EtherHub-16mi+
Advanced Reference Guide
EH1502S
E0398-R01
150858-101
Copyright © 1998 by Accton Technology Corporation. All rights reserved.
No part of this document may be copied or reproduced in any form or by any means without the
prior written consent of Accton Technology Corporation.
EtherHub-16mi+
Accton makes no warranties with respect to this documentation and disclaims any implied warranties
of merchantability, quality, or fitness for any particular purpose. The information in this document
is subject to change without notice. Accton reserves the right to make revisions to this publication
without obligation to notify any person or entity of any such changes.
Intelligent Stackable Multi-segment Ethernet Hub
with 16 10BASE-T (RJ-45) ports, 1 10BASE2 (BNC) port,
and SNMP agent
International Headquarters
No. 1 Creation Road III,
Science-based Industrial Park
Hsinchu 300, Taiwan, R.O.C.
Phone: 886-3-5770-270
FAX: 886-3-5770-267
BBS: 886-3-5770-654
Internet: support@accton.com.tw
USA Headquarters
1962 Zanker Road
San Jose, CA 95112
Phone: 408-452-8900
FAX: 408-452-8988
BBS: 408-452-8828
FAST FAX: 408-452-8811
Accton is a trademark of Accton Technology Corporation. Other trademarks or brand names
mentioned herein are trademarks or registered trademarks of their respective companies.
EH1502S
E0398-R01
150858-101
EtherHub 1500 System
Advanced Reference Guide
Contents
Introduction
Introduction
1
Making the Connections Required for System Configuration
1
Onsite Connection
Modem Connection
In-Band Network Connection
Starting the Configuration Program
Using Configuration Program
System Menu
Displaying System Information
Changing System Configuration
Assigning Trap Managers
Downloading System Software
Restarting the Agent
Reverting Configuration to Factory Settings
Save Configuration
Reset Configuration
Control Menu
Configuring Hub Parameters
Configuring Port Parameters
Defining Backup Ports
Setting External Configure Buttons
Performance Menu
Threshold Menu
Threshold Parameters
Event Activation
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8
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9
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10
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11
Troubleshooting
11
Pin Assignments for Serial Port Connections
11
Network Management Access
DB9 Serial Port Pin Description
DB9 Port Pin Assignments
DB9 Serial Port to RJ-45 Converter Connector Pin Assignment
DB9 PC's COM Port to RJ-45 Converter Connector Pin Assignment
DB25 RS232 to RJ-45 Converter Connector Pin Assignment
Connection from Hub's 9-Pin Serial Port to PC's 9-Pin COM Port
Connection from Hub's 9-Pin Serial Port to Modem's 25-Pin DCE Port
Connection from Hub's 9-Pin Serial Port to PC's 25-Pin DTE Port
Optional Management Software
11
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12
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13
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13
The master hub (and connected stack) can be managed through a PC or
modem connection to the hub’s serial port, or with SNMP-based network
management software such as AccView/Open. Using the configuration
program, you can perform the following tasks:
•
•
•
•
•
•
•
Enable/disable any port
Assign backup ports
Set threshold values
Configure SNMP parameters
Display system information or statistics
Download system firmware
Restart the system
Making the Connections Required for System Configuration
The diskette included with the EtherHub-16mi+ contains a menu-driven
configuration program. To use this program, make a direct PC or modem
connection to the serial port on the master hub in the stack.
This section describes how to access the menu-driven configuration program via:
•
•
•
Onsite connection
A workstation connected to the serial port on the hub.
Modem connection
A workstation connected to the serial port of a remote hub via modems.
In-band connection
It also describes how to access the embedded SNMP agent over the network
using AccView/Open or other third-party network management software.
Onsite Connection
Attach a PC to the serial port on the master hub. Use the null-modem cable
(and DB9 / RJ-45 converters) provided with this package, or use a null modem
connection that complies with the wiring assignments shown in the back of
this guide.
