HP AdvanceStack 10BT Management Module, Installation and

HP AdvanceStack 10BT
Management Module
Installation and Reference Guide
© Copyright 1996 Hewlett-Packard Company
All Rights Reserved.
This document contains information which is protected by
copyright. Reproduction, adaptation, or translation without
prior permission is prohibited, except as allowed under the
copyright laws.
Publication Number
J3210-90001
Edition 1
August 1996
Applicable Product
HP J3210A Management Module
HP J3212A Switch Module
HP J3200A Switching Hub-12R
HP J3202A Switching Hub-24R
HP J3204A Switching Hub-24T
Hewlett-Packard Company
8000 Foothills Boulevard, m/s 5551
Roseville, California 95747-5551
http://www.hp.com/go/network_city
Disclaimer
The information contained in this document is subject to
change without notice.
HEWLETT-PACKARD COMPANY MAKES NO WARANTY
OF ANY KIND WITH REGARD TO
THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE. HewlettPackard shall not be liable for errors contained herein or for
incidental or consequential damages in connection with the
furnishing, performance, or use of this material.
Hewlett-Packard assumes no responsibility for the use or
reliability of its software on equipment that is not furnished
by Hewlett-Packard.
Warranty
A copy of the specific warranty terms applicable to your
Hewlett-Packard products and replacement parts can be
obtained from your HP Sales and Service Office or
authorized dealer.
Contents
1 Installing the Management Module
Installation Steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Removing the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
2 Management Module Features
Port Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Increasing Throughput with HP Switching Hubs . . . . . . . . . . . . . . . . . 2-2
Communication Between Hubs When Users Are on
the Same Segment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Communication Between Segments . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Displaying Segment Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Example of using the Segment Display Button . . . . . . . . . . . . . . . 2-5
Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Configuring, Diagnosing, and Troubleshooting the
Network with Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Resetting the Stack with Management . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Redundant Management in a Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Advanced Management: RMON and EASE Support . . . . . . . . . . . . . . 2-8
RMON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
EASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
3 Configuring the Switching Hubs in Software
Two Network Management Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
ASCII Console Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
HP AdvanceStack Assistant Features . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Connecting to the ASCII Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Directly, Using A Serial Cable and a Terminal . . . . . . . . . . . . . . . . . . . 3-3
Remotely, Using Telnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Remotely, Using a Modem and a Terminal . . . . . . . . . . . . . . . . . . . . . . 3-5
iii
Using the Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Port Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Segment Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
4 Removing A Hub From a Stack
Number of Hubs Allowed In the Stack . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Reinserting a Hub into a Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Effect on Network Connectivity When a Hub
is Removed from a Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
5 Troubleshooting
IP Configuration Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Testing the Hub Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Possible Failure of a Redundant Management Module . . . . . . . . . . . . 5-4
Testing the Hub’s Ports and the Links . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Clearing a Password for the ASCII Console . . . . . . . . . . . . . . . . . . . . . 5-6
HP Customer Support Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
A Cables and Connectors
Recommended Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
RS-232 Connector and Cable Pin-Outs . . . . . . . . . . . . . . . . . . . . . . . . . A-2
A Minimum Cable Pinout for ASCII Console Connection . . . . . . . . . A-3
RS-232 Modem Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
B Specifications
C Modem Configuration
iv
D Network Addressing
Communication Between the Hub and
Network Management Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1
IPX Addressing for Novell Netware . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
IP Addresses for IP and Non-IP Networks . . . . . . . . . . . . . . . . . . . . . D-3
Setting the IP Address for a Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3
Using Bootp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4
The Bootp Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4
Bootp Table File Entries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-4
E Backup Links
Examples of Backup Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1
How the Backup Function Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-2
Configuring a Backup Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-4
Configuration/Installation Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . E-5
Identifying the Backup Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-5
Indications of Backup Link
Activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-6
Reactivating the Primary Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-6
Index
v
HP Customer Support Services
How to get the latest software/agent firmware
You can download the following:
HP Management Module firmware: j3210a.exe
from the HP BBS, HP FTP Library Service, CompuServe, and the World Wide Web.
After you download the file, extract the file by typing: filename /x. For example,
j3210a.exe /x
HP BBS
Set your modem to no parity, eight bits, 1 stop bit, set speed up to 14400 bps, and with
your telecommunication program (e.g., Windows Terminal) dial (208) 344-1691 to get
the latest software for your HP networking product.
HP
1.
2.
3.
4.
5.
FTP Library Service
FTP to Internet IP Address — ftp ftp.hp.com.
Log in as anonymous and press [Return] at the password prompt.
Enter bin to set the transfer type.
Enter cd /pub/networking/software.
Enter get filename to transfer the file to your computer, then quit.
CompuServe
1. Login to CompuServe.
2. Go to the “hp” service.
3. Select “HP Systems, Disks, Tapes, etc.”
4. Select “Networking Products” library.
5. Download filename then quit.
World Wide Web
http://www.hp.com/go/network_city
Select the “Support” section.
From this web site, you can also download information on the HP Switching Hubs and
HP AdvanceStack Assistant. If you have a growing network, download the Designing
HP AdvanceStack Workgroup Networks Guide or call 1-800-752-0900 to receive a copy
through mail.
(over for more services)
✂
Obtain the latest console code (j3210a.exe) from
HP FTP Library:
ftp ftp.hp.com
World Wide Web: http://www.hp.com/go/network_city
HP BBS:
(over)
Perforate
(208) 344-1691
HP FIRST Fax Retrieval Service
HP FIRST is an automated fax retrieval service that is available 24 hours a day, seven
days a week. HP FIRST provides information on the following topics:
■
Product information
■
Troubleshooting instructions
■
Technical reviews and articles
■
Configuration information
To access HP FIRST, dial one of the following phone numbers:
Location
Phone Number
U.S. and Canada Only
Dial 1 (800) 333-1917 with your fax machine or touch-tone phone
and press 1.
Outside the U.S. and Canada
Dial 1 (208) 344-4809 from your fax machine and press 9.To
receive a list of currently available documents, enter document
number 19941. The information you requested will be sent to
you by return fax.
HP Network Phone-In Support (NPS)
In addition to the above services, the HP Network Phone-In Support (NPS) service
provides expert technical assistance for U.S.A. customers through an NPS contract or
at an hourly rate (1-800-790-5544) Monday through Friday, 5 am to 6 pm, Pacific Time.
You may also contact your HP Authorized Reseller or the nearest HP Sales and Support
Office to purchase an NPS contract.
✂
CompuServe:
Go to the “hp” service.
Select HP systems, etc.
Select Networking Products.
Download the file.
Network Phone-In 1-800-790-5544
Support (hourly):
Perforate
1
Installing the Management Module
Installation Steps
The HP J3210A AdvanceStack 10BT Management Module is installed into the
front of the HP AdvanceStack Switching Hub. Hereafter, the module will be
called the Management Module.
Management Module
Active
Base MAC Address
Follow these steps to install the module:
1.
Verify you have these parts:
•
Management Module
•
HP AdvanceStack Assistant for Windows CD-ROM kit
•
This manual-HP AdvanceStack Management Module Installation and Reference Guide (J3210-90001)
•
Serial cable (5182-4794)
•
Optional: 8 MB SIMM memory upgrade-HP D2691A. The SIMM
memory upgrade enables the five remaining RMON groups. It can
be purchased from your HP-authorized dealer or reseller.
1-1
Installing the Management
Module
Installing the Management Module
Installation Steps
Caution
2.
Static electricity can severely damage the sensitive electronic components on the module. When installing the module in your hub or when
inserting a SIMM onto the module, follow these procedures to avoid
damage from static electricity:
•
Handle the module or SIMM by its edges and avoid touching the
components and the circuitry on the board.
•
Equalize any static charge difference between your body and the
hub by wearing a wrist static-protector strap and attaching it to
the hub's metal body, or by frequently touching the hub's metal
body while you are installing the module.
3.
Before installing the Management Module, unplug your hub or stack of
hubs from the power source.
4.
If there is an Extender Cable, remove the Extender Cable from the slots
marked IN and OUT.
5.
