but also the two or three adjacent channels. You should therefore
make sure that there is adequate channel spacing to neighboring access points.
The Overlap AP page shows all access points that are visible on the set or
adjacent channels (at 2.4 GHz). If entries exist here, the maximum data throughput
of the access point will be restricted.
Type
Shows the type of connection. The types AP (infrastructure mode) and AdHoc
exist.
MAC address
The MAC address of the wireless devices.
Channel
The channel on which the found wireless device transmits.
Signal
Shows the signal strength with which the other wireless devices are received at the
AP. The stronger the signal, the greater the probability that they interfere with each
other. There is also the possibility that they interfere with each other even at low
signal strengths.
Age
Shows when the last activity was detected by the wireless device.
SSID
Shows the SSID of the other wireless device.
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Syntax of the Command Line Interface
CLI\INFORM\WLAN1>
or for the second wireless adapter (if it exists)
CLI\INFORM\WLAN2>
Command
Description
overlap
Shows the access points on the set
or adjacent channels.
over_age [1..7200]
Changes the aging interval (in
minutes) for the list of neighboring
access points. If an AP is inactive for
longer than the time set here, it is
removed from the list.
Comment
VLAN
This page displays information on the configured virtual LANs with the following
information on each virtual access point (VAP):
●
Port Name
The configured port name. Here, you see a list of the configured virtual access
points (VAP), the WDS connections and the management and the redundancy
VLAN if applicable.
●
VLAN
The status of the relevant VLAN (E = enabled, D = disabled)
●
VLAN ID
The configured VLAN ID
●
SSID
The SSID of the relevant VLAN
●
Member
Shows the virtual access point (VAP) as member of other VLANs:
all = VAP is member of all VLANs
only = VAP is member of only certain VLANs
●
Priority
The configured frame prioritization
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6.8.7
iQoS Menu Command
Information on Bandwidth Reservation
The pages of this menu provide information on iQoS. The clients are grouped as
follows:
Critical Compliant (CC)
This involves clients that were defined as critical and that are currently meeting the
requirements you set for the bandwidth and response time.
Critical Non-Compliant (CNC)
The CNC clients are also clients with strict requirements regarding the response
time and bandwidth. In contrast to the CC clients, however, these clients are not
currently meeting these requirements.
Non-Critical Satisfied (NCS)
These clients do not have fixed requirements regarding the response time and
minimum bandwidth. Their communication is not currently restricted by iQoS.
Non-Critical Regulated (NCR)
These clients are also non-critical clients whose communication is, however,
currently being restricted by iQoS in favor of critical clients.
Non-Critical Non-Responsive (NCNR)
Some clients that require no acknowledgment whatsoever for their communication
(for example UDP traffic) cannot be regulated by iQoS. These are classified as
NCNR.
Syntax of the Command Line Interface
CLI\IFEATURES\IQOS\WLAN1>
or for the second wireless adapter (if it exists)
CLI\IFEATURES\IQOS\WLAN2>
Command
info
Description
Comment
Displays information on iQos.
The CLI also supplies detailed information on iQoS. In this view, the first part
displays the current configuration, in other words whether iQoS is enabled, ,
whether the calculations and reservations are based on the static worst-case
assumptions (static = enabled) or the current situation (static = disabled). The
number of configured critical clients is also displayed.
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Configuration Using Web Based Management and the Command Line Interface
The Traffic statistics table shows how many clients are currently in each status and
how many packets of a particular class were sent for each of these classes.
The Associated Clients table provides an overview of all clients, their current
classification, and the volume of sent and receive data. The shaper interval (SI) is
also is displayed for each client. The shaper interval is the minimum spacing
between two packets of a client set by iQoS. For NCS clients, the SI is selected so
that their bandwidth is twice the size of the current bandwidth.
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Configuration Using Web Based Management and the Command Line Interface
6.8.8
Spanning Tree Menu Command
Status of the Spanning Tree Protocol
The upper part of the page shows the RootID and the BridgeID. Both IDs are made
up of their priority and their MAC address. Together, this results in the 16 character
long ID. The RootID is the ID of the bridge that is currently the root bridge. The
BridgeID shows the ID of the local device.
Below this, you can see values for the Topology Change event. The first value is a
counter indicating how often the tree structure has changed since restarting. The
value beside this, shows the time since the last switchover event.
Below this, you will see the following port-related information:
Port Name
Plain language name of the port, for example Ethernet or WLAN1 WDS1.
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Configuration Using Web Based Management and the Command Line Interface
Enabled
Indicates whether the (R)STP is enabled for this port. If the port is not enabled, no
further frames are forwarded over this port.
Cost
Indicates the path costs for the port.
Priority
Indicates the current priority of the port.
Edge
Shows whether or not the port is an edge port.
P.t.P.
Shows whether or not the AP is connected directly to another (R)STP device
Port State
With STP, a port can adopt three states:
●
Discarding
No frames are forwarded from or to this port. The port has been disable by the
user or the protocol (for example, when a redundant path has been detected).
●
Learning
The port receives packets in the same way as in listening mode, but does not
forward them. The MAC addresses are also entered in the Learning Bridge.
