SDconnect in the Workshop Network for Administrators

Star Diagnosis Info
SDconnect in the Workshop Network
for Administrators
Star Diagnosis variants
4
Star Diagnosis compact
Star Diagnosis compact³ w
Daimler AG
GSP/OI
D-70546 Stuttgart
Operating system
Windows XP
Network
LAN
WLAN
Status 04/08 (valid until recalled)
page 1 of 9
Objective
This document is aimed at network administrators in workshops. Here you will find additional technical
information about the network capability of SDconnect, suitable application scenarios and in special cases
necessary adjustments for your workshop network.
Please pass this information on to your users on-site about the correct use in your network.
Overview of Contents
4
1
Overview of SDconnect and Star Diagnosis compact³ w / compact Network Operation ............................. 3
1.1
The connection between SDconnect and Star Diagnosis systems ............................................................................ 3
1.2
Star Diagnosis systems in network operation ............................................................................................................... 3
1.3
General information for operating WLAN networks...................................................................................................... 4
2
Functionality in LAN and WLAN ............................................................................................................................. 5
2.1
Operating SDconnect with cable connection ................................................................................................................ 5
2.2
Operating SDconnect in "Road wireless network" mode............................................................................................. 5
2.3
Operating SDconnect in "Workshop wireless network" mode.................................................................................... 5
3
Network parameters in LAN and WLAN ................................................................................................................ 6
3.1
Initial startup of the devices in the network .................................................................................................................. 6
3.2
Suitable WLAN frequency ranges / WLAN standards .................................................................................................. 6
3.3
Country-specific settings .................................................................................................................................................. 6
3.4
WLAN encryption for workshop wireless network (infrastructure mode) ................................................................. 6
3.5
IP designation, DHCP and MAC addresses .................................................................................................................... 6
3.6
Subnets and routing / Multicast ..................................................................................................................................... 7
3.7
Access control according to 802.1x / MAC filter / RADIUS ...................................................................................... 7
3.8
DNS and proxy ................................................................................................................................................................... 7
4
Troubleshooting ....................................................................................................................................................... 8
4.1
SDconnect: WLAN not found ........................................................................................................................................... 8
4.2
WLAN connection disrupted during use ......................................................................................................................... 8
4
4.3
Star Diagnosis compact³ w / compact system: Network not functioning .............................................................. 8
4.4
Star Diagnosis compact³ w / compact4 system: WLAN not connected.................................................................... 9
Daimler AG
GSP/OI
D-70546 Stuttgart
Status 04/08 (valid until recalled)
page 2 of 9
1
Overview of SDconnect and Star Diagnosis compact³ w / compact4 Network
Operation
In the following chapter, you will learn which operating modes SDconnect can be used in networks and how the
applications on Star Diagnosis systems communicate via networks.
1.1
The connection between SDconnect and Star Diagnosis systems
The SDconnect multiplexer is the interface through which the communication with vehicles is established. This always
takes place via a vehicle connection cable.
Communication between SDconnect and the Star Diagnosis system can take place via the following connection types:
- Cable connection (crosslink cable) ……………………………………………………………………………………… (cp. Chap. 2.1)
- Via a WLAN ad-hoc network (Star Diagnosis system with WLAN capability required)…………… (cp. Chap. 2.2)
- Via a WLAN infrastructure (Star Diagnosis system with WLAN capability required)……………….(cp. Chap. 2.3)
Cable connection
(RJ45 LAN cable connection)
Road wireless
network
Workshop wireless
network
(without WLAN Access Point
infrastructure )
(with WLAN Access Point
infrastructure)
1
1.2
2
3
Star Diagnosis systems in network operation
4
The applications on the Star Diagnosis compact³ w / compact system partly presupposes a network connection to
Daimler's central server systems. These systems can be reached via the Internet.
Depending on the operation's workshop network, a connection via a proxy server may be necessary for internet
access to the central Daimler Server system.
SDconnect only communicates with the Star Diagnosis compact³ w / compact4 system through the network (or if
need be via an Access Point) and therefore requires no connection to other servers, unlike the Star Diagnosis system.