If you have bought the memory upgrade package in order to support five
additional RMON groups, then you need to install the SIMM before
putting the module in the hub. The SIMM can be installed in one orientation only. Follow the instructions in the illustration below to install the
SIMM correctly:
1) Insert SIMM here at a 45 degree angle.
2) Press down the SIMM so that it
is parallel to the Management Module board.
1-2
Management
Module
bulkhead
Installing the Management Module
Installation Steps
6.
cover plate
Loosen these
screws
7.
Insert the Management Module into the hub. Leading with the hub
connector edge, line up the sides of the module with the rails on the sides
of the hub’s slot. Then push the module into the slot until it is firmly
seated in the connector in the back of the slot.
Management Module
Active
Base MAC Address
8.
Tighten the two screws that hold the module in place. Be careful not to
overtighten the screws.
9.
If you are installing a second Management Module for redundancy, repeat
steps 1-8.
10. Reconnect the Extender Cable if there is one. The hub at the top of the
stack should only have a cable connected in the OUT port so that stack
order is accurately displayed in HP AdvanceStack Assistant and the
ASCII console.
1-3
Installing the Management
Module
Unscrew the two captured screws holding the cover plate to the hub’s
Management Slot and remove the cover. Note that the screws will release
outward when unscrewed far enough. Do not unscrew them completely
from the cover plate.
Installing the Management Module
Installation Steps
Installing the Management
Module
11. Turn on the power to the hub with the Management Module and then
provide power to the rest of the hubs in the stack. Provide power by
plugging in the power cord to the hub. During power-on, the following
occurs:
At Power On
Hub begins power-on self test followed by the module’s self
test. Ports are temporarily disabled until the Management
Module configures the ports.
During Self-Test
All Module LEDs are on. The hub and module self-tests require
about 10 seconds total. If a SIMM is added, the self-test requires 30 seconds’ time. For every hub in the stack add about
2 seconds to the self-test time. A stack of eight hubs will take
about 20 seconds to complete.
After Self-Test
All of the module LEDs turn off except the Active LED for the
primary module. The redundant module will have no LEDs on.
If the Fault LED is on, refer to chapter 5, “Troubleshooting” in this guide.
1-4
Installing the Management Module
Installation Steps
Installing the Management
Module
You have now completed installation and verification of the module. The
hardware features of this module are as follows:
Active
Base MAC Address
LED or
Button
Status
Description
Active
ON
Specifies this module is the primary module if a second module is
in the stack.
OFF
This module is the redundant module in the stack and will take over
if the primary module fails.
Fault
ON
The Module has experienced a failure, possibly because of incorrect installation of the SIMM module or incorrect installation into
the hub.
Reset
-
Resets all hubs and modules in the stack.
Segment
Display
-
Lights the Segment number and Port LEDs to show which nodes are
on a segment. Segment number is lit. (If you hold this button down
for eight seconds, all Segment numbers are lit on the Management
Module and you will clear the password to the ASCII console.)
1, 2, 3, 4
ON
Number of segment being displayed.
To configure IP/IPX for the Management Module, see Appendix D, “Network
Addressing”.
1-5
Installing the Management
Module
Installing the Management Module
Removing the Module
Removing the Module
The module is removed from the hub by reversing the installation steps
described earlier in this document. To remove the module, follow these steps:
1.
Remove power from the hub by unplugging the power cord.
2.
Remove the Extender Cable(s).
3.
Unscrew the two captured screws holding the module.
4.
Pull the module out of the slot.
5.
Replace the slot with the Management Slot cover plate and reinstall the
Extender Cable(s). You are finished when your hubs appear like this
illustration:
Cover plate
Warning
1-6
Replace the cover plate over the slot using the two screws that hold it in place.
Be careful not to overtighten the screws. When using the hub, the cover plate
must always be installed. This is required not only for safety, but also to ensure
proper hub cooling.
2
Management Module Features
With the Management Module, you can now address the problems of a busy
and growing network with the following features:
■
Port Switching. Gives you the ability to move ports onto one of four
network segments to increase network throughput
■
Management. Ability to configure, diagnose and troubleshoot network problems using two software interfaces: HP AdvanceStack
Assistant for graphical in-band network connections; and a text-based
application, called the ASCII console, for out-of-band management
port access.
■
Redundant Management. If one management module fails, another
one in the stack takes over. This means no network downtime.
■
Advanced SNMP Management. Using RMON and EASE to diagnose
network problems to help optimize network performance.
Only one Management Module is needed to manage and configure an entire
stack of hubs. A stack has a maximum of eight hubs. These features are
described in this chapter.
2-1
Management Module Features
Port Switching
Port Switching
}
Management Module
Features
Seg
m
Seg ent 1
m
Seg ent 2
me
Seg nt 3
men
t4
Within each Switching Hub, there are four distinct network segments, as if
there were actually four hubs in one. These segments run through an entire
stack of hubs through the Extender Cable. Port switching is the ability to move
ports from one segment to another through software rather than physically
moving cables in the wiring closet.
Extender Cable
Note
In previous hub documentation, HP has used the term “segmentation” and
“auto-segmentation” to mean partitioning. In this manual and future manuals,
segmentation means dividing a hub into different collision domains and
partitioning means that a port has been temporarily disabled because of
excessive collisions.
Increasing Throughput with HP Switching Hubs
HP Switching Hubs have four segments (or collision domains) which you can
move ports to by using the ASCII console or HP AdvanceStack Assistant.
Every user is placed on segment 1 by default. If the network becomes congested and network performance suffers, the Management Module can be
used to move ports onto the three other segments in the stack. (Note that if
you have an HP Switch Module in the stack, it can automatically distribute
users across all segments on power up.)
2-2
Management Module Features
Port Switching
Communication Between Hubs When Users Are on
the Same Segment
Users can communicate with each other on the same segment in the stack
through the Extender Cable. The following example shows two hubs with
users on segment 2.
Segments Example
Segment 2 (Engineering)
Hub B
Segment 2 (Engineering)
Users on Hub A and Hub B can talk to each other because they are on the same segment.
Notice that the users can be connected to any hub and to any port, contiguous or
noncontiguous.
2-3
Management Module
Features
Hub A
Management Module Features
Port Switching
Communication Between Segments
Communication between the segments can be achieved through:
■
■
■
multiple LAN adapters in the server
switch
router
For example, add an external switch or Switch Module to your stack if you
want users (for example) on segment 2 to talk to users on segments 1 and 3.
Communicating Between Segments
Management Module
Features
Segment 1 (Finance): 1, 4, 5
Hub A
Segment 3 (Marketing): Port 10, 12
Hub B
Segment 2 (Engineering): Ports 11, 12
Switch Module in this hub
All users connected to these hubs communicate across the switch.
Displaying Segment Information
After users are distributed across segments, you can display segment information in software or by using a button on the Management Module called the
Segment Display button. This button displays which ports are on the four
connected segments. The Segment Display button changes the port LEDs to
reflect which nodes are on each segment instead of status.
.
Port LEDs on Segment 1, 2, 3, and 4 turn on sequentially
each time you press the Segment Display Button.
Active
Base MAC Address
Segment Display button
2-4
Management Module Features
Port Switching
Note
If you have not moved ports to segments 2-4, then port LEDS will be lit after
you press the Segment Display button once. This is because all ports are on
segment 1.
Example of using the Segment Display Button
Example: Network administrator wants to know which ports
Ports 1, 4-8 are now lit.
are on Segment 2.
Active
Base MAC Address
Press Segment Display button twice. Segment 2 LED is lit.
.
Remember that if you have two Management Modules installed in the stack,
press the Segment Display button on the active Management Module, rather
than the redundant one.
2-5
Management Module
Features
To discover which nodes are on segment 1, press the Segment Display button
once. The “1” LED on the Management Module is lit and the ports on segment
one are lit. Press the Segment Display button again and the ports on segment
two are lit, and so forth. After 60 seconds, the port LEDs go back to displaying
link status information rather than segment information. If you press the
Segment Display button a fifth time, the LEDs will also go back to displaying
link status information also.
