System Management
7210 SAS M, T, X, R6 Basic System Configuration Guide Page 213
Active and Standby Designations
Typically, the first Switch Fabric (SF)/CPM card installed in a redundant 7210 SAS-R6 chassis
assumes the role as active, regardless of being inserted in Slot A or B. The next CPM installed in
the same chassis then assumes the role as the standby CPM. If two CPM are inserted
simultaneously (or almost simultaneously) and are booting at the same time, then preference is
given to the CPM installed in Slot A.
If only one CPM is installed in a redundant router device, then
it
becomes the active CPM
regardless of the slot it is installed in.
To visually determine the active and standby designations, the Status LED on the faceplate is lit
green (steady) to indicate the active designation. The Status LED on the second CPM faceplate is
lit