Detailed information on operating and setting up SDconnect and the Star Diagnosis systems
can be found in each of the manuals and in the information system INFO on your Star
Diagnosis system.
The Star Diagnosis compact³ w system's diagnosis functions are also available without access to the workshop
network/Internet. Should you need this access, but have no WLAN infrastructure, you can also connect your Star
4
Diagnosis compact³ w / compact system via a normal LAN cable with RJ45 connector to an available network or
4
router. After that, switch the Star Diagnosis compact³ w / compact system to "Workshop network/Internet: cable
connection" mode under the connections tab in SDnetControl.
For the LAN connection, always use the network socket under the housing flap!
SDconnect cannot be connected with Star Diagnosis compact³ w / compact4 via the LAN connection.
Daimler AG
GSP/OI
D-70546 Stuttgart
Status 04/08 (valid until recalled)
page 3 of 9
1.3
General information for operating WLAN networks
The use of wireless communication networks and the use of systems in these networks must
meet the appropriate rules and regulations of your country. More information can be obtained
from the relevant authorities. Make sure you know the country-specific conditions for
operation of wireless communication networks in your market. If necessary, remove nonpermissible wireless cards from your system.
Information about the system can be found in the documentation enclosed with the Star
Diagnosis delivery package and the documents supplied in the INFO information system.
An additional wireless card is required for the wireless network in some markets and for
certain systems. To find out if your Star Diagnosis system is suitable for wireless operation in
your market, please contact your market rep. or check in the After-Sales Portal at
http:// aftersales.mercedes-benz.com.
Daimler AG
GSP/OI
D-70546 Stuttgart
Status 04/08 (valid until recalled)
page 4 of 9
2
Functionality in LAN and WLAN
The necessary configuration of the devices for network functions as well as the switching between networking modes
is described in the SDconnect manual.
2.1
Operating SDconnect with cable connection
SDconnect and the Star Diagnosis compact³ w / compact4 system can be operated without
WLAN functionality. In this case, SDconnect is connected with the Star Diagnosis compact³ w
4
/ compact system via the supplied green cable. Both devices automatically switch to "Cable
connection" mode for communication between the Star Diagnosis system and SDconnect. The
connection of the Star Diagnosis system to the server/Internet is not affected. This can take
place via the "workshop cable network," but "no connection" can also be selected.
The "cable connection" connection type for the Star Diagnosis system to SDconnect cannot be
manually selected in the "Connections" tab in SDnetControl, but instead occurs automatically.
2.2
Operating SDconnect in "Road wireless network" mode
Should you have no WLAN available when in mobile operation or in the workshop, use the
"Road wireless network" mode as the connection type between SDconnect and the Star
Diagnosis system. Both systems create an ad-hoc network for this.
Remove the green connection cable and switch to "Road wireless network" mode under the
"Connections" tab in SDnetControl. Check on the SDconnect display, whether the selection of
"Road wireless network" mode was successful.
Please note that the wireless connection range is restricted to the car's immediate vicinity.
Avoid using "Multiplexer: road wireless network" mode, as long as you
are in a location that has a permanent WLAN installed. The data
throughput could go back through the parallel networks.
Do not set more than one SDconnect in your workshop to "Road wireless network" mode. The
"Workshop wireless network" infrastructure mode is intended for the stable operation of
several SDconnects within a workshop. By setting up an Access Point, the Star Diagnosis
systems can also access the Internet via the wireless network.
2.3
Operating SDconnect in "Workshop wireless network" mode
Should you have a fixed WLAN available in the workshop, use SDconnect and the Star
4
Diagnosis compact³ w / compact system in "Workshop wireless network" mode. This will
4
establish communication between SDconnect and the Star Diagnosis compact³ w / compact
system, as well as Internet access via the WLAN.
For concerns about wireless network problems during an operation
step, please use cable connections:
please connect SDconnect and the Star Diagnosis compact³ w /
compact4 system with the supplied green connection cable before
beginning work. Both devices automatically switch to "cable
connection" mode. Communication between the Star Diagnosis
4
compact³ w / compact system and the vehicle now takes place
independently of the wireless connection, while the Internet connection
continues to use the WLAN.
