HP ProCurve Series Manual

Read Me First
for the HP ProCurve Series 4100gl Switches – Software Version G.07.xx
Contents
About Your HP ProCurveProCurve Series 4100gl Switch Manual Set . . . . . . . . . . . . . . . . . . . . . .page 1
Software Updates . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 2
Your Ticket to Proactive Networking! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 2
Saving the Configuration After Installing or Exchanging a Module. . . . . . . . . . . . . . . . . . . . . . . .page 3
Transceiver Operation Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 4
mini-GBIC Operation Notes.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 6
Using Trunking with the Gig-T/GBIC gl ModuleStack Management Issue . . . . . . . . . . . . . . . . . .page 7
Time Zone Issue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page 8
About Your HP ProCurve Series 4100gl Switch Manual Set
The switch manual set includes the following:
Document Available on the HP
ProCurve Web Site
Shipped With
the Switch
Read Me First (this document)1 Yes Hardcopy
Installation and Getting Started Guide1 Yes Hardcopy and CD2
Management and Configuration Guide1 Yes CD2
Access Security Guide1 Yes CD2
Release Notes (for software updates) 1 Yes CD2
1The latest edition is alwaysavailable in PDF format and downloadable at http://www.hp.com/go/hpprocurve.
2The Product Documentation CD-ROM shipped with your switch.
How ToRead or Print Manuals Included On the CD-ROM
To access manuals included on the CD (in PDF format), use the Adobe® Acrobat® Reader. For PCs,
you will need version 4.0 (or greater) of the Reader. If you do not already have this version onyour
PC, you can download it from the Adobe web site at http://www.adobe.com.
For MAC and UNIX® Platforms. You can download a Reader from the Adobe web site at
http://www.adobe.com.
1

Software Updates
Hewlett-Packard provides software updates on the HP ProCurve web site for
your Series4100gl Switch. To access the software updates, go to the HP ProCurve
web site at http://www.hp.com/go/hpprocurve, then click on software updates to go
to the “HP ProCurve Networking Software updates” page.
Register for Automatic Notification of Updates. From the HP ProCurve web
site click on technical support. Under “Additional support”click on Software
notification registration and follow the instructionson that page for how to receive
automatic email update notices.
To determine whether you have the latest software, you can compare the software version that is
available on the web site with the version that is currently installed on your switch. Follow the
instructions below to determine the current software version onyour switch.
To Determine the Current Software Version in Your Switch. FUse any of the following
methods to view the version:
 Start a console session with the switch. In the console login screen(the first screen
displayed), the Firmware revision line under the switch name shows the software version.
 If you already have a console session going,at the prompt enter the show version command.
The resulting display lists the current software version.
 In the web browser interface, click on the Identity tab. The current software version is listed
as the revision number in the Version line.
Your Ticket to Proactive Networking!
HP ProCurve Manager and HP ProCurve Manager Plus are breakthroughs in network management
software that give you more network with less work. For more information, visit the HP ProCurve
web site at http://www.hp.com/go/hpprocurve and click on products index (in the sidebar), then locate
HP ProCurve Manager and Manager Plus under the Network management bar.
2

Saving the Configuration After Installing or Exchanging a Module
The following cases automatically result in a change to the running-configuration on your switch:
 If you replace a module with another module of a different type and then reboot the switch
 If you install a module in a slot that has not previouslybeen used (including when you install
a moduleand apply power to the switch for the first time)
If you want to save such changes to permanent memory (startup-configuration), use switch console
CLI interface and enter the write memory command. This causes the switch to use the current
hardware configuration after subsequent reboots.(The switch always reboots from the startup-
configuration.)
If you do not save hardware changes to the startup-configuration, you will be prompted with the
following message (to save the configuration) the next time you use the reboot or reload commands,
or if you move from the CLI to the Menu interface:
Do you want to save the current configuration [y/n] ?
Note that if you exchange module types in a slot and reboot the switch, but do not save the
configuration, you can restore the switch to its prior configuration state by re-installing the original
module type inthe slot and rebooting the switch again. This isbecause the switchoperates by using
the running-config, but reboots from the startup-config.
Replacing a module with another module of the same type in the same slot does not affect the switch
configuration and it is not necessary to save the configuration.
For more information on switch memory, including the startup-config and running-config memories,
refer to the Managementand Configuration Guide on the Documentation CD-ROM included with
your switch.
3