Management Module Features
Management
Management
When you install the Management Module, it has four MAC addresses. One
MAC address is for each of the four segments. The Management Module shows
the base MAC address for segment 1. Add one to this address to get the MAC
address for segment 2, add one more for segment 3, etc. The four MAC
addresses are listed in HP AdvanceStack Assistant and the ASCII console’s
General Status option:
Management Module
Features
General Status
System Name:
Marketing
System Contact: Susan
System Location: 3rd floor
Download Version: ROM A.01.04. EEPROM A.01.15.
System Up Time: 0 Days, 16:34:32 (HH:MM:SS)
Device Fault:
None Detected
Device with Active Management Module: finance hub
Type: HP J3200A AdvanceStack 10BT Switching Hub-12R
Stack Position: 1
MAC Addresses
Segment 1: 080009-ced5d8 Segment 2: 080009-ced5d9
Segment 3: 080009-ced5da Segment 4: 080009-ced5db
SNMP Module Security Information
No violation
Change any of the system information? (Y/[N]):
Each hub does not need a MAC address because the MAC addresses are for
the segments in the entire stack of hubs.
Configuring, Diagnosing, and Troubleshooting the
Network with Management
Before the Management Module was installed, there was no software interface
to determine why ports were disabled, why collisions and activity rates were
high, and why a user could not communicate with a device.
With the Management Module’s two included software interfaces, you can find
out which nodes are “top talkers” and are causing congestion on the network,
move some of those users to another segment, and monitor traffic in a
graphical format. These software features are described in chapter 3.
2-6
Management Module Features
Management
Resetting the Stack with Management
If you install an optional Management Module, its reset button resets the entire
stack of hubs. The hubs are reconfigured and counters are reset to zero. This
can also be done through the ASCII console or HP AdvanceStack Assistant.
From the ASCII console, you can also change the hub back to its default
settings. The default settings are all ports enabled, security violations cleared,
and all ports are placed back on segment 1.
The rest of the management features are described in chapter 3.
Redundant Management in a Stack
Active Management Module (has lowest MAC address so Active
LED is lit.)
Redundant Management Module
If the second Management Module takes over because the first one failed, see
chapter 5, “Troubleshooting.”
2-7
Management Module
Features
Two Management Modules in a stack provide you with redundant management so that if one module fails, the other module will take over. To identify
the hub with the Management Module acting as primary, the Active LED is lit
on the Management Module. After you install the second Management Module,
you should specify which one is primary through the ASCII console or through
HP AdvanceStack Assistant. (If you do not select a module, the module with
the lowest MAC address is active.).
Management Module Features
Advanced Management: RMON and EASE Support
Advanced Management: RMON and
EASE Support
The Management Module supports RMON (Remote Monitoring) and EASE on
all four segments. This allows for troubleshooting and optimizing of your
network.
RMON
Management Module
Features
The following RMON groups are supported across all four segments and the
Switch Module simultaneously:
■
Ethernet statistics
■
alarm
■
history
■
event
You can access the Ethernet statistics, alarm, and event groups from
HP AdvanceStack Assistant.
By adding an optional memory upgrade (HP D2691A), you enable the remaining 5 RMON groups. The other 5 groups are Host, Host Top N, Matrix, Filter,
and Packet Capture. They will be available on one segment chosen by the user.
Use an RMON-compliant application such as ProbeView for full RMON support.
EASE
EASE (Embedded Advanced Sampling Environment) is a network monitoring
and troubleshooting tool which analyzes traffic from a network-wide perspective. EASE notifies the user about trouble and identifies the end node at fault.
That information can be used to set up RMON to study the problem more
closely, if desired. Because it is based on statistical sampling instead of
RMON’s all-inclusive collection schema, EASE lessens the load on devices and
network bandwidth. Thus, EASE can monitor all 4 hub backplane segments
without the optional memory upgrade. See the Traffic Monitor portion of
HP AdvanceStack Assistant CD-ROM for more information on using EASE.
2-8
3
Configuring the Switching Hubs in Software
Two Network Management Interfaces
The Management Module Pack includes two software user interfaces through
which you can manage, configure, and troubleshoot your stack of hubs. The
two interfaces are:
■
HP AdvanceStack Assistant (formerly called HP Interconnect
Manager)
■
ASCII console
Depending on your hardware and management needs, choose which application best fits your needs. HP AdvanceStack Assistant runs on Windows 95 or
NT 3.51 or later and does not require HP OpenView. The application works
over the network. You can also manage the hubs with other network management platforms using MIB browsers.
ASCII Console Features
The text-based application is accessed through an ASCII terminal emulator
program. Use either Telnet, a modem, or a direct connection by using a serial
cable to the RS-232 port. Both HP AdvanceStack Assistant and the ASCII
console allow you to do the following:
■
display port and segment counter statistics
■
view port status
■
set IP/IPX configuration
■
test network connectivity
■
copy configuration from one hub to another
■
set authorized managers and community names
■
set password (ASCII console only)
■
specify port switching (moving a port from one segment to the other
in software instead of moving cables in the wiring closet)
(continued on next page)
3-1
Configuring the Switching Hubs in Software
Two Network Management Interfaces
■
reset a specific hub to factory defaults (ASCII console only)
■
enable and disable ports
■
display security violations and clear them
■
create backup link configuration
■
select the active management module (useful when using redundant
management)
HP AdvanceStack Assistant Features
Configuring the Switching
Hubs in Software
HP AdvanceStack Assistant is an SNMP-compliant network management
product that gives you the features above and these additional management
features:
■
manage multiple HP hubs and other HP network devices
■
automatically generate a graphic display of the network map
■
gather network traffic statistics
■
display subnet topology views of SNMP-based HP devices
■
launch Closeup Views for HP hub, switch, and bridge management
■
set up multilevel, advanced per-port security
■
save the stack configuration to your hard drive as a backup
■
perform EASE traffic monitoring
■
specify VLAN support
■
use RMON trap configuration/graphing
To manage a Switching Hub with HP AdvanceStack Assistant over an IP
network, you must first set the IP address for the hub by following the steps
in appendix D, “Network Addressing”. HP AdvanceStack Assistant software
and documentation are on a CD-ROM that is included with the Management
Module Pack. Please refer to the CD-ROM when using that application.
The rest of this chapter describes how to connect to the ASCII console and
the ASCII console features in detail.
3-2
Configuring the Switching Hubs in Software
Connecting to the ASCII Console
Connecting to the ASCII Console
You can begin a console session with the hub in the following ways:
■
directly, using a serial cable and a terminal (or a PC using a terminal
emulator)
■
remotely, using Telnet
■
remotely, using a modem and a terminal/PC
The Management Module supports a single console session only. If a console
session is already running, a second console session can override the first
console session.
Directly, Using A Serial Cable and a Terminal
To directly connect a terminal to a hub, follow these steps:
Connect an ASCII terminal, or a PC emulating an ASCII terminal, to the
RS-232 port using the included RS-232-C “null modem” cable. (For pinouts and recommended cables see appendix A, “Cables and Connectors”.)
2.
Switch on the terminal’s power (or switch on the PC’s power and start
the terminal emulation program). Configure the terminal for 8 bits per
character, 1 stop bit, no parity, Xon/Xoff handshaking, and a baud rate
of 57600 to 1200.
3.
Press [Return] several times for the => or Password prompt. The baud rate
for communication between the hub and the terminal is sensed automatically when you press [Return].
3-3
Configuring the Switching
Hubs in Software
1.
Configuring the Switching Hubs in Software
Connecting to the ASCII Console
Remotely, Using Telnet
The Management Module support a Telnet console session. Your Telnet
syntax depends on your TCP/IP software or your terminal server. By default,
Telnet is enabled. You can disable Telnet by using the “Connection Configuration” screen in the ASCII console.
To establish a Telnet session, follow these steps:
1.
Verify that the stack you are accessing has an HP Management Module
installed, that it has been configured with an IP address, and that it is
accessible from your PC or workstation.
2.
In Windows NT or HP AdvanceStack Assistant, run the Telnet application
and select Remote System from the Connect menu and type the IP
address of the hub. For example:
telnet 192.1.1.1
or
telnet your_hub
(Your Telnet syntax depends on your TCP/IP software or your terminal
server. You can use a system name if you have name resolution such as
DNS.)
Configuring the Switching
Hubs in Software
3.
3-4
To end the Telnet session, select Logout from the main menu. Or use your
Telnet application’s command to close or quit the Telnet session.