●
Forwarding
The port is fully enabled. Frames can be received and sent.
●
Disabled
The port is not currently in use.
State
Here, the state of the port in relation to the root bridge is displayed. The ROOT
state means that the port is connected directly with the root bridge. DESIGNATED
identifies all ports that are not directly at the root but that are enabled. Ports that
are blocked are in the BLOCKED state.
Syntax of the Command Line Interface
The Command Line Interface contains the information on the Spanning Tree
protocol in CLI\INFORM\Spanning.
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Configuration Using Web Based Management and the Command Line Interface
6.8.9
IP, TCP/IP, ICMP, SNMP Menu Command
Information on Protocols
The pages of this menu show information on the IP, TCP, UDP, ICMP, and SNMP
protocols in the form of tables.
There are no CLI commands for this menu command.
6.8.10 Signal Recorder Menu Command
Note
The signal recorder is available only in client mode.
Signal Strength Indicators
The Signal Recorder can record or display the signal strength of the connected
access point. Using this data, you can locate areas with an inadequate signal
strength. The Signal Recorder can be particularly advantageous when the client
moves along a fixed path (for example suspension track).
Using the URL
http://<IP address>/Signal.txt
or the URL
http://<IP address>/Signal.log
you can download the generated Signal file. If you are not yet logged in, this opens
the login window in which you must log in with the Admin login.
Displaying the Instantaneous Value
The upper half of the window contains an instrument for displaying the graphic
representation of the currently calculated dBm value in real time. Depending on
your browser and the network load, the display is updated approximately every 500
ms. Apart from the graphic display, the current dBm value is also displayed in plain
language. The MAC address of the AP with which the ECM is currently connected
along with the frequency, channel and transmission rate are also displayed and
updated. You can start or stop the graphic display with the "Start display" and
"Stop display" buttons.
Note
Working with the graphic display can cause a not insignificant network load that
can disturb time- and throughput-critical processes (iPCF, PNIO).
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Configuration Using Web Based Management and the Command Line Interface
Recording a Series of Measurements
The lower half of the window includes not only the operator controls for graphic
display of the instantaneous value but also the controls for the actual signal
recorder. You can set the interval between the acquisition of two measuring points
as well as the total number of measuring points. The recorder is controlled by the
"Start recording" and "Stop recording" buttons.
As soon as measuring points have been recorded successfully and the recorder
has been stopped, the "Save recorder file" and "Display recorder file" buttons are
enabled. With the "Save" button, the measured values can be loaded directly from
the ECM as a file in CSV format and imported into a suitable evaluation program.
The CSV file contains the MAC address of the AP for every measuring point, the
current number of the measurement, the raw value of the RSSI, the dBm value and
its corresponding percentage value, a roaming indicator, the channel and the
transmission rate.
The "Display record file" button opens a pop-up window in which the measured
values over time is already available in graphic form. The dBm values are shown
over time. If the ECM roams during the measurement, blue bars indicate the event.
If you move the mouse pointer over such a bar or over the flag at the top of the bar,
a tooltip with the MAC addresses of the two access points appears.
With the "Print graph" button, it is easy to print the table. You will, however, need to
make certain settings in the browser.
●
Mozilla Firefox 1.5:
In the "File" => "Page setup..." dialog, make sure that the "Print Background
(colors & images) check box is enabled in the "Options" group box.
●
Microsoft Internet Explorer 6.0:
In "Tools" => "Internet Options" => "Advanced", the "Print background colors
and images" check box must be enabled under "Printing".
The signal recorder itself does not cause any significant load in the network that
could affect other processes.
Both parts of the signal recorder can be operated independently.
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Configuration Using Web Based Management and the Command Line Interface
Below, you will find a few tips that will help you to obtain useful measurements with
the signal recorder:
●
Use a fixed data rate in the configuration.
●
Where possible, the ipcf mode with as low an update time as possible should
be set for the measurements.
●
Make sure that there is enough data communication during the measurement
because the statistics functions evaluate incoming frames.
●
The measurement setup should be run through 2-3 times with the same
parameters to find out whether losses of signal strength always occur at the
same position.
●
Selective measurements at a fixed position should be made over a certain
time.
Figure 6-3
Screen Display of the Measured Values
Operating Instructions SCALANCE W78x
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Configuration Using Web Based Management and the Command Line Interface
Roaming indicator
This value appears when the client connects to another or to no AP and the MAC
address of the AP changes as a result.
Bandwidth/data rate
The bandwidth/data rate is not displayed over the entire screen since it could
overlap the signal level.
Noise floor
The noise floor represents the lower end of the technically possible transmission of
the device. This means that when the noise floor is exceeded (the useful signal is
louder than the noise floor), this is where the system dynamics begins. For this
reason, this level is visible only when the client has no connection to an AP
(indicated in the figure above by the MAC address 00-00-00-00-00-00).