Transceiver Operation Notes
There are fivedifferent kinds of transceivers, including the Gigabit Stacking Transceiver that comes
in the Gigabit Stacking Kit (J4116A), that can be installed in the HP ProCurve Switch Gigabit
Transceiver gl Module (J4864A). This module can be used with your Series 4100gl Switch.
The transceivers can be “hot swapped”. That is, they can be installed, removed, and exchanged after
the Gigabit Transceiver gl Module is already installed in the switch and powered on. The details on
installing the transceivers can be found in the Installation Guide thatcomes with the transceivers
or the Gigabit Stacking Kit.
The following table lists some specifics about the way your Series 4100gl Switch handles the
configuration of the transceiver port when first installing a transceiver, and when replacing or
exchanging the transceiver.
Table 1. Considerations When Installing, Replacing, and ExchangingTransceivers
Action Replacing a Exchanging a Installing a
Transceiver with Transceiver with Transceiver in a
Another of the Another of a Previously
Same Type Different Type Unused Slot6
1. Verify thatport configuration is satisfactory for the new
transceiver.
No1 Yes2 Yes4
2. Execute write memory 3 Not necessary for
this option.1 Yes Yes
1 Uses the same configuration as the previous transceiver.
2See “Verifying a Satisfactory Port Configuration”, below.
3See “Transceiver Changes and Switch Memory” on page 5.
4 Uses the default port settings. You should verify that these are the settings you want in the port configuration.
5A “previously unused slot” means an empty transceiver (or module) slot that is in the factory default configuration. After
a slot has been used and write memory executed, you can returna slot to “unused” status by removing the transceiver
(or module) and returning the switch to its factory default configuration (by using the erase startup-config command
or the Clear/Reset button combination described in the switch’s Installation and Getting Started Guide).
Verifying a SatisfactoryPort Configuration
Whenyou replace a transceiver with another transceiver of a different type and then execute the
write memory command, the switch configures the port on the new transceiver with the default mode
(speed and duplex) settings used for new transceiver type. However, the switch also retains other
port-specific configuration settings, such as trunking, Spanning Tree Protocol (STP), and VLAN
values. For thisreason you should verify thatthe current configuration for a port affected by a change
in transceiver type does not create potential network problems. For example:
4

 Changing the transceiver type for a trunked port without ensuring that the mode settings for
the port match other ports in the same trunk can resultin a mode mismatch.
 If STP is enabled on the switch, thenchanging the transceiver type for a port without
reconfiguring the cost or priority settings for that port can unfavorably affect how the switch
uses that port in the STP environment.
 If the port was configured with non-defaultVLAN settings before changing transceiver types,
then you should ensure that these settings support your intended use of the port after
installing the new transceiver type.
Transceiver Changes and Switch Memory
Use the write memory command to save the current configuration to permanent memory (startup-
config) if you want the switch to use the current hardware configuration after subsequent reboots.
Otherwise, you will be prompted with the following message (to save the configuration) the next
time you use the reboot or reload commands, or if you move from the CLI to the Menu interface:
Do you want to save the current configuration [y/n] ?
Note that if you exchange transceiver types in a module and reboot the switch, but do not save the
configuration, you can restore the switch to its prior configuration state by re-installing the original
transceiver type in the moduleand rebooting the switch again. Thisis because the switch operates
using the running-configuration, but reboots from the startup-configuration. For more information
on switch memory, including the startup-config and running-config memories, refer to the Manage-
ment and Configuration Guide on the Documentation CD-ROM included with your switch.
For more information on transceivers and the transceiver module, see the documentation provided
with the transceivers and the moduleand also available on the Documentation CD-ROM provided
with your HP Series 4100gl Switch. For the latest version of HP switch documentation, visit
http://www.hp.com/go/hpprocurve. (Click on technical support, then Product manuals.)
Transceiver Configuration Notes
Note
In the following text, any mention ofnegotiation of “flow control” assumes that flow control is Enabled
for the port, which allows the negotiation. In the default configuration, flow control is disabled, but
can be enabled through the switch console.
Default Configuration for Transceivers. The default configurations for the following high-speed
transceivers, which can be installed in your Series 4100gl Switch, are as follows:
 Gigabit-SX and Gigabit-LX transceivers — Auto. The speed and communication mode are set
at 1000 Mbps and full duplex, according to the standards, and the switch auto-negotiates
flow control with the connected device.
 100-FX — 100/Full. The port has a fixed configuration of100 Mbps, full duplex.
5