Modem Connection
Configure the Hub Site: Connect the master hub's DB9 serial port to the
modem's serial port using standard cabling. For most modems, which use a
25-pin port, you will have to provide an RS232 cable with a 9-pin connector on
one end and a 25-pin connection on the other end. You do not have to set the
modem at the hub's site, because the hub will automatically configure it to
auto-answer mode.
Configure the Remote Site: At the remote site, connect the PC's COM port
(COM 1~4) to the modem's serial port.
In-Band Network Connection
The EtherHub 1500 sytem can also be managed from a computer using
network management software such as AccView/Open. However, prior to
accessing the hub, you must first configure it with a valid IP address, subnet
mask, and default gateway using an out-of-band connection.
1
EtherHub 1500 System
Note: The on-board program only provides access to basic configuration functions. To
access the full range of SNMP mangement functions, you must use SNMP-based
network mangement software. Accton provides Windows-based SNMP software
called AccView/Open with this package. Note that AccView/Open’s Hub Manager
module can be easily integrated into most third-party management platforms.
Advanced Reference Guide
3. If setting up a remote connection via modems:
Select Modem Channel to open the Phone List menu as shown below, and
enter the phone number and press [Enter] to start the dialing mechanism.
Starting the Configuration Program
Insert the distribution diskette provided with your EtherHub-16mi+ into the PC's
floppy drive.Then activate the EtherHub 1500 System Configuration Program
as described below.
Note: 1. When using a PCMCIA modem connection, add the following entry to your
config.sys file: “device=cardtalk.sys /A /Com3IRQ=4”. If your PC has a PCMCIA
modem or multi-I/O card, set the proper IRQ by typing "EH15SCP/i [irq #]".
2. Help is available by entering "EH15SCP/?".
3. This program can only run under DOS, or in Windows DOS shell.
1. Type "EH15SCP" at the DOS prompt C:\>EH15SCP. Using arrow keys, select
the communication port on the workstation that is connected to the hub.
Once the connection is established, the main menu for out-of-band
configuration appears as shown below.
Using Configuration Program
The EtherHub 1500 System Configuration Program allows you to define
system parameters, manage and control stacked hubs and associated ports,
set threshold levels, and monitor network conditions. The following table
briefly describes the menu selections available for this program.
Menu
Syste m
2. Select the appropriate option from the DCE/DTE dialog box:
Terminal Channel for local hookup, or Modem Channel for remote connection.
2
Description
De fine s d e scrip tio n fo r the syste m.
Se ts syste m p arame te rs.
Co nfig ure s Co mmunitie s, IP and IPX trap manag e rs.
Do wnlo ad s ne w ve rsio n o f firmware to up d ate yo ur syste m.
Re starts yo ur syste m.
Re ve rts all co nfig uratio n se le ctio ns to facto ry d e fault se tting s.
Save s the co nfig uratio n chang e s mad e d uring the curre nt se ssio n.
Re sto re the last save d co nfig uratio n.
Co ntro l
Iso late s/attache s a hub , o r se ts the hub ' s se g me nt..
Disab le s/e nab le s a p o rt..
Se ts up to 3 p airs o f b ackup p o rts. Each p air co ntains a maste r
and slave p o rt. The slave p o rt is no rmally d isab le d . Whe n the
maste r p o rt fails, the syste m d isab le s the maste r p o rt and e nab le s
the slave p o rt to maintain the link.
Push b utto n Enab le s/d isab le s Co nfig ure b utto n to p re ve nt unautho rize d use .
Pe rfo rmance Pro vid e s 4 sub -me nus - Syste m, Se g me nt, Hub and Po rt. This se le ctio n allo ws yo u to
vie w ne two rk p e rfo rmance fo r the se le cte d co mp o ne nt. Pe rfo rmance is me asure d in
te rms o f frame s re ce ive d , numb e r o f b yte s, co llisio n rate , CRC e rro rs, alig nme nt e rro rs,
and to tal e rro rs.
