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Redundancy (Switch 8212zl)

Hotswapping Management Modules

When the Standby Module is not Available

If you have disabled redundancy with the configuration level command no

redundancy management-module, or the standby module failed selftest, the

Dwn LED will not turn green to indicate it is OK to hotswap out the active

management module.

Note If you remove the active management module without pressing the MM

Shutdown button, any files that may have been in the process of

synchronizing will not finish synchronizing to the standby module and all file

transfer is aborted.

Hotswapping In a Management Module

If another management module is hotswapped in while there is an active

management module booted up, the newly hotswapped management module

becomes the standby module. It partially boots up and heartbeats are sent

back and forth with the active management module. No negotiating is needed

as to which module will become the active management module as there is

already a functioning active management module. However, these conditions

must be met to determine if the hotswapped module can become a standby

management module:

■ The hotswapped module must pass selftest

■ Redundancy is not administratively disabled (using the configuration

level command no redundancy management-module). If the active manage-

ment module’s config file has redundancy administratively disabled, the

hotswapped management module goes into “offline” mode.

Software Version Mismatch Between Active

and Hotswapped Module

Sometimes the software version in the hotswapped module may not match

the software version in the active module. In these cases the following occurs:

1. The active module sends the primary and secondary images in flash to the

hotswapped module.

2. The module that was hotswapped in then reboots if necessary to primary

or secondary flash, whichever matches (if it doesn’t match already).

3. After the hotswapped management module finishes booting, it is sent the

config and other critical files from the active management module.

15-16

HP ProCurve Management And Configuration Guide

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