Legend
BW bandwidth in Mbps
RSS received signal strength in dBm
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Configuration Using Web Based Management and the Command Line Interface
Figure 6-4
Comparison of the Measured Value Display as a Percentage and in dBm
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Configuration Using Web Based Management and the Command Line Interface
Syntax of the Command Line Interface
CLI\INFORM\SIGNAL>
Command
Description
Comment
recstart <interval>
[quantity recording points]
Starts signal recording.
The interval at which the current
signal is recorded can be between 1
and 1000 milliseconds.
A value between 1 and 20000 is
possible for the number of recording
points.
This command is only
available in the client
mode.
recstop
Stops signal recording prematurely.
This command is only
available in the client
mode.
dispstart [interval]
Displays the current signal strength
cyclically on the CLI.
The interval can be between 100
and 10000 milliseconds
This command is only
available in the client
mode.
dispstop
Stars cyclic output of the signal
strength.
This command is only
available in the client
mode.
exit
Closes the CLI/TELNET connection.
This command is only
available in client mode
info
Displays the parameters of the
signal recorder
This command is only
available in client mode
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Technical Specifications / Approvals
7
Data Transmission
Transmission rate for Ethernet
10/100 Mbps
Transmission rate for wireless
1 ... 54 Mbps (108 Mbps)
Supported standards for wireless
802.1x, 802.11a, 802.11b, 802.11g,
802.11h, 802.11i
Supported standards for energy
supply
802.3 af (Power over Ethernet)
Interfaces
Energy
•
Data
IE IP 67 hybrid plug-in connection
R-SMA antenna sockets
(2 x or 4 x with the 7882pro)
M12 connector
(18 to 32 V DC)
• Power contacts in the hybrid connector
(18 to 32 V DC)
• RJ-45 jack power-over-Ethernet
(48 V DC)
2 DC 24V power supplies
(18 to 32 V DC) safety extra-low voltage
(SELV).
Power supply voltage connected over high
resistance with housing (not electrically
isolated).
Electrical Data
Power consumption
< 10 W
Construction
Dimensions without antennas
(W x H x L)
125 mm x 88 mm x 108 mm
Weight
approx. 1050 g
Permitted ambient conditions
Operating temperature
-20°C ... 60°C
Transport and storage
temperature
-40°C ... 70°C
Degree of protection
Tested to IP65
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Technical Specifications / Approvals
MTBF Information (mean time between failure)
Device type
MTBF
SCALANCE W78x
67 years
Drilling diagram for wall mounting
1 2 5
1 1 5
9 0
8 0
5
5
4
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Technical Specifications / Approvals
Technical Specifications ANT795-4MR
Mechanical Properties
Connector
R-SMA male for connection to
SCALANCE W78x or
SCALANCE W74x
Cover material
Polycarbonate
Silicone-free
Electrical Properties
Frequency range
2.4 ~ 2.4835 GHz
5.15 ~ 5.35 GHz
5.725 ~ 5.85 GHz
Impedance
50 Ohms
Voltage standing wave ratio
≤ 2,0
Return loss
≤ -10 dB
Gain at 2.45 GHz
3 dBi
Gain at 5.25 GHz
5 dBi
Polarization
Vertical
Operating temperature
- 20 °C.... + 60 °C
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Technical Specifications / Approvals
Dimension Drawing
6
1 4 8
2 1 ,2
3 4 ,6
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251
Approvals
CE Conformity
The products
SIMATIC NET SCALANCE W788-1PRO
SIMATIC NET SCALANCE W788-2PRO
SIMATIC NET SCALANCE W788-1RR
SIMATIC NET SCALANCE W788-2RR
in the version put into circulation by Siemens A&D conform to the
regulations of the following European directive:
99/5/EC
Directive of the European Parliament and of the Council relating to
Radio Equipment and Telecommunications Terminal Equipment and
the Mutual Recognition of their Conformity.
Conformity with the essential requirements of the directive is attested
by adherence to the following standards:
EN 60950
Safety of Information Technology Equipment
EN 301 489-1
Electromagnetic Compatibility for Radio Equipment and Services
EN 301 489-17
Specific Conditions for Wideband Transmission Systems and HighPerformance Radio Local Area Network (HIPERLAN) Equipment
EN 300 328
Electromagnetic Compatibility and Radio Spectrum Matters
EN 301 893
Broadband Radio Access Networks (BRAN) - 5-GHz highperformance RLAN
EN 50371
Generic standard to demonstrate the compliance of low power
electronic and electrical apparatus with the basic restrictions related
to human exposure to electromagnetic fields (10 MHz to 300 GHz)
1999/519/EC
Council recommendation on the limitation of exposure of the general
public to electromagnetic fields (0 Hz to 300 GHz)
Devices connected to the system must meet the relevant safety
regulations.
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Approvals
The EU declaration of conformity is available for the responsible
authorities according to the above-mentioned EU directive at the
following address:
Siemens Aktiengesellschaft
Automation and Drives
Industrielle Kommunikation
Postfach 4848
D-90327 Nürnberg
This declaration certifies compliance with the directives named
above, but does not guarantee any specific properties.