Configuring the Switching Hubs in Software
Connecting to the ASCII Console
Remotely, Using a Modem and a Terminal
Use two full-duplex, asynchronous (character-mode) modems only. A list of
tested modems and their initialization strings are in appendix C, “Modem
Configuration”. Use the following illustration to set up a modem connection
to a Switching Hub with a Management module
RJ-11 telephone
cable
“straight-through”
modem cable
Hub with Management Module
External “remote” modem
“straight-through”
modem cable
PC running
an ASCII terminal program
or dumb terminal
RJ-11 telephone
cable
After you have set up your modems, make sure the terminal and modems are
functioning properly, then establish the link between the terminal's modem
and the hub’s modem according to the modem instructions.
If you are using the ASCII console, press [Return] several times for the => or
Password prompt. The baud rate for communication between the hub and the
modem is set automatically when you press [Return].
3-5
Configuring the Switching
Hubs in Software
External “local” modem
(You can also use an internal modem.)
Configuring the Switching Hubs in Software
Using the Console
Using the Console
The console session starts with a display similar to the following (the actual
version numbers may be different):
HP J3210A Switching Hub 10BT Management Module
ROM A.01.00
EEPROM A.01.00
HW A.01.00
Use HP AdvanceStack Assistant commands for
graphical hub configuration.
Type MENU to access the ASCII menu system,
or HE or? for help on console commands.
After you login, type MENU and the following menu appears:
HP Switching Hub Management Console
Configuring the Switching
Hubs in Software
___________Main Menu _______
1. Hub Status and Counters...
2. IP/IPX Configuration...
3. Network Connectivity Tests...
4. Port/Segment Configuration...
5. Managers/Password Change...
6. Security Configuration/Information...
7. Connection Configuration...
8. Configuration/Reset Controls...
9. Switch Controls...
0. Lookout
Enter Selection =>
The menu system is easy to navigate and use. Each option is described on the
next page.
3-6
Configuring the Switching Hubs in Software
Using the Console
Option
Description
Hub Status and Counters
Displays counters, system name, system contact, system
up time, segment MAC addresses, hub port status. See the
tables on the next two pages for segment and port
counters.
IP/IPX Configuration
Enable/disable IP/IPX for each segment, and set addresses. For an IP address, see the instructions in appendix D,
“Network Addressing”.
Network Connectivity Tests
Allows you to perform IPX, link, and ping tests.
Port/Segment Configuration
Disable or enable ports and set up backup links. Assign
ports to a segment, isolate or connect a segment. There
are 4 connected segments per stack and up to 32 isolated
segments per stack.
You can isolate up to 32 segments per stack. Note that each
isolated segment can never communicate with any other
hub because it is isolated from the Extender Cable.
Configure community name, set password, assign authorized managers, select the active Management Module.
Security Configuration/Information
View and clear security violations or turn off port security.
(To set port the three levels of security, use HP AdvanceStack Assistant. The three levels are documented in the
online help and on the CD-ROM.)
Connection Configuration
From this option, you can enable or disable Telnet connections and reset the stack. You can also connect to the
Expansion Slot Module if the module has a separate ASCII
console interface. (The Switch Module’s interface is not
separate. If a Switch Module is in the stack, new Switch
commands are automatically added to the Management
Module’s ASCII console.)
Configuration/Reset Controls
Reset the stack, give a name to a hub, set the hub back to
factory defaults, and copy configuration from one hub to
another.
Switch Controls
(Only appears if an HP J3212A AdvanceStack Switch Module is installed in the stack.) Provides statistics for the
switch ports and configuration options.
3-7
Configuring the Switching
Hubs in Software
Managers/Password Change
Configuring the Switching Hubs in Software
Using the Console
Port Counters
Configuring the Switching
Hubs in Software
The port counters are from the IEEE 802.3 Repeater Management Specification. They are described below:
Counter Name
Definition
Valid Range
Corrective Action if over Valid
Range
Good Packets
Number of error-free packets received.
Less than 4000
packets per second.*
Decrease the traffic level by using a switch to segment the network.
Collisions
Number of times the port was involved
in a collision. A single collision will be
counted by all ports involved, so the total collision counters may be less than
the sum of the port counts.
Less than 2 times
the number of good
packets.
Decrease the traffic level by using a switch to segment the network
Late Collisions
Number of collisions which went undetected by the sending end node.
Less than.1% of
good packets.
Too many repeaters between
end nodes, or cables which are
too long, or bad cable.
CRC/Alignment
Errors
Number of packets transmitted incorrectly and number of incorrectly aligned
packets.
Less than.1% of
good packets.
This counter indicates faulty cabling.
Giant Packets
Number of packets larger than 1518
bytes.
Less than.1% of
good packets.
Update the LAN adapter drivers
on all nodes connected to the
port.
Broadcast Packets
Number of packets addressed to everyone in the network. These packets consume CPU resources from each node on
the network.
Less than 200 packets per second.*
Decrease the number of nodes
in an IP subnet or IPX network
by using more routers. Consult
Novell Netware documentation
on how to reduce broadcasts in
an IPX network.
Replace bad cables and/or
transceivers if problems persist.
Rarely, you may have a defective LAN adapter.
*The port counters in the ASCII console show totals, not number of packets per second. For the Good Packets and
Broadcast packets, display counters twice over a period of one section to see if the value falls in the valid range.
3-8
Configuring the Switching Hubs in Software
Using the Console
Segment Counters
The Segment counters are from the RFC 1757 RMON MIB Specification. Their
definition of counters is different than IEEE 802.3 Repeater Management
Specification as describe din this table.
Definition
Valid Range
Corrective Action if over Valid
Range
Good/Bad Packets
Number of error free and errored packets.
Less than 4000 packets per second.*
Decrease the traffic level by
using a switch to segment the
network.
Total Octets
Number of errored and error free bytes
received. Shows utilization of the network. Ethernet capability is 1.25 megabytes per second.
Less than 500,000
bytes per second
sustained (not just at
the peak)
Decrease the traffic level by
using a switch to segment the
network.
Broadcast Packets
The number of packets addressed to everyone on the network. These packets
consume CPU resource from each node
on the network.
Less than 200
packets per second.*
Decrease the number of nodes
in an IP subnet or IPX network
by using more routers. Consult
Novell Netware documentation on how to reduce broadcasts in an IPX network.
Multicast Packets
Number of packets sent to two or more
nodes on the network, but not to broadcast.
Less than 4000 packets per second.*
Segment network and configure switches to filter unnecessary multicast packets.
Collisions
Number of times the port was involved
in a collision. A single collision will be
counted by all ports involved, so the total
collision counters may be less than the
sum of the port counts.
Less than 2 times the
number of good
packets.
Decrease the traffic level by
using a switch to segment the
network
CRC Alignment
Errors
Number of packets transmitted incorrectly and number of incorrectly aligned
packets.
Collisions +
fragments should be
less than 2 times the
# of packets
Segment the network.
Update the LAN adapter drivers.
Fragments
Number of collisions on a distant segment in the network.
Collisions +
fragments should be
less than 2 times the
# of packets
Segment the network.
Update the LAN adapter drivers.
Jabbers
Number of error packets that are longer
than 20 milliseconds in duration.
Less than.1% of
packets
Replace defective hardware
such as the transceiver.
Replace bad cables and/or
transceivers if problems persist. Rarely, you may have a
defective LAN adapter.
*The segment counters in the ASCII console show totals, not number of packets per second. For the Good/Bad Packets,
Multicast, and Broadcast packets, display counters twice over a period of one section to see if the value falls in the
valid range.
3-9
Configuring the Switching
Hubs in Software
Counter Name
4
Removing A Hub From a Stack
This chapter covers the following:
■
number of hubs in a stack
■
reinserting a hub into an existing stack
4-1
Removing A Hub From a Stack
Number of Hubs Allowed In the Stack
Number of Hubs Allowed In the Stack
The maximum size of a hub stack is eight hubs. If more than eight hubs are in
the stack, management software (HP AdvanceStack Assistant and the ASCII
console) will disable ports on that hub. Also, the Extender Cable connection
on the ninth hub will be disabled, so that the ninth hub is not allowed to
communicate with the stack. No configuration will be possible on extra hubs
in a stack.