Daimler AG
GSP/OI
D-70546 Stuttgart
Status 04/08 (valid until recalled)
page 5 of 9
3
3.1
Network parameters in LAN and WLAN
Initial startup of the devices in the network
SDconnect and the Star Diagnosis compact³ w / compact4 system must be configured to the location before use in
the network. The necessary detailed information on network requirements can be found in the manuals.
The description of the network parameter configuration steps can be found in the SDconnect
manual.
Further information on network settings (proxy and printer setup, data transfer, add-on
downloads) can be found in the Star Diagnosis system manuals.
A detailed representation of different network scenarios and an introduction to networking
can also be found in the "Connectivity guide."
3.2
Suitable WLAN frequency ranges / WLAN standards
IEEE 802.11b/g (11 or 54 Mbit/s) - Radio frequency 2.4 GHz
3.3
Country-specific settings
The wireless regulations of each country must be adhered to by the systems.
Workshop WLAN (Infrastructure mode): the country-specific radio frequencies are defined by the access point.
SDconnect and Star Diagnosis System must be matched to the access point via the country configuration.
Road wireless network (ad-hoc mode): the country must be selected during the configuration (Default: global).
Only then can it be ensured that the systems are using the correct radio channels and transmitting power. A
permitted ad-hoc radio frequency will be automatically selected after the configuration of the systems.
-
3.4
WLAN encryption for workshop wireless network (infrastructure mode)
Supported authentication
Network authentication open
Network authentication WPA-PSK
Encryption in WLAN infrastructure mode
Data encryption WEP 128 bit
Data encryption TKIP
Using older WEP encryption is not recommended.
WEP with 64 bit key length is no longer supported.
3.5
IP designation, DHCP and MAC addresses
For integrating the systems into the WLAN infrastructure and the LAN, a network configuration (IP address, subnet
4
mask, gateway) must be entered for SDconnect and the Star Diagnosis compact³ w / compact system respectively.
For the devices, the network configuration can be:
- set manually
- set via DHCP with dynamic IP address selection, or
- set via DHCP depending on the device's MAC address.
Using DHCP can lead to waiting times during system start-up, if the configuration has to be
updated.
Daimler AG
GSP/OI
D-70546 Stuttgart
Status 04/08 (valid until recalled)
page 6 of 9
4
The Star Diagnosis compact³ w / compact system's MAC addresses can be found under the Configuration Network Network adapter tab in SDnetControl and on a sticker on the underside of the device's housing. Further
information can be found in the SDnetControl manual.
Please use the MAC address of the interface suitable for the respective connection.
To show the WLAN MAC address in the SDconnect display, press the - button four times when the system is
activated. The WLAN MAC address is also on the WLAN card. Information on installing and removing the SDconnect
WLAN card can be found in the SDconnect handbook.
3.6
Subnets and routing / Multicast
4
The Star Diagnosis compact³ w / compact system recognizes the available SDconnect devices via IP multicast
network packages. These contain special IP addresses for this. As a rule, these multicast packages are blocked by
firewalls and routers. The forwarding of IP Multicast packets may need to be enabled in the router or WLAN controller
solution.
4
Star Diagnosis compact³ w / compact systems therefore only reliably recognize SDconnects
that are in the same subnet, e.g. within the WLAN infrastructure.
If the special multicast packages are not passed on between the subnets, a Star Diagnosis compact³ w / compact4
system connected to a LAN does not recognize a SDconnect connected to WLAN, even when the remaining IP
configuration is correct! So SDconnect operation should only take place within one subnet.
IP Multicast uses the following IP addresses:
- 225.0.0.37 port 4012 (UDP)
- 225.0.0.38 port 4011 (UDP)
To use SDconnect, the following ports are also used:
- 4000 to 4010 (TCP and UDP)
- 4349 (TCP and UDP)
If the routers and firewalls support the forwarding, these connections have to be enabled between the networks.
3.7
Access control according to 802.1x / MAC filter / RADIUS
Access control based on MAC addresses is possible, e.g. via MAC filter accessible WLAN Access Points. More
complex, specialized access controllers must also support IP multicast packages for the correct function.