Operating Instructions SCALANCE W78x
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Approvals
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Approvals
ATEX, cULus and FM Approvals
The products
SIMATIC NET SCALANCE W788-1PRO
SIMATIC NET SCALANCE W788-2PRO
SIMATIC NET SCALANCE W788-1RR
SIMATIC NET SCALANCE W788-2RR
has the following approvals
• EN50021
• UL 60950-1
• FM Hazardous (Classified) Location Electrical Equipment:
Non Incendive / Class I / Division 2 / Groups A,B,C,D / T* and
Non Incendive / Class I / Zone 2 / Group IIC / T*
(T* = For concrete information on the temperature class, refer to the type plate)
!
Warning
When used under hazardous conditions (Zone 2), the SCALANCE W78x product
must be installed in an enclosure. To comply with EN 50021, this enclosure must
meet the requirements of at least IP 54 in compliance with EN 60529.
DO NOT CONNECT OR DISCONNECT EQUIPMENT UNLESS AREA IS KNOWN
TO BE NONHAZARDOUS.
Note
The specified approvals apply only when the corresponding mark is printed on the
product.
Operating Instructions SCALANCE W78x
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Approvals
FCC Approval
This device complies with Part 15 of the FCC Rules and with RSS-210 of Industry
Canada.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
Notice
Changes or modifications made to this equipment not expressly approved by
SIEMENS may void the FCC authorization to operate this equipment.
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the following measures:
●
Reorient or relocate the receiving antenna.
●
Increase the separation between the equipment and receiver.
●
Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
Notice
FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment. This equipment should be installed and operated with
minimum distance 20 cm between the radiator and your body.
This transmitter must not be co-located or operating in conjunction with any other
antenna or transmitter.
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Appendix
Private MIB Variables of the SCALANCE W78x
Downloading the MIB of the SCALANCE W78x over the Internet Explorer
Using the URL http://<IP_address>/snScalanceW.mib, you display the login
window if you are not yet logged on. After logging on, the private MIB file of the
SCALANCE W is available. When you save on your PC, the source text view
should be enabled.
OID
The private MIB variables of the SCALANCE W78x have the following object
identifiers:
iso(1).org(3).dod(6).internet(1).private(4).
enterprises(1).ad(4196).adProductMibs(1).simaticNet(1).
iScalanceW(4)
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Appendix
Variables
The following table shows the private MIB variables of the SCALANCE W78x:
Name
snDownload
OID
1.3.6.1.4.1.4196.1.1.4.100.1.5
Description
Download information and
control variables for image,
configuration file, events
table.
Number of
Objects
17
snNvLog
1.3.6.1.4.1.4196.1.1.4.100.1.6
Log for events.
8
snTrapInfo
1.3.6.1.4.1.4196.1.1.4.100.1.7
Information on traps.
6
snGen
1.3.6.1.4.1.4196.1.1.4.100.1.8
General information, not
conforming with MIB-2.
23
snTcpip
1.3.6.1.4.1.4196.1.1.4.100.1.10
IP address, Subnet mask,
Default gateway, DHCP
status…
5
snScalanceWCommon
1.3.6.1.4.1.4196.1.1.4.100.2.1
SCALANCE W - specific
settings.
24
snScalanceWFilter
1.3.6.1.4.1.4196.1.1.4.100.2.4
Protocol filters and storm
threshold settings
18
snScalanceWStats
1.3.6.1.4.1.4196.1.1.4.100.2.5
Information on WLAN 1 and
WLAN 2 interfaces.
62
snScalanceWDevices
1.3.6.1.4.1.4196.1.1.4.100.2.6
AP mode: List and
information on all clients
currently "associated“ or
connected.
Client mode: List of devices
with which the client is
currently connected.
49
snScalanceWScan
1.3.6.1.4.1.4196.1.1.4.100.2.7
Client mode: List of
reachable WLANs and
information whether the
clients can connect to them.
11
snScalanceWAcl
1.3.6.1.4.1.4196.1.1.4.100.2.8
information and settings for
the Access Control Lists.
9
snScalanceWAccess
1.3.6.1.4.1.4196.1.1.4.100.2.9
List of IP addresses that can
access the management
interface.
5
snScalanceWVirtualAp
1.3.6.1.4.1.4196.1.1.4.100.2.10
Information on the currently
configured virtual APs.
17
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Appendix
Traps
Name
Specific
Index
Variable
snScalanceWPowerLi
neDown
31
snScalanceWChangedPowerLin
e - The power line where the
last power down occurred. 1M12, 2-Ethernet Power
This is generated if there is a
power down on M12 or the
Ethernet power connector.
snScalanceWPowerLi
neUp
32
snScalanceWChangedPowerLin
e - The power line where the
last power up occurred. 1-M12,
2-Ethernet Power
This is generated if there is a
power up on M12 or the
Ethernet power connector.
snScalanceWFault
41
snScalanceWFaultValue Fault value:
0 = no fault,
bit 0 = power M12 is off,
bit 1 = link down,
bit 2 = internal error,
bit 23 = Link Check error,
bit 24 = IP Alive broken,
bit 25 = power ethernet is off,
bit 26 = Cold/warm start,
bit 27 = C-PLUG error,
bit 28 = iQoS error,
bit 29 = Redundancy error"
This is generated if the
snScalanceWFaultValue
variable is changed.