Info rmatio n Co nfig uratio n Trap Manag e rs Do wnlo ad Re start Facto ry Se tting Save Co nfig uratio n Re se t Co nfig uratio n Hub Po rt Backup p o rt -
3
EtherHub 1500 System
Menu
Thre sho ld
Advanced Reference Guide
Description
(co ntinue d )
Pro vid e s 5 sub -me nus - Syste m, Any Hub , Any Po rt, Se le ct Hub and Se le ct Po rt.
This me nu allo ws yo u to se t thre sho ld le ve ls fo r the hub o r p o rt in te rms o f frame s
re ce ive d , numb e r o f b yte s, co llisio ns, CRC e rro rs, alig nme nt e rro rs and to tal e rro rs.
Changing System Configuration - Use the Configuration command from the
System Menu to modify current values for the following parameters:
System Menu
Menu
Description
Information
Configuration
Displays EtherHub system information.
Modifies various parameter settings necessary for communicating with
the management agent.
Selects management stations to receive trap messages from the system.
Downloads a binary file to the SNMP agent.
Resets the SNMP agent.
Reverts all configuration settings to the original factory settings.
Saves the configuration changes made during the current session.
Restores the last saved configuration.
Trap Managers
Download
Restart
Factory Settings
Save Configuration
Reset Configuration
Displaying System Information - Use the Information command to display and
modify system information about the EtherHub stack, or for quick system
identification. View a description of the system, including:
Field
Description
IP Address
IP address of the agent you're managing. The EtherHub system may
be run on SNMP protocol over UDP/IP transport protocol. In this
environment, all systems on the Internet, such as network interconnection
devices and Network Management Stations (e.g., the PC running
AccView) are assigned an IP address.
Hardware address of EtherHub-16mi+.
Subnet mask of the agent you've selected. This mask identifies the
host address bits used for routing to specific subnets.
Default gateway used in passing trap messages from the EtherHub
agent to the management station.
For internal use only.
For internal use only.
The selected format used on the LAN; i.e., type used by the IPX
network where the EtherHub-16mi+ is installed. If the specified frame
type is not detected, the EtherHub-16mi+ will automatically detect the
current type. (Values: 802.3, Ethernet II, SNAP, 802.2)
Identifies the IPX network number for the connected slot. You can
disable IPX protocol by setting this number to zero.
MAC Address
Subnet Mask
Default Gateway
Default NMS
NMS-Download File
IPX Frame Type
IPX Network Number
Assigning Trap Managers - Use the Trap Managers command from the
System Menu to modify current values for the following parameters:
Field
Description
System Description
System Uptime
System Name
Contact
Location
Name and version of the EtherHub-16mi+ software.
Length of time the EtherHub management agent has been running.
Name assigned to the EtherHub system.
Contact person for the system.
Specifies the area or location where the system resides.
4
5
EtherHub 1500 System
Advanced Reference Guide
Field
Description
SNMP Community Names
The community strings authorized for trap management access. All
community strings used for IP and IPX Trap Managers must be listed in
this table.
A community entry authorized for trap management access.
Management access is restricted to read-only (RO) or read/write (RW).
The status of the current entry can be set to VALID or INVALID.
IP management stations selected to receive trap messages from the
system.
IP address of the management station.
The community string required for trap management access.
The status of the current entry can be set to VALID or INVALID.
IPX management stations selected to receive trap messages from the
system.
Identifies the IPX network number for the connected slot.
MAC address of the authorized trap manager.
The community string required for trap management access.
The status of the current entry can be set to VALID or INVALID.
Community Name
Access
Status
IP Trap Managers
IP Address
Community Name
Status
IPX Trap Managers
Net Number
Node ID
Community Name
Status
Control Menu
Menu
Description
Hub
Includes hub description and commands to isolate/reattach network
connection, or assign hub to a specified segment.
Includes port description and command to enable/disable selected port.
Defines master/slave port pairs used for emergency backup.
Enables/disables external Configure button on selected hub.
Port
Backup Port
Push Button
Configuring Hub Parameters - Use the Hub command from the Control menu
to configure any hub in the stack. (Select the required hub using the <F4> and
<F5> function keys.) This menu provides a brief description of the selected
hub, and also allows you to isolate/reattach the hub from the network.