 100/1000-T — Auto.The communication mode is set at full duplex, the switch auto senses
the link speed, and auto negotiates the flow control and the port MDI/MDI-X operation.
Connecting the Transceivers to Devices with Fixed Configurations. For some older network
devices, including some older HP ProCurve devices, the default for the Gigabit-SX and -LX ports is
a fixed configuration, for example 1000 Mbps/Full Duplex, or is otherwise different from these default
configurations for the transceivers. As a result, those devices may not connect properly to your Series
4100gl Switch; you will not get a link. Additionally, if you connect the 100/1000-T Transceiver, in its
default configuration, to another device that has anyfixed (non-Auto) configuration, you will not get
a link.
In summary, this ishow the transceivers behave if connected to a device with a fixed configuration:
 100-FX Transceiver — a good connection to a 100 Mbps/full duplex device; a link but very
poor performance ifconnecting to a 100 Mbps/half duplex device because of the resulting
duplex mismatch between your switch and the connected device.
 Gigabit-SX and Gigabit-LX Transceivers — no link unless the transceiver configuration is
modified to match the fixed configuration of the connected device;these devices operate
only at full duplex according to the standards.
 100/1000-T Transceiver — no link unless the transceiver configuration is modifiedto match
the fixed configuration of the connected device, or the connected device is another HP
ProCurve switch configured to either the Auto-100or Auto-1000 options.
Make Sure the Configurations Match. Because of these default configuration and full-duplex
considerations, for best operation, you should make sure that the devices connected to the trans-
ceiver ports are configured the same asthe default configurations shown above. At a minimum, make
sure the configurations match.
Mini-GBIC Operation Notes
Hot Swapping mini-GBICs. The Gigabit-SX and Gigabit-LX mini-GBICs that you can install in your
HP ProCurve Switch gl mini-GBIC Module can be removed and installed after the module is installed
in the switch and receiving power. You should disconnect the network cables from the mini-GBICs
before hot swapping them.
Whenyou replace a mini-GBIC with another mini-GBIC of a different type and then execute the write
memory command in the switch console, the switch configures the port on the new mini-GBIC with
the default mode (speed and duplex) settings used for new mini-GBIC type. The default mode for
both the Gigabit-SX and Gigabit-LX mini-GBICs is Auto. Note that the switch retains other port-
specific configuration settings, suchas trunking, Spanning Tree Protocol (STP), and VLAN values
that were configured forthe previous mini-GBIC.
Connecting the mini-GBICs to Devices with Fixed Configurations. For some older network
devices, including some older HP ProCurve devices, the default for the Gigabit-SX and -LX ports is
a fixed configuration, for example 1000 Mbps/Full Duplex, or is otherwise different from these default
6

configurations for the mini-GBICs, which is Auto. As a result, those devices may not connect properly
to yourmini-GBIC port; you will not get a link. Because of these default configuration and full-duplex
considerations, for best operation, you should make sure that the devices connected to the
mini-GBIC ports are also configuredto Auto. At a minimum, make sure the configurations match.
Gigabit-LH mini-GBIC Support. The Gigabit-LH mini-GBIC (J4860A) is now supported under the
G.07.xx or later switch software version for any of your HP ProCurve Series 4100gl Switches.
Using Trunking with the Gig-T/GBIC gl Module
Valid trunking configurations using this module differ from those described in the Management and
Configuration Guide shipped on the documentation CD that came with the switch, and the online
Help provided in the console and web browser interfaces.
The trunking grouping for the Gig-T/GBIC gl Module is as follows:
Group1: 1-5, 7-11, 16
Group2: 6, 12-15, 17-22
Trunk groups must be created with ports from the same group, Group1 or Group2. See the HP
ProCurve Switch gl Modules Installation Guide for more information.
Release G.07.41 (or greater) of the switch software is required in the HP ProCurveSeries 4100gl
Switches to support the HP ProCurve Gig-T/GBIC gl Module (J4098A).
Stack Management Issue
One of the features available on your Series 4100gl Switch is Stacking. You can connect up to 16
switches together to form the stack, and then manage them all through a single IP address. The switch
that has the IP address isdesignated as the stack commander, and the other switches are configured
as stack members and are accessed through the commander.This feature isalso available on older
HP ProCurve Switches including the Switch 1600M, the Switch 2424M, the Switch 4000M and Switch
8000M, the Series 2500 Switches, and the Switch4108gl and Switch 4108gl Bundle that are running
operation system version G.04.04 or older.
The problem. The older switches use a version of the feature that does not recognize your newer
Series 4100gl Switches, but only when you use the switch web interface to perform your stack
management. (A “newer switch” is any such switch running operating system version G.05.xx or
later). Ifone of the older switches is configured as the stack commander, when you try to access a
newer Series 4100gl Switch by selecting it in the Stack Access field on the web interface screen, you
will get an error. The newer switch image will not be displayed.
7

The solution. If you encounter this problem, the solution is to configure the newer Series 4100gl
Switch as the stack commander and configure the older switches as stack members.
For more information onthis feature, please see the Managementand Configuration Guide that is
on the Documentation CD that came with your switch.
Time Zone Issue
Starting with the G.05.xx version of the switch operatingsystem software, an error in configuration
of the Time Zone for TimeP or SNTP configuration has been corrected. Previous switch software, for
all HP ProCurve switches, used positive time offset values for time zones that are West of GMT and
negative values for times zones thatare East of GMT. The standards indicate that time zones West of
GMT should be designated by negative offset values, and time zones East of GMT by positive values.
Software version G.05.xx corrects this error, but if you use to the same values for indicating time
zones as you did for previous HP ProCurve switches, the time will be set incorrectly. For example,
for previous HP ProCurve switches, the US Pacific time zone was indicated by +480. With software
version G.05.xx (or later), the US Pacific time zone must now be indicated by -480.
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Part Number: 5990-6047
November 2003
Printed in Singapore
*5990-6047*