The bit is set to "1" according to
the event that has occurred.
snScalanceWIQOS
51
snScalanceWIQOSValue Description of the last
snScalanceWIQOS trap
snScalanceWLinkChe
ckOff
81
snScalanceWLinkCheckValue Description of the last
snScalanceWLinkCheckOff
Trap
This is generated if a timeout
occurs with a client monitored
with Link Check.
snScalanceWLinkInte
grityOn
82
snScalanceWLinkCheckValue Description of the last
snScalanceWLinkCheckOn trap
This is generated if a client
monitored with Link Check logs
on again at the AP following a
timeout.
snScalanceWClientAu
thenticated
85
SnScalanceWClientsIndex - An
index of the client in the
snScalanceWClients table
This is generated when a client
logs on at the AP.
snScalanceWClientDe
Authenticated
86
SnScalanceWClientsIndex - An
index of the client in the
snScalanceWClients table
This is generated when a client
logs off from the AP.
snScalanceWRedund
ancy
53
SnScalanceWRedundancyValu
e- Description of the last
redundancy trap.
SnScalanceWRedundancyState
- Status of redundancy
connection
This is generated if the status of
the redundant connection
changes, for example when the
connection of wireless interface
A aborts.
snScalanceWOverlap
AP
101
snScalanceWOverlapAPValue
- Description of the last
OverlapAP trap.
Is generated when an access
point is detected on the device's
own or an overlapping wireless
channel.
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259
Appendix
snScalanceWiPCFPNI
OmaxSTAs
111
snScalanceWPNIOValue Description of the last
snScalanceWiPCFPNIOmaxST
As or
snScalanceWiPCFPNIOCycleTi
me trap
Is generated when there are too
many clients registered for the
specified update time in iPCF
mode with PNIO support.
snScalanceWiPCFPNI
OCycleTime
112
snScalanceWPNIOValue Description of the last
snScalanceWiPCFPNIOmaxST
As or
snScalanceWiPCFPNIOCycleTi
me trap
Is generated when the specified
update time in iPCF mode with
PNIO support cannot be kept to.
snScalanceWForcedR
oamingVapStateChan
ged
121
snScalanceWVirtualApIndex
- Index of the VAP
snScalanceWVirtualApState
- Current State of the VAP
unknown (0)
authenticated (1)
associated (2)
powersafe (3)
adhoc (4)
joined (5)
vap-is-up (6)
vap-starting (7)
vap-is-down (8)
locked (9)
vap-connected (10)
Generated when the status of
the VAP changes.
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Appendix
Designing and Calculating Wireless Systems Based on the
Example of RCoax
Calculating in Decibels
Decibels as a Logarithmic Unit of Measure
In wireless technology, most calculations are made in decibels (dB). Decibel
means the logarithm of a ratio. Formulated mathematically, this can be shown by
the following equation:
Decibel value = 10 * log (ratio)
Using sample calculations, the following decibel values are obtained:
Ratio
0.001
0.1
0.2
0.4
0.5
1
2
4
Decibel Value
-30 dB
-10 dB
-7 dB
-4 dB
-3 dB
0 dB
3 dB
6 dB
As can be seen in the example, halving a value reduces the decibel value by 3 dB.
This remains true regardless of the selected reference variable because only the
ratio counts. Which reference variable is used can be recognized by the additional
letters or numbers following the dimension dB. In acoustics, for example, the
threshold of audibility is the reference variable for a value in dB(A).
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Appendix
Power Specifications
Specifying Power in dBm
A commonly used reference variable in wireless technology is a power of 1 mW.
Power can then be specified in the decibel milliwatt unit (dBm). The following
formula is used:
P [dBm] = 10 * log (P [mW] / 1 mW)
This results in the following power specifications in dBm:
0.5 mW
1 mW
2 mW
4 mW
10 mW
100 mW
200 mW
1W
≈
=
≈
≈
≈
≈
≈
≈
-3 dBm
0 dBm
3 dBm
6 dBm
10 dBm
20 dBm
23 dBm
30 dBm
Using power specifications, it is simple to calculate gain and attenuation. To
calculate an entire system, the individual values for gain and attenuation must
simply be added.
Transmit Power dBm
The information in the following tables applies to the following SIMATIC NET
products:
●
Access point SCALANCE W788-1PRO, W788-2PRO, W788-1RR, W788-2RR
●
Client module SCALANCE W744-1PRO, W746-1PRO, W747-1RR
●
IWLAN/PB Link
Transmit Power in IEEE 802.11b Mode (2.4 GHz)
Data rate [Mb/s]
P0 [dBm]
1
18
18
18
18
2
5.5
11
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Appendix
Transmit Power in IEEE 802.11g Mode (2.4 GHz)
Data rate [Mb/s]
P0 [dBm]
6
17
9
17
12
17
18
17
24
17
36
13
48
11
54
10
Transmit Power in IEEE 802.11a/h Mode (5 GHz)
Data rate [Mb/s]
P0 [dBm]
6
17
9
17
12
17
18
17
24
17
36
13
48
11
54
10
Specifying Power in dBi
If power is specified in dBi, the reference variable is the transmit power of an
isotropic antenna or unipole. Such a (hypothetical) antenna radiates energy from a
central point uniformly in all directions.