1
2
3
Extender Cable
4
5
6
7
8
This hub was powered on last. Ninth hub is not allowed to
communicate with the stack because maximum stack size
has been exceeded.
Removing A Hub From a
Stack
The ninth hub is the last hub powered on. Note that if all nine hubs are powered
on simultaneously, then any one of the nine hubs in the stack could be ignored.
Remove the ninth hub so that communication can resume between all of the
hubs.
4-2
Removing A Hub From a Stack
Reinserting a Hub into a Stack
Reinserting a Hub into a Stack
If a removed hub is re-inserted back into the same stack, the Management
Module remembers all of the configuration for that hub. The reinserted hub
will quickly reconnect to the network and this hub will automatically be
reconfigured to the same port settings it had before it was removed.
Management Module
Removed hub reinserted into the stack
keeps configuration.
Effect on Network Connectivity When a Hub
is Removed from a Stack
Network connectivity and network management flow through the Extender
Cables which connect each hub together in the stack. If you need to remove
a hub from a stack, the type of network connectivity lost during removal
depends on which hub was removed:
4-3
Removing A Hub From a
Stack
Not Top or Bottom Hub: If you disconnect a hub in the middle of the stack
by disconnecting the Extender Cables, network connectivity for the stack is
off for the disconnected hub, and on for the connected hubs. However, the
power remains on. Traffic between the two halves of the stack is resumed
when the Extender Cables are reattached.
Removing A Hub From a Stack
Reinserting a Hub into a Stack
Top or Bottom Hub: If you disconnect a hub at the top or bottom of the stack,
then the hubs in the middle will still communicate.
Stack Example 1
Stack Example 2
Top hub removed
Management Modules
A middle hub removed.
Bottom hub removed
All hubs in the middle can communicate
with each other.
Top hub can’t communicate with
rest of stack. Remove an Extender
Cable and connect hubs together.
Removing A Hub From a
Stack
If the removed hub has a Management Module, move the Management Module
into another hub in the stack following the removal and installation instructions in chapter 1.
4-4
5
Troubleshooting
This chapter describes how to troubleshoot your Management Module and
how to troubleshoot your stack of hubs for cabling problems. This chapter
covers these topics:
■
using the problem/solution table
■
IP configuration errors
■
diagnostic tests
■
clearing a password for the ASCII console
Use the following table to diagnose the problem with your Management
Module:
Problem
Solution
How do I reset the stack of hubs?
Either:
Push the reset button on the primary
Management Module.
Select stack reset from the ASCII console or
HP AdvanceStack Assistant.
The Segment Display button doesn’t
light up the 1, 2, 3 or 4 Segment LEDs.
You probably have two Management Modules
installed and you are pushing buttons on the
backup Management Module. Press the
buttons on the module where the Active LED is
on.
None of the Management Module LEDs
are on.
Either:
- You are looking at the backup Management
Module. This is normal.
- Module is loose. Make sure the Module is fully
inserted and screws are tightened.
The Segment Display button lights up
all of the port LEDs on Segment 1.
All of your users are on the same segment. If
desired, move users to the other segments by
using HP AdvanceStack Assistant or the ASCII
console.
I pushed the Segment Display button.
Where do I look to see which ports are
on segment 1?
Instead of the port LEDs showing link status, the
port LEDs for a selected segment will be lit.
5-1
Troubleshooting
Troubleshooting
Problem
Solution
I am through looking at segment
information. I want to see if each cable
is connected correctly.
Either:
- After you press the Segment Display button,
wait 60 seconds and then link status information
will show in the port LEDs.
-Press the Segment Display button until all
Segment Display LEDs (1, 2, 3, and 4) are off.
I can’t remember the console password
to configure and diagnose the hubs.
While the hub is on, press the Segment Display
button on the Management Module for 8
seconds until the Segment Display LEDs (1, 2, 3,
4) are on solid. Then release. Then specify a new
password to keep access to the hub restricted.
(Steps are described at the end of this chapter.)
A user can’t send data to another user.
If the users are on different segments, add a
Switch Module or external switch so that the
users can communicate together.
Otherwise, use the Connectivity tests in the
ASCII console or in HP AdvanceStack Assistant
to test the cabling. The tests are described in
this chapter.
5-2
I can only configure the hub in which
the Management Module is installed.
How do I configure the others in the
stack?
Each hub needs to be connected to the next hub
using the Extender Cable.
The Switch Module Fault LED is on.
Verify the Management Module is in the same
stack. If it is, make sure the switch module is
firmly seated. If problem persists, the model has
an internal failure. Contact your HP authorized
dealer or reseller.
The Security LED is flashing. How do I
get it to stop?
Use the ASCII console or HP AdvanceStack
Assistant to view the intruder log and clear the
security violations.
Troubleshooting
IP Configuration Errors
Solution
I think the active Management Module
isn’t working anymore because the
Fault LED is on. I don’t have a redundant
Management Module in the stack.
What do I do?
Attempt to reset the stack by pressing the reset
button on the Management Module.
If the problem still occurs, download a current
or new firmware version from the web, BBS, or
CompuServe. See the perforated card at the
beginning of this manual for more instructions.
If that doesn’t work, call HP for a replacement
module. When the module arrives, only power
down the hub with the faulty Management
Module. The rest of the hubs in the stack will
retain their configuration as long as they
continue to receive power.
If the answer to your question is not in this table, read the IP configuration
and diagnostic test information on the next pages.
IP Configuration Errors
If you are using IP communications, make sure your IP configuration parameters are set properly for all segments in use. Use the ASCII console’s IP
Configuration function as described in chapter 3. Incorrect IP configuration
on the hub will prevent it from communicating with the network management
station, and may cause other network problems.
In particular, make sure you provide the hub with a unique IP address, and
that you use the correct subnet mask for your network. See appendix D,
“Network Addressing”, for more information.
5-3
Troubleshooting
Problem
Troubleshooting
Diagnostic Tests
Troubleshooting
Diagnostic Tests
The HP AdvanceStack Assistant and ASCII console provide tests and indicators that can be used to monitor the hub and its network connections.
Testing the Hub Only
If you believe that the hub is not operating correctly, remove and reinsert the
power cord for that hub. This procedures will cause the hub to complete its
power-on self-test. If any error conditions exist in the hub, the LEDs should
display the condition. See the Switching Hubs Reference manual to interpret
the LED display.
Possible Failure of a Redundant Management Module
If the second Management Module takes over because the first one failed,
follow these steps:
■
rediscover the network if you are using HP AdvanceStack Assistant
■
if you only configured bootp for other module, you’ll have to configure
it for the other one now.
■
if you are using IP, and you do not use bootp for the IP addresses, set
the IP addresses for each segment using the ASCII console. If you are
using IPX, no configuration is necessary.
■
if you have an RS-232 cable or modem attached to the management
module, move the cable to the other module’s RS-232 port
The redundant Management Module will automatically take over and configure the stack with no user intervention.
Call your HP-authorized dealer or reseller to service the Management Module.
5-4
Troubleshooting
Diagnostic Tests
Testing the Hub’s Ports and the Links
■
Select Link Test from HP AdvanceStack Assistant’s Network Test
function or the ASCII console’s Connectivity Tests. This causes the
hub to send IEEE 802.2 Test command packets to a specified network
device out a specified segment. The device must be able to send an
IEEE 802.2 Test response packet upon receipt of a Test command
packet. Usually this would be another network device such as a hub,
switch or router. You specify the remote device by its 12-digit hexadecimal MAC address.
■
Select Ping Test. This is a network layer test that you can run on TCP/
IP networks. The hub sends ICMP Echo Request packets to a specified
network device. This works with devices that have an IP address and
are able to respond to an ICMP Echo Request packet. Most end nodes
using IP will respond to this packet. You specify the remote device by
its IP address.
■
Select IPX Test. This is a network layer test that you can run on
Novell NetWare IPX networks. The hub sends IPX test packets to a
specified network device. This works with devices that have an IPX
address and are able to respond to an IPX test packet. Most end nodes
using IPX will respond to this packet. You specify the remote device
by its IPX address.