Access control according to 802.1x, e.g. certificate based, is not supported.
3.8
DNS and proxy
4
For the Star Diagnosis compact³ w / compact system's Internet access, there are two alternative configurations:
- Direct Internet access: The Star Diagnosis compact³ w / compact4 systems receive direct Internet access at the
firewall. For this, an additional DNS server must be entered in the IP configuration.
- Use of a proxy: If a proxy is entered in the network configuration, all Internet accesses will be directed through it.
If the proxy is addressed to an IP address (e.g. 192.x.x.x.), no DNS entry is needed.
The Star Diagnosis compact³ w / compact4 system supports a BASIC authentication at the proxy, but no NTLM.
Please configure the proxy settings according to the Star Diagnosis system's manuals.
SDconnect requires no DNS or proxy settings, and no Internet access.
Daimler AG
GSP/OI
D-70546 Stuttgart
Status 04/08 (valid until recalled)
page 7 of 9
4
4.1
Troubleshooting
SDconnect: WLAN not found
The current connection status of SDconnect and the error message display are described in the SDconnect manual.
Ensure that the distance between the Star Diagnosis compact³ w / compact4 system and SDconnect / Access Point
is not more than approximately 15 meters, and that SDconnect is behind the windshield (optimal: visual connection
between the devices).
Ensure that the network mode (cable connection, WLAN road mode, WLAN infrastructure mode) matches the setting
4
in the Star Diagnosis compact³ w / compact system.
Switch off SDconnect and then on again, and check the display once more.
Check whether the same SSID and encryption/key was used on the devices for use in WLAN road mode. If need be,
re-configure using SDnetAssist.
4.2 WLAN connection disrupted during use
The current connection status of SDconnect and the error message display are described in the SDconnect manual.
Ensure that the distance between the Star Diagnosis compact³ w / compact4 system and SDconnect / Access Point
is not more than approximately 15 meters, and that SDconnect is behind the windshield (optimal: visual connection
between the devices).
Electrical devices such as electric motors, cordless telephones, Bluetooth devices and other wireless equipment can
possibly lead to interference or reduced data throughput. Please use SDconnect and the Star Diagnosis compact³ w /
4
compact system at an adequate distance from the sources of such interference.
4.3
4
Star Diagnosis compact³ w / compact system: Network not functioning
-
Is the LAN network cable inserted properly?
•
Under the housing flap and not on the side LAN
interface for SDconnect?
- Is the network cable plugged into an active LAN
socket on your network?
•
Are the lights in the Star Diagnosis system's
network socket flashing?
- Test the connection under SDnetControl / network
tools. Opening the "Network tools" tab in
SDnetControl automatically conducts the following
tests and displays the results:
•
Short test of local network (ping the gateway), if
needed proxy server (test of a dummy query) ok?
•
Availability of application servers (internet
connection, if needed via proxy with
authentication) ok?
•
If errors have already been reported for the local
network, check the WLAN use to see if the WLAN
is connected.
- Check via advanced network diagnosis whether an IP
address was assigned, whether the MAC address is
known in DHCP and whether there are still enough
free IP addresses available for DHCP.
- Is the MAC address used enabled at the local firewall?
Removing and reinserting the network cable generally
has no effect. Instead of that, restart the device or
deactivate and reactivate the network card.
Daimler AG
GSP/OI
D-70546 Stuttgart
Status 04/08 (valid until recalled)
page 8 of 9
4.4
Star Diagnosis compact³ w / compact4 system: WLAN not connected
Check the connection under SDnetControl/ network
tools / WLAN signal strength as described in the
SDnetControl manual. A connection under 10% reception
status is a sign that the WLAN was not recognized
(driver-dependent display).
Deactivate the WLAN interface, wait around 20 seconds.
Activate the WLAN interface. In most cases, the system
now connects to the WLAN. If required, repeat up to four
times.
Daimler AG
GSP/OI
D-70546 Stuttgart
Status 04/08 (valid until recalled)
page 9 of 9
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