Downloading System Software - Use the Download command from the
System Menu to load available software updates into the agent's flash ROM.
The download file should be an EtherHub binary file from Accton Technology
Corporation; otherwise the agent will not accept it.
Invoking this command brings up the Download dialog box. When all entries
are confirmed, the display will change to show the progress of the download
process. After downloading the new software, the agent will automatically
restart itself. The following describes each entry in the dialog box:
Field
Description
Hub ID
Hub identifier within the stack. (Up to 10 hubs may be connected via
the management channel.) Note that hub IDs can only be assigned
using the Configure button as described in the Quick Installation Guide.
The physical position in the stack.
Any user-defined name for the selected hub.
The stack connection may be set to ISOLATED or ATTACHED. Note
that the Isolated LED will be lit if the hub is isolated. (Although the
status of OTHER is provided, this is for internal use only.)
Attach the hub to a specified segment. The appropriate Segment icon
will light up to show that the hub has been connected.
Indicates hub type as EH1501S, or EH1502S (Master or Slave).
Indicates the current firmware version number.
Position
Name
Status
Field
Description
Timeout
Retry
Filename
Transferred Block
Total Blocks
Time to wait for a response.
Number of attempts to make contact.
The binary file to download.
Current number of data block being transferred.
Total number of blocks to transfer.
Segment
Type
Firmware Ver.
Restarting the Agent - Use the Restart command from the System menu to
reset a selected agent. LEDs on the agent will light up sequentially as it
executes the initialization test.
Reverting Configuration to Factory Settings - Use the Factory Settings
command from the System menu to change all configuration settings back to
the factory defaults.
Save Configuration - Saves configuration settings made during current session.
Reset Configuration - Restores configuration settings saved the last time.
6
7
EtherHub 1500 System
Advanced Reference Guide
Configuring Port Parameters - Use the Port command from the Control menu
to configure the ports for any hub in the stack. (Select the required hub using
the <F4> and <F5> function keys.) This menu provides a brief description of
the selected hub, and also allows you to enable/disable any port in the
selected hub.
Field
Description
Slave Port
Hub
Port
Pair member serving as the backup link.
Hub ID for the slave port.
Port identifier for the slave port.
(continued)
Setting the External Configure Buttons - Use the Push Button command in
the Control Menu to disable or enable the Configure button on any hub.
Performance Menu
Field
Description
Hub ID
Position
Port Identifier
Name
Type
Status
Part
Link State
Hub identifier within the stack.
The physical position in the stack.
Numeric identifier 1~16 or ALT.
User-defined name for selected port.
Connection types include 10BASE-T (RJ-45), BNC, AUI or FIBER.
Any port may ENABLED or DISABLED.
Indicates if the port is partitioned.
Indicates if the port has a valid connection to an external device.
Displays statistics for the System (entire stack), selected Segment, selected
Hub, or all Ports on a specified hub. (Select any segment or hub using the
<F4> and <F5> function keys.)
Defining Backup Ports - Use the Backup Port command in the Control Menu to
define up to three master/slave port pairs. If the connection to the master port
fails, the slave port will automatically take over.
Field
Description
Backup Set
Defines up to three backup port pairs; each of which can be set to
ACTIVE or INACTIVE.
Pair member serving as the primary link.
Hub ID for the master port.
Port identifier for the master port.
Master Port
Hub
Port
8
Menu
Description
Frames
Bytes
Collisions
Allignment Errors
CRC Errors
Number of frames passing through this device.
Number of bytes passing through this device.
Number of simultaneous node transmissions detected by this device.
Number of mis-synchronized data packets detected by this device.
Number of Ethernet Cyclic Redundancy Check errors detected by this
device.
Total number of errors, including FCS, allignment, Frames Too Long,
Short Events, Late Events, Jabber, and Data Rate Mismatches
detected on this device.
Total Errors
1: The values displayed have been accumulated since the last system reboot or counter reset.