If the test passes, the hub's port, the network link, and the remote device are
all working properly. If you are testing the AUI port, this also tests the
transceiver that is attached to the port.
If the test fails, you can test the hub using the “Testing the Hub Only”
procedures on the previous page. You should also verify that the remote device
is powered on and functioning properly, and that the cable is good, and that
the device is not connected to a segment which you have isolated from the
backplane.
If the hub passes its tests, but the network test (link test, Ping test, or IPX test)
fails, the problem is in the cabling, the remote device, or possibly the output
circuitry of the hub's port.
See the HP AdvanceStack Assistant online help for more information on how
5-5
Troubleshooting
To test the hub’s ports and the attached network links, first check for link beat
detection. Use these tests if you have link beat detected for a port (Port LED
is on or is active in the ASCII console). Then look up the segment that the port
resides on in the Port/Segment Configuration in the ASCII console. Then
choose one of the following ways to run a test between the hub and an
addressable device connected at the remote end of each of the cables you wish
to test:
to execute these tests.
Clearing a Password for the ASCII Console
You can use the Segment Display button to clear a forgotten console password
that was previously configured on the hub. You can clear the password to
access the Management Module. The password is configured from the ASCII
console.
To clear the password, follow these steps:
1.
Verify the hub has powered-up, passed self-test, and that the active LED
is lit for the Management Module.
2.
Press the Segment Display button on the Management Module for 8
seconds. (If you have installed a second Management Module in the stack,
only the Segment Display button on the active Management Module can
clear the password.)
Active
Base MAC Address
Press here for 8 seconds.
When the password is cleared, all 4 segment LEDs (1, 2, 3, and 4) will be
on solid as long as the button continues to be held down.
Note
After the password has been cleared, access to the hub from the console will
no longer be password protected. A new password can be assigned from the
ASCII console.
Troubleshooting
HP Customer Support Services
HP Customer Support Services
■
CompuServe
■
HP BBS
■
HP FIRST Faxback
■
World Wide Web
These services can be used to update your firmware or get information about
existing or new products. See the perforated card at the beginning of this
manual for more information.
5-7
Troubleshooting
If you are still having trouble with your stack of hubs, the following range of
customer support services are helpful:
A
Cables and Connectors
This appendix lists cables that have been tested and verified for use with the
HP Management Module. It also includes minimum pin-out information so, if
you wish to use an unlisted cable, you can verify that the cables used in your
installation are correctly wired. Note that each pin-out does not necessarily
match the pin-out for the corresponding HP cable, but cables manufactured
to follow the minimum pin-out will function correctly.
Recommended Cables
Console PC connection to the module’s RS-232 port:
Purpose
Cable
Description
Part No.
Connecting the
PC directly to
the module’s
RS-232 port
9-pin male
RS-232 9-pin female to 9-pin female null modem or “crossover” cable
F1047-80002 or
F1047-60901 or
5182-4794
25-pin male
RS-232C 9-pin female to 25-pin
male null modem or “crossover” cable
RS-232C 9-pin female to 25pin-female null modem or
“crossover” cable
24542G
(3 meters)
RS-232C 9-pin female to 25-pin
male standard modem or
“straight-through” cable
HP 24542M
25-pin female
Connecting a modem to the hub’s
RS-232 port
25-pin female
25442H
(3 meter)
You can contact your HP authorized dealer or call HP at 1-800-538-8787 to
order these parts.
A-1
Cables and Connectors
RS-232 Connector and Cable Pin-Outs
RS-232 Connector and Cable Pin-Outs
The Management Module’s RS-232 port connector is wired as depicted in the
following table.
Cables and Connectors
PIN
US
CCITT
DIN
1
DCD
109
M5
2
Rx
104
D2
3
Tx
103
D1
4
DTR
108
S1
5
GND
102
-
6
DSR
107
M1
7
RTS
105
S2
8
CTS
106
M2
9
RI
125
M3
Use the RS-232 port to connect a PC to be used as the console. To make this
connection, you must use a null modem cable or you can use the minimum
cable pin-out described below.
A-2
Cables and Connectors
RS-232 Connector and Cable Pin-Outs
A Minimum Cable Pinout for ASCII Console Connection
PC end
9-pin male
Hub end
9-pin male
2
2
Rx
3
3
Tx
5
5
GND
Cables and Connectors
RS-232 Modem Cable
Modem end
25-pin male
Hub end
9-pin male
2
3
Tx
3
2
Rx
4
7
RTS
5
8
CTS
6
6
DSR
7
5
GND
8
1
CD OR DCD
20
4
DTR
22
9
RI
23
Signal
DRS–typically on V.24 (European) modems
(not connected)
A-3
B
Specifications
Physical
Width
15.5 cm (6.1 in)
Depth
11.8 cm (4.6 in)
Height
4.4 cm (1.7 in)
Weight
1.3 kg (.28 lb)
Environmental
Operating
Non-Operating
Temperature
+0°C to +55°C
(32°F to 131°F)
-40°C to 70°C
(-40°F to 158°F)
Relative humidity
(non-condensing)
15% to 95%at 40°C (104°F)
15% to 90%
at 65°C (149°F)
Maximum altitude
4.6 km (15,000 ft)
4.6 km (15,000 ft)
Connectors
The RS-232-C console port conforms to V.22 bis.
Electromagnetic
Emissions
FCC part 15 Class A
CISPR-22 Class A/EN 55022 Class A
VCCI Level 1
Immunity
(See the Declaration of Conformity at the end of the Safety and Regulatory
Statements in the Switching Hubs manual)
B-1
Specifications
Safety
Complies with
IEC 950: (1991)+A1,A2/.EN60950 I(1992)+A1,A2
Acoustic Noise
Specifications
Not applicable
B-2
Specifications
Management Protocols
RFC 1157
SNMP
RFC 1901-1908 SNMPv2C
RFC 1420
SNMP over IPX
Support MIBS
IIETF 802.3
Repeater MIB
IETF
Entity MIB
RFC 1213
MIBII
RFC 1515
MAU MIB
RFC 1573
Interface Evolution MIB
RFC 1650
Ethernet MIB
RFC 1757
RMON MIB
HP MIB
Extensions
Available on request. Contact your HP-authorized dealer or local HP sales
office
Communication Protocols
UDP
RFC 791
IP
RFC 792
ICMP
RFC 793
TCP
RFC 826
ARP
RFC 854
Telnet
RFC 951
Bootp
RFC 1350
TFTP
Specifications
RFC 786
Novell IPX
B-3
Specifications
Regulatory Statements
FCC Statement (For U.S.A. Only) Federal Communications Commission
Radio Frequency Interference Statement
Note: This equipment has been tested and found to comply with the limits for
a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful
interference to radio communications.
VCCI Class 1 (For Japan Only)
European Community
Specifications
This equipment complies with ISO/IEC Guide 22 and EN55022 Class A.
Note
This is a class A product. In a domestic environment, this product may cause
radio interference, in which case the user may be required to take adequate
measures.
Complies with Canadian EMC Class A requirements.
B-4
C
Modem Configuration
Before installing the modems (one attached to the hub and one attached to
the terminal/PC), configure them by either issuing the appropriate AT command or by setting the modem’s switches, as described in the tables in the rest
of this appendix.
