Filter
Top Products
Redundancy (Switches 8200zl)
Hotswapping Management Modules
When the Standby Module is not Available
If you have disabled redundancy with the no redundancy management-module
command, 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 no redundancy
management-module command). If the active management module’s config
file has redundancy administratively disabled, the hotswapped manage-
ment 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.
4. The hotswapped management module goes into standby mode and is
ready to take over in case of a switchover.
15-16