9
EtherHub 1500 System
Advanced Reference Guide
Threshold Menu
Select the Threshold command from the menu bar to define limits for the
parameters monitored by the hub system. Limits can be set for the System
(entire stack), Any Hub or Any Port, or a Select Hub or Select Port. Variables to
monitor include frames, bytes, collisions, frame allignment errors, CRC errors
or total errors. High and low watermarks may be set. While the trigger action
includes warning, warning and isolate (for hubs), or warning and disable (for
ports). When any threshold is exceeded, the agent will issue an alarm to the
network management station based on the selected action.
Event Activation - After initial event activation (crossing the high watermark),
the monitored variable must reach the low watermark before another event is
activated (again crossing the high watermark).
T: triggered N: not triggered
H
T
N
T
L
Notes: 1. The rate for all values is per one second.
2. Threshold entries are stored in the agent.
Troubleshooting
Refer to the Quick Installation Guide for a more detailed listing of troubleshooting
procedures. However, if you have trouble making a connection via SNMP
network management software, then please refer to the following section.
Network Management Access
To set thresholds:
1. Open the Threshold dialog box from the menu bar.
2. Select the system component (Type: System, Any Hub, Any Port, Select Hub,
Select Port). If you choose Select Hub or Select Port, then choose the Hub
ID or Port ID using the <F2> function key.
3. Select the variable to monitor (Variable: Frames, Bytes, Collisions,
Allignments, CRCs or Total Errors). If you choose Select Hub or Select Port,
then choose the variable Type using the <F2> function key.
4. Input an integer value for the low and high watermarks.
You can access the EtherHub-16mi+ from anywhere within the attached
network. However, you must first configure it with a valid IP address, subnet
mask, and default gateway. If you have trouble establishing a link to the SNMP
agent (with network management software such as AccView/Open), check to
see if you have a valid network connection. Then verify that you entered the
correct IP address from your location. Also, be sure the port through which
you are connecting to the hub has not been disabled. (See the Control Menu
on page 7.) If it has not been disabled, then check the network cabling that
1
runs between your management site and the stack.
5. Select the appropriate action (Action: INACTIVE, WARNING, WARNING &
ISOLATE for hubs, or WARNING & DISABLE for ports).
Pin Assignments for Serial Port Connections
6. Implement your settings by pressing the <F3> function key.
DB9 Serial Port Pin Description
Threshold Parameters - Hub/Port parameters include the following items:
9
The DB9 serial port on the back panel is used to connect the hub to a
management device. The configuration program can be accessed from a PC,
or from a remote location via a modem connection. You can use the
management port to configure port settings (e.g., enabled or disabled), or to
update device firmware. The pin assignments used to connect various device
types to the hub's management port are provided in the following tables.
DB9 Port Pin Assignments
Parameter
Description
Frame
Bytes
Collisions
The total number of frames.
The total number of bytes.
Multiple packets transmitted over a medium at the same time, making them
unintelligible.
Frame alignment errors occur when the received frame is a multiple of 8 bits.
This error occurs when the cyclic redundancy check for a frame is wrong.
(The cyclic redundancy check an error-checking algorithm used to indicate
frame reception errors.)
The total number of collisions, frame alignment errors and CRC errors.