Hayes Smartmodem Optima 28.8 (V.34)
At the hub end:
Issue the following AT command:
AT&FW2&C1&D3&K3&Q9S7=60S46=138S48=7S95=32S0=1&W
At the user end:
Issue the following AT command:
AT&FW2&C1&D3&K3&Q9S7=60S46=138S48=7S95=32
Hayes ACCURA 288 V.34 + FAX
At the hub end:
Issue the following AT command:
AT&FW2&C1&D3&K3&Q5S7=60S36=7S46=138S48=7S95=47S0=1&
W
At the user end:
Issue the following AT command:
AT&FW2&C1&D3&K3&Q5S7=60S36=7S46=138S48=7S95=47
US Robotics Courier V.FC/V.34
At the hub end:
Issue the following AT command:
AT&FB0X4&A3&C1&D2&M4&H1&K1&B1S7=60S0=1&W
At the user end:
Issue the following AT command:
AT&FB0X4&A3&C1&D2&M4&H1&K1&B1S7=60
C-1
Modem Configuration
Megahertz XJ2288 PCMCIA card modem
At the user end:
Issue the following AT command:
AT&FW2&C1&D3&K3\J0\N3\Q3\V1%C1"H3S7=60)
Hayes V-Series ULTRA Smartmodem 14400
At the hub end:
Issue the following AT command:
AT&FS0=1&D2&S2&Y0&W0=60S0=1&W
At the user end:
Issue the following AT command:
AT&F&Y0&WO=60
Practical Peripherals PM288MT II V.34
At the hub end:
Issue the following AT command:
AT&F0W2&C1&D3S7=60S0=1&W0
At the user end:
Issue the following AT command:
AT&F0W2&C1&D3S7=60
Modem Configuration
Intel 14.4EX
C-2
At the hub end:
Set the A/B switch to A
Issue the following AT command:
AT&F0&R1&W0
At the user end:
Set the A/B switch to A
Issue the following AT command:
AT&F0&W0
D
Network Addressing
Communication Between the Hub and
Network Management Station
When an HP Management Module (HP J3210A) is installed in a stack of hubs,
they can be managed over the network by HP network management products,
for example HP AdvanceStack Assistant. These hubs can also be managed by
any other network management products that comply with the Simple Network Management Protocol (SNMP) standard and have standard SNMP MIBbrowser functionality.
The communication between the SNMP network management station and the
hub takes place using the network layer protocols: IPX for Novell networks,
or IP for TCP/IP networks.
Which protocol you use depends on the protocol being used by the network
management station. Additionally, if the network management station is on
the other side of a router from your hub, the protocol you run on both the hub
and the network management station depends on which protocol the router
can handle.
The network layer communications require that at least one of the segments
of the Management Module have a network layer address. This appendix
provides some background information on IPX and IP addressing.
For both IP and IPX networks, each segment receives a separate address. If
you are not putting ports on segments 2-4 and you did not add the Switch
Module to your stack, then you only need to assign an address to segment 1.
The Management Module is shipped with IP disabled on segments 2-4.
D-1
Network Addressing
IPX Addressing for Novell Netware
Network Addressing
IPX Addressing for Novell Netware
The Novell Netware network operating system uses a protocol called Internetwork Packet Exchange (IPX). The IPX protocol firmware is always available on an HP Switching Hub stack that has a Management Module and so you
do not need to do any configuration. The address is automatically assigned to
the hub’s segments as follows:
■
The network number and encapsulation is automatically assigned by
a router or file server on the network that is running the IPX protocol.
■
The Management Module provides unique MAC addresses, one for
each segment. This is used for the host number of the IPX address.
You may want to disable Bootp on your hub so that the hub does not poll the
network every 10 minutes looking for an IP address. Disable Bootp in the
ASCII console.
IPX can be configured to be enabled or disabled for each Management Module
segment. The default configuration of the Management Module is for each
segment to be enabled for IPX, with the network numbers and encapsulations
automatically discovered. You may manually configure a router address and
encapsulation if desired, although this is usually not necessary.
IPX configuration can be set through the console or through HP AdvanceStack
Assistant.
D-2
Network Addressing
IP Addresses for IP and Non-IP Networks
If you have chosen to manage your hub with an SNMP/IP network manager,
your Management Module in your hub must be configured with an IP address.
If your network will be connected with other networks that use IP addresses,
you must use assigned IP addresses. Otherwise, you can build your own IP
addressing scheme. The following information is described on the included
CD-ROM for HP AdvanceStack Assistant:
■
companies that provide IP addresses for your networks
■
how to build your own IP addressing scheme
■
examples of how to build class C addressing scheme
Use the IP Configuration command in HP AdvanceStack Assistant or the ASCII
console to specify IP addresses.
Setting the IP Address for a Hub
Specify an IP address for the hub if you want to use HP AdvanceStack
Assistant network management software. The steps to set the IP address in
the ASCII console are:
1.
Connect to the ASCII console as shown earlier in this chapter.
2.
Type ME to enter the menu system.
3.
Type 2 and press [Return] to select the IP/IPX Configuration.
4.
Set the IP address for segment 1 and any other segments you plan to put
users on. By default, segments 2-4 are set to “Disabled”. After an IP
address, subnet mask and gateway are entered, a screen like the following is displayed:
Current IP configuration
Time to live: 64 seconds
Interface | IP Config IP Address Subnet Mask
Gateway
----------------+------------ --------------- -------------------- --------------Segment 1 | Manual 15.29.200.16 255.255.248.0
15.29.100.1
Segment 2 | Disabled
Segment 3 | Disabled
Segment 4 | Disabled
Change IP configuration? (Y/[N]): N
D-3
Network Addressing
IP Addresses for IP and Non-IP
Networks
Network Addressing
Using Bootp
Network Addressing
Using Bootp
Bootp (Internet Boot Protocol) is used to download network configuration
data from a server (the Bootp server) to the hub. The configuration data the
hub retrieves from the Bootp server is:
■
the IP address for a hub segment
■
the subnet mask for the hub segment
■
the default router for that hub segment
If you have configured the hub’s IP parameters on a Bootp server, you do
not need to use the IP Configuration command in the ASCII console or
HP AdvanceStack Assistant. As shipped from the factory, the hub is configured to use Bootp to retrieve the IP configuration information. If you do not
want to use Bootp because your hub is in a Novell Netware environment,
Bootp can be disabled using the ASCII console. Bootp is automatically disabled if an IP address is explicitly assigned.
If you chose to manually configure a segment’s IP address, it is recommended
that you do not use Bootp for other segments. Instead you should either
disable bootp on those segments or manually configure addresses.
The Bootp Process
When the hub is powered on, it broadcasts Bootp requests that contain the
hub's MAC address. The Bootp server receives the request and searches its
Bootp table file for an entry that matches the hub's MAC address. If a match
is found, the configuration data in the associated file entry is returned to the
hub as a Bootp reply. For most UNIX systems, the Bootp table is contained in
the /etc/bootptab file. This example applies to the Bootp table for UNIX:
Bootp Table File Entries
An example entry in the Bootp table file /etc/bootptab for a Switching Hub is:
switchinghub:\
:ht=ether:\
:ha=080009123456:\
:ip=190.40.101.22:\
:sm=255.255.255.0:\
:gw=190.40.101.1:\
:vm=rfc1048:
D-4
E
Backup Links
Examples of Backup Links
With the Management Module in a stack of hubs, the Backup Link function
allows you to specify a backup link between two devices in case the primary
link fails. Three examples of backup links are shown below and on the next
page
Hub to a Server
Primary Link (fiber)
Backup Link (twisted-pair)
Management Module
Server
Hub to a Router
Management
Module
Backup Link
Primary Link
Router
E-1
Backup Links
Examples of Backup Links
Management Module
Backup Link (crossover twisted-pair)
Two Hub Stacks
Primary Link (fiber)
thin coax cable
for non-segmented
hubs
AdvanceStack Hub Stack 2
Backup Links
Switching Hub Stack 1
SNMP
Server
A backup link is a separate path connected between the hub and a device. The
port through which the cable is connected between the two devices is automatically enabled if the connection designated as the primary link fails.
How the Backup Function Works
The hub on which the redundant link is configured is responsible for monitoring the link. It sends packets to the station at the other end of the link and
looks for response packets from that station. If the response packets fail to
come back, the primary link is considered as having failed and the backup
link, which had not been carrying any traffic, is enabled automatically. If the
primary link does fail, it is automatically disabled until it can be repaired and
re-enabled.
When the primary link is repaired, you must re-enable the primary port. It is
not re-enabled automatically. When the primary port is enabled, the backup
port is automatically disabled and returned to backup mode. See “Reactivating
the Primary Link” later in this appendix.
E-2
Backup Links
Examples of Backup Links
Note
One hub in the stack needs an HP Management Module installed.
■
The port used for the primary link must be on a segment this is
connected to (not isolated from) the main four-segment backplane.
■
The port used for the backup link can be on a connected or isolated
segment, however it is recommended that you put the primary and
backup link on the same segment.