From the directional radiation of a real antenna, a dBi value is obtained known as
the antenna gain. This term is misleading in as far as no energy is gained by an
antenna in the physical sense. The higher radiation of a passive antenna results
solely from the concentration of radiation in a certain direction. In other spatial
segments, there is accordingly less power.
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Appendix
Losses Based on the Example of a 2.4 GHz RCoax Cable
Losses due to Longitudinal Attenuation
The longitudinal attenuation of the leaky feeder cable depends on its length and is
calculated according to the following formula:
arc = αrc * l
arc
Longitudinal attenuation of the cable in dB
αrc
Attenuation coefficient in dB/m as specified in the technical specifications of
the cable:
RCoax Cable 0.17 dB/m at 2.4 GHz
connecting cable: 0.55 dB/m at 2.4 GHz
Total length of the cable in m
l
The values for the RCoax cable can be found in the technical specifications in
Chapter 7.
Losses due to Coupling Loss
Coupling loss cd includes the losses at the transition from the cable to the
surrounding space. The coupling loss depends on the construction of the cable and
its physical properties. Values for coupling loss are therefore specified for the
particular cable in the technical specifications.
Losses Due to Spatial Attenuation
Spatial attenuation afr specifies the attenuation between the RCoax cable and the
communications partner. The decisive factor here is therefore the distance
between the RCoax cable and communication partner. The following formula is
used:
afr = 20 * log(4πd / λ)
afr
Spatial attenuation in dB.
d
λ
Distance between cable and antenna in m.
Wavelength of the electromagnetic oscillation in m; at a frequency of 2.4
GHz, the wavelength is 0.125 m.
Note
The formula is valid only for the 2.4 GHz RCoax cable.
Operating Instructions SCALANCE W78x
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Appendix
IEC 61196-4
Values for coupling losses according to IEC 61196-4 already include spatial
attenuation of 2 m. To calculate the actual coupling loss, a spatial attenuation for
the distance of 2 m must be deducted from this value. The coupling loss for a
specified distance between the RCoax cable and the antenna of the
communication partner is therefore calculated according to the following formula:
cd = c95 - 20 * log(4π * 2m / λ) + 20 * log(4πd / λ)
cd
c95
λ
d
Coupling loss of the cable in dB for a specified distance between cable and
antenna.
c95 value of the coupling loss (specified in the data sheet of the cable)
Wavelength of the electromagnetic oscillation in m; at a frequency of 2.4
GHz, the wavelength is 0.125 m.
Distance between cable and antenna in m.
For a frequency of 2.4 GHz, you can also calculate with the following equation in
which you must specify the distance d in meters:
cd 2.4 GHz = c95 - 46 dB + 20 * log(100 * d)
For a SIEMENS SIMATIC NET IWLAN RCoax Cable PE 1/2'' 2.4 GHz (c95 = 69
dB at 2.4 GHz), for example, this results in the following coupling losses:
Distance
1m
2m
5m
10 m
100 m
U
U
Coupling loss
63 dB
69 dB
77 dB
83 dB
103 dB
U
U
Note
The formula is valid only for the 2.4 GHz RCoax cable.
Losses due to Power Splitters
Normally. when a double power splitter is used (one input, two outputs, for
example, RCoax N-Connect Female Power Splitter 2-Way) a loss of 3 dB must be
taken into account.
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Appendix
Receiver Sensitivity
The receiver sensitivity is the minimum power that must be fed to a receiver to
allow communication to take place. The receiver sensitivity is a device-specific
property and depends on the transmission technique and data rate. The
information in the following tables applies to the following SIMATIC NET products:
●
Access point SCALANCE W788-1PRO, W788-2PRO, W788-1RR, W788-2RR
●
Client module SCALANCE W744-1PRO, W746-1PRO, W747-1RR
●
CP 7515, CP 1515
●
IWLAN/PB Link
Receiver Sensitivity in IEEE 802.11b Mode (2.4 GHz)
Data rate [Mb/s]
Pe [dBm]
1
-90
-90
-90
-84
2
5.5
11
Receiver Sensitivity in IEEE 802.11g Mode (2.4 GHz)
Data rate [Mb/s]
Pe [dBm]
6
-87
9
-86
12
-85
18
-83
24
-80
36
-76
48
-71
54
-66
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Appendix
Receiver Sensitivity in IEEE 802.11a/h Mode (5 GHz)
Data rate [Mb/s]
Pe [dBm]
6
-87
9
-86
12
-85
18
-83
24
-80
36
-76
48
-71
54
-66
72 [*]
-73
96 [*]
-68
108 [*]
-63
[*] Turbo mode
System Calculation Based on the Example of RCoax
Procedure
The calculation of the entire system shows whether communication is possible at
the desired transmission rate using the desired components. All losses
(longitudinal attenuation, spatial attenuation, power splitters etc.) are deducted
from the transmit power. An antenna gain is added. The result is the power fed to a
receiver. This power must be higher than the receiver sensitivity. The calculation
can be made with the following formula:
Pe = P0 - arc - cd - aps + GANT - ∆rc - ∆fr > Pe min
Pe
Receiver input power in dBm
P0
Transmit power in dBm
arc
Longitudinal attenuation of the RCoax cable and the feeder in dB
cd
Coupling loss for the distance between RCoax cable and communication
partner (see Section 0)
aps
Power splitter losses in dB
GANT Antenna gain in dB
∆rc
Correction value for the longitudinal attenuation in dB. Depending on the
concrete operating conditions, between 5 and 15 dB.