Alignments
CRCs
Total Errors
10
EI A
Circuit
CCITT
Signal
CF
BB
BA
CD
AB
CC
CA
CB
CE
109
104
103
108.2
102
107
105
106
125
Description
Hub's
DB9 DTE
Pi n #
DCD (Data Carrie r De te cte d ) 1
RxD (Re ce ive d Data)
2
TxD (Transmitte d Data)
3
DTR (Data Te rminal Re ad y) 4
SG (Sig nal Gro und )
5
DSR (Data Se t Re ad y)
6
RTS (Re q ue st-to -Se nd )
7
CTS (Cle ar-to -Se nd )
8
RI (Ring Ind icato r)
9
PC DB9
DTE
Pi n #
1
2
3
4
5
6
7
8
9
Modem
DB25 DCE
Pi n #
8
3
2
20
7
6
4
5
22
Signal
Direction
DTE-DCE
<--------<----------------->
--------->
--------<----------------->
<--------<---------
11
EtherHub 1500 System
Advanced Reference Guide
DB9 Serial Port to RJ-45 Converter Connector Pin Assignment
Description
DTR (Data Te rminal Re ad y) 1
RxD (Re ce ive d Data)
2
TxD (Transmitte d Data)
3
SG (Sig nal Gro und )
4
RI (Ring Ind icato r)
5
CTS (Cle ar-to -Se nd )
6
RTS (Re q ue st-to -Se nd )
7
DCD (Data Carrie r De te cte d ) 8
DSR (Data Se t Re ad y)
NC
RJ-45 Pin
Mapping
4
2
3
5
9
8
7
1
6
DB9 PC's COM Port to RJ-45 Converter Connector Pin Assignment
Description
DTR (Data Te rminal Re ad y) 1
RxD (Re ce ive d Data)
2
TxD (Transmitte d Data)
3
SG (Sig nal Gro und )
4
RI (Ring Ind icato r)
5
CTS (Cle ar-to -Se nd )
6
RTS (Re q ue st-to -Se nd )
7
DCD (Data Carrie r De te cte d ) 8
DSR (Data Se t Re ad y)
NC
RJ-45 Pin
Mapping
6
3
2
5
9
7
8
1
4
DTR (Data Te rminal Re ad y) 1
RxD (Re ce ive d Data)
2
TxD (Transmitte d Data)
3
SG (Sig nal Gro und )
4
RI (Ring Ind icato r)
5
CTS (Cle ar-to -Se nd )
6
RTS (Re q ue st-to -Se nd )
7
DCD (Data Carrie r De te cte d ) 8
DSR (Data Se t Re ad y)
NC
RJ-45 Pin
Mapping
1
2
3
4
5
6
7
8
9
EH1502S
DB25
20
3
2
7
22
5
4
8
6
Hub's 9-Pin
Serial Port
CCITT Signal
<------ DCD ------<------ RXD -------------- TXD ------>
-------- DTR ------>
-------- SGND ----<------ DSR -------------- RTS ------>
<------ CTS ------<------ RI -------
Modem's 25-Pin
COM Port
8
3
2
20
7
6
4
5
22
Connection from Hub's 9-Pin Serial Port to PC's 25-Pin DTE Port
Hub's 9-Pin Serial Port
1 DCD
2 RXD
3 TXD
4 DTR
5 SGND
6 DSR
7 RTS
8 CTS
9 RI
EH1502
DB9
DB25 RS232 to RJ-45 Converter Connector Pin Assignment
Description
Connection from Hub's 9-Pin Serial Port to Modem's 25-Pin DCE Port
EH1502S
DB9
Null Modem
1
1
2
3
3
2
4
8
5
20
6
7
7
4
9
5
20
6
PC's 25-Pin DTE Port
8 DCD
3 TXD
2 RXD
20 DTR
7 SGND
6 DSR
4 RTS
5 CTS
22 RI
Optional Management Software
SW6120:
SW6121:
SW6122:
SW6122:
SW6130:
SW7300:
AccView EtherHub Manager for SunNet Manager
AccView EtherHub Manager for OpenView/Windows
AccView EtherHub Manager for OpenView/Unix
AccView EtherHub Manager for NMS
Network Mangement Support Modules for NMM
EtherHub 1500 Security Module
Connection from Hub's 9-Pin Serial Port to PC's 9-Pin COM Port
Hub's 9-Pin
Serial Port
1 DCD
2 RXD
3 TXD
4 DTR
5 SGND
6 DSR
7 RTS
8 CTS
9 RI
12
PC's 9-Pin
COM Port
------- DCD -------- 1
<----- TXD --------- 3
------- RXD ------> 2
------- DSR ------> 6
------- SGND ------ 5
------- DTR -------- 4
------- CTS ------> 8
<------ RTS -------- 7
------- RI ----------- 9
CCITT Signal
13