■
Any combination of media types can be used as a backup link by using
the AUI/Xcvr slot. This slot accepts fiber, thin coax, twisted-pair and
an AUI module for external transceivers. For example, a thin coax
link from the ThinLAN port can act as a backup link to a twisted-pair
link.
■
A Management module can monitor up to 4 backup links in a stack.
This would allow for 1 backup per segment or multiple backups on 1
segment.
■
The remote device should have no more than 2 backup links connected to it from a monitoring hub. If the remote device has more than 2
backup links functioning, it may not be able to respond to the test
packets fast enough when there is a high level of data traffic on the
network segments.
■
This ability to respond may be improved by increasing the time
between test packet transmissions on the monitoring hubs. For all
the backup links in which the remote device is involved, the time
configured on the monitoring hubs for those links should be increased
by one second for each additional backup link beyond two links. Add
one to this count if the remote device is also functioning as a primary
(monitoring) hub for a different link.
Backup Links
Suggestion
■
■
■
The primary link and the backup link cabling should be run over
different paths (through different conduits, for example) to reduce
the possibility that damage will occur to both cables simultaneously.
E-3
Backup Links
Configuring a Backup Link
Configuring a Backup Link
Configure the Monitoring Hub Only. All configuration of the backup links
feature is performed from HP AdvanceStack Assistant or the ASCII console.
On the “remote” device, you only need to make sure the ports used for the
primary and backup links are both enabled.
Backup Links
Use the Backup Function. To configure this link, you use the Backup function in HP AdvanceStack Assistant or the ASCII console. You provide the
following information:
E-4
■
the device and port to be used for the backup link
■
the device and port to be used for the primary link
■
the MAC address of the device at the remote end of the link
■
how frequently (in seconds) test packets (used to check the status of
the primary link) should be sent to the remote device
■
how many consecutive response failures will trigger activation of the
backup link
Backup Links
Identifying the Backup Link
Configuration/Installation Sequence
If a hub is installed in a network that includes two connections to another hub,
and the backup link has not yet been configured, a loop in the network now
exists that will cause some network performance degradation. For this reason,
it is better to configure the backup link on the hub before the hub is installed
in the network. It is best to follow these steps:
Attach a PC running an ASCII terminal emulator to the hub with an active
Management module, and start the ASCII terminal emulator.
2.
Verify the Extender Cable is attached between all of the hubs so that you
can configure a backup link on any port in the stack.
3.
Use the Backup function to configure the backup link.
4.
Complete the network cable connections between the monitoring hub
and the remote device. For cabling instructions, see the HP Switching
Hubs Installation Guide.
5.
On the remote device, make sure that the ports connected to both the
primary and backup links are enabled. On the monitoring hub, the status
of the primary and backup ports is controlled by the hub’s firmware; you
do not need to explicitly enable the monitoring hub’s ports.
6.
Enable the primary port in software. This step is necessary because until
you have completed step 4 (connecting the cables), the test packets
cannot be successfully sent through the primary port. The primary port
will therefore be disabled and the backup port will be activated. Once
you enable the primary port, it assumes the active role.
Identifying the Backup Link
The ports designated as the primary and backup ports are identified in:
■
the HP AdvanceStack Assistant Backup function window.
■
ASCII console interface by using the Backup command
The primary port is identified by (pri), the backup port by (bkup).
E-5
Backup Links
1.
Backup Links
Indications of Backup Link Activation
Indications of Backup Link
Activation
When the primary link fails (“n” consecutive test packet responses were not
received on the primary port from the other device), the backup link is
automatically enabled. The effect of this change is displayed on the monitoring
hub's LEDs and management interface. Activation of the backup link does not
change the status of any of the ports on the remote device.
On the monitoring hub's LEDs, the primary port LED goes off, and the backup
port LED goes on.
Backup Links
In the ASCII console or HP AdvanceStack Assistant, the status of the primary
port changes from “active” to “not active”, and the backup port changes from
not active to active.
See the online documentation for more information.
Reactivating the Primary Link
When the primary link is repaired, you can use any of the following methods
to re-enable the primary port:
■
From the ASCII console, select “Port/Segment Configuration”, then
“Disable and enable ports option”, then enable ports.
■
From HP AdvanceStack Assistant, re-enable the primary port. See the
network management product documentation for details on how to
enable a port.
■
Press the Reset button on the Management Module, or cycle power
on the stack of hubs. These processes will reset the hub and restore
the primary port's active status.
When the primary port is re-enabled, the backup port is automatically disabled
and returned to backup mode.
E-6
Index
A
D
ASCII console
features … 3-1
ASCII console, methods of accessing … 3-3
default settings … 2-7
diagnostic tests … 5-4
testing the hub only … 5-4
testing the ports and links … 5-5
B
E
backup link
configuration process … E-4
description … E-1
identification … E-5
indications of activation … E-6
limitations … E-3
operational notes … E-3
reactivating the primary link … E-6
BOOTP … D-4
example BOOTP table entry … D-4
broadcast packets definition … 3-8, 3-9
EASE description … 2-8
encapsulation … D-2
examples
backup links … E-1
BOOTP table entry … D-4
disconnecting hubs … 4-4
setting an IP address … D-3
C
G
cables
RS-232 console port … A-1
clearing a password … 5-6
collisions definition … 3-8, 3-9
communication protocols … B-3
community name
Managers/Password menu … 3-7
configuring a backup link … E-4
Connection Configuration option
ASCII console … 3-7
console
cables for connecting to RS-232 port … A-1
greeting screen … 3-6
counter definitions … 3-8, 3-9
CRC Errors definition … 3-8
customer support services … 5-7
giant packets definition … 3-8
F
Fragments definition … 3-9
H
HP AdvanceStack Assistant
features … 3-2
setting IP address … D-3
HP Interconnect Manager. See HP AdvanceStack Assistant
HP Management Module
cables for … A-1
hub
default settings … 2-7
Hub Information option
ASCII console … 3-7
Hubs
number in a stack … 4-2
Index – 1
I
N
included parts … 1-1
installing
extra memory … 1-2
module … 1-1, 2-1
Interconnect Manager. See HP AdvanceStack Assistant
IP address … D-3
setting for segments … D-3
IP configuration
errors in … 5-3
IP/IPX Configuration option
ASCII console … 3-7
IPX
encapsulation … D-2
IPX address … D-2
IPX test … 5-5
isolated segment … 3-7
network addressing
IP address … D-3
IPX address … D-2
Network Connectivity Test option
ASCII console … 3-7
network management
communication with the hub … D-1
Novell NetWare … D-2
J
jabbers definition … 3-9
L
LAN adapters
communication between segments … 2-4
link test … 5-5
O
on/off switch. See resetting the hub
out-of-band management
RS-232 port pin-out … A-2
P
Password, clearing … 5-6
ping test … 5-5
port mobility. See port switching
Port/Segment Configuration option
ASCII console … 3-7
power supply, additional. See HP Redundant Power
Supply
procedures
configuring a backup link … E-4
R
M
MAC address
use in IPX address … D-2
Managers/Password Change option
ASCII console … 3-7
memory, adding … 1-2
MIBs
support … B-3
modem
configuration … C-1
illustration of connections … 3-5
module
installing … 1-1, 2-1
removing … 1-6
multicast packets definitions … 3-9
2 – Index
recommended cables
description … A-1
removing the module … 1-6
resetting the hub
troubleshooting procedure … 5-4
RMON
adding SIMM for … 1-2
description … 2-8
support … 2-8
router
communication between segments … 2-4
S
Security Configuration
ASCII console … 3-7
segment
isolating … 3-7
Segment Display button
using … 2-4
Segmentation
displaying in Port LEDs … 2-4
self-test … 1-4
serial cable connection … 3-3
SIMM, installing … 1-2
stack
number of hubs allowed in … 4-2
reinserting a hub into … 4-3
removing a hub … 4-3
switch
communication between segments … 2-4
T
Telnet
connection … 3-4
disabling … 3-4
testing
ports and links … 5-5
troubleshooting
diagnostic tests … 5-4
IP configuration errors … 5-3
IPX test … 5-5
link test … 5-5
Ping test … 5-5
problems and solutions … 5-1
testing the hub … 5-4
testing the ports and links … 5-5
V
VLAN support … 3-2
Index – 3