Operating Instructions SCALANCE W78x
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Appendix
∆fr
Correction value for the spatial attenuation in dB. Depending on the
concrete operating conditions, between 0 and 20 dB.
Pe min Receiver sensitivity in dBm
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Glossary
ACL
Access Control List. List with MAC addresses with the right to access
the wireless network
Ad hoc network
Wireless network between individual devices (point-to-point)
AES
Advanced Encryption Standard, Encryption according to the Rijndael
algorithm.
ARP
Address Resolution Protocol
DFS
Dynamic Frequency Selection. With the Dynamic Frequency Selection
function (DFS), that is also part of the 802.11h expansion, an
automatic channel change is possible if another user or technical
device is discovered on a channel during operation. This includes, for
example, radar systems that also use the 5 GHz frequency band.
Before a channel is used, it is checked to make sure that no other
system is already using the channel or frequency range. If another
user is discovered, data transmission on the channel is stopped and
there is a change to a different channel.
This avoids influence resulting from WLAN systems operating
according to 802.11a in the 5 GHz band.
DHCP
Dynamic Host Configuration Protocol
EAP
Extensive Authentication Protocol. Authentication protocol.
ECM
Ethernet-Client-Module
Hidden node
problem
Two nodes are arranged in a wireless cell so that they are outside the
transmission range of the other station. If they both access the
medium at the same time, collisions result.
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Glossary
IEEE
Institute of Electrical and Electronics Engineers
IEEE 802.11
Standard for wireless networks in the 2.4 GHz range with transmission
rates of up to 2 Mbps.
IEEE 802.11a
Standard for wireless networks in the 5 GHz range with transmission
rates of up to 54 Mbps.
IEEE 802.11b
Standard for wireless networks in the 2.4 GHz range with transmission
rates of up to 11 Mbps.
IEEE 802.11g
Standard for wireless networks in the 2.4 GHz range with transmission
rates of up to 54 Mbps.
IEEE 802.11h
The IEEE 802.11a standard expanded by TPC and DFS.
IEEE 802.11i
Among other things, the standard describes the WPA2 method, the
TKIP procedure and the AES encryption algorithm. IEEE 802.11i
removes a series of weak points in the WEP security mechanism.
IEEE 802.1x
The heart of the standard is the use of a Radius server as the
authentication server. In addition to this, in IEEE 802.1x, the entire
communication is encrypted.
iPCF
industrial Point Coordination Function. This function ensures that the
entire data traffic of a cell is ordered, controlled by the access point.
By avoiding collisions, the throughput can be optimized even with
large numbers of nodes. iPCF also allows fast cell changes.
PST
Primary Setup Tool
RADIUS
Remote Authentication Dial - User Service for secure communication
networks
Roaming
Free movement of wireless LAN nodes even beyond the boundaries
of an access point's cell. The nodes and can move from one cell to the
next without any noticeable interruption.
RTS/CTS
Request to send/Clear to send. Scheme for avoidance of collisions.
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Glossary
SSID
Service Set Identifier (SSID) is used to identify a wireless network
based on IEEE 802.11
SNMP
Simple Network Management Protocol. Standardized protocol for
transporting network management information.
TKIP
Temporal Key Integrity Protocol. Scheme for cyclic changing of keys
in WLANs.
TPC
The Transmit-Power Control function (TPC) introduced as a
supplementary function by the 802.11h expansion for 5 GHz
components allows an automatic adaptation of the transmit power.
Information on the attenuation values and the expected budget
reserves in received power are taken into account. TPC is also
intended to make sure that the maximum permitted transmit power of
a channel specified by the relevant regulatory bodies is not exceeded
by the component. TPC attempts to operate with the minimum
transmit power between the communicating stations or between
access point and station.
VAP
Virtual Access Point. By using virtual access points, various SSIDs
(maximum of 8 per WLAN interface) can be configured with different
security settings. You can assign each virtual AP to a particular VLAN.
WBM
Web Based Management. HTTP-based configuration method in which
an HTTP server is used in the SCALANCE W78x.
WDS
Wireless Distribution System. Radio links for connecting the access
points for an extended service set (ESS)
WEP
WEP (Wired Equivalence Privacy) is an optional part of the IEEE
802.11 standard. WEP specifies methods of authentication and
encryption working with fixed keys stored on the device. All devices
that want to access a network in which WEP is used must first be
supplied with the same keys. WEP works with key lengths between 40
and 128 bits. Occasionally different key lengths are encountered (for
example 256 bits) but these are not intended in the vendorindependent WLAN standards IEEE 802.11b and 802.11g. The keys
can only be changed manually.
Wi-Fi
Wireless Fidelity. The Wi-Fi Alliance is a group of WLAN
manufacturers that tests and certifies the interoperability or WLAN
products. Wi-Fi is a certification of WLANs according to 802.11b and
is performed by the WECA of the WiFi parent organization. This
certification confirms the interoperability of WLAN products operating
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Glossary
in compliance to the 802.11b standard.
The Wi-Fi Alliance also develops standards. The WiFi Alliance has
developed its own architectures for security procedures that have not
yet been standardized such as the WiFi Protected Architecture (WPA)
to be able to test the compatibility of the various manufacturers'
products.
For real-time transmission, the Wi-Fi Alliance has specified Wi-Fi
Multimedia (WMM) for transmissions with guaranteed quality of
service (QoS).
WMM
Wi-Fi Multimedia
WPA
WPA (Wi-Fi Protected Access) is a method specified by the Wi-Fi
Alliance to close security gaps in WEP. Authentication using a server
is stipulated (802.1x). The dynamic exchange of keys at each frame
introduces further security. As the encryption method, you can choose
between TKIP (Temporal Key Integrity Protocol) and AES (Advanced
Encryption Standard).
Although WPA never became an official component of the IEEE
802.11 family of standards, it has become very widespread in a short
time. This, however, applies only to the WPA procedure described
above using TKIP. The optional possible implementation of WPA on
the basis of AES, on the other hand, did not become established and
is therefore irrelevant in everyday practice. AES only took on practical
value only with the development of the later WPA2 standard.
WPA-PSK
WPA-PSK is a weakened form of WPA. In this method, authentication
is not established by a server but is based on a password. This
password must be configured manually on the client and server.
Wherever possible, you should change to the WPA method to achieve
greater security.
Operating Instructions SCALANCE W78x
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Index
A
ACL........................................................ 174
Ad Hoc networks ..................................... 14
Adopt MAC Address................................ 69
Antennas ......................................... 34, 151
ARP table .............................................. 192
Auth Log ................................................ 228
Authentication.................................. 84, 163
B
Bandwidth reservation........................... 213
Basic Wizard...................................... 61, 63
Beacon .................................................. 149
Bridge .................................................... 180
C
Channel Selection ................................... 72
CLI commands
shortcuts for commands .................... 102
symbolic representation..................... 103
Client List............................................... 230
Command Line Interface ....................... 102
C-PLUG ........................................... 28, 136
D
Decibel................................................... 261
DHCP server ......................................... 112
DLC protocol............................................ 48
installation ............................................ 49
E
E-mail .................................................... 121
Encryption........................................ 86, 165
IEEE 802.11b...........................................23
IEEE 802.11g...................................23, 157
IEEE 802.11h...........................................23
IP address................................................63
IP, TCP/IP, ICMP, SNMP ......................242
IP-Alive...................................................224
iPCF .................................................93, 215
iPCF Wizard.......................................61, 93
iQoS .......................................................238
iQoS .......................................................213
L
Learning Table .......................................192
LED simulation.......................................100
Lightning Protection .................................31
Link Check .............................................220
Locale setting.........................................104
Log table ................................................227
Losses....................................................264
M
MAC filter ...............................................210
Max Age.................................................195
Multichannel configuration .......................16
N
NAT ........................................................203
New ........................................................101
O
Overlap AP.............................................236
H
Hello Time ............................................. 195
Help function.......................................... 101
HiPath.................................................... 106
HTTPS..................................................... 60
Hybrid cable............................................. 35
P
Password .................................................76
Path cost ................................................197
Power specifications ..............................262
Power Supply...........................................33
PRESET PLUG........................................44
Primary Setup Tool
Installation ............................................51
via command line .................................56
Priority....................................................196
Protocol filter ..........................................212
I
IEEE 802.11a .......................................... 23
R
RADIUS ...........................................88, 178
F
Forward delay........................................ 195
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Index
Receiver sensitivity................................ 266
Redundant connection .......................... 222
Refresh .................................................. 101
RTS/CTS ....................................... 149, 152
S
Save
Device data ........................................ 132
Security settings ...................................... 79
Security Wizard ................................. 61, 75
Set values.............................................. 101
SNMP .................................................... 122
SNTP ..................................................... 130
Spanning Tree ............................... 192, 240
Spanning tree port parameters.............. 196
SSID ........................................................ 80
Standalone configuration......................... 13
Storm threshold ..................................... 202
Operating Instructions SCALANCE W78x
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Suppress SSID broadcasting.................167
T
Transmit power ......................................149
TTL.........................................................112
V
Versions .................................................229
W
WDS.......................................................181
Web Based Management ........................57
WEP.........................................................87
Wireless access .......................................15
Wizards ....................................................57
WPA.......................................................167
WPA2.......................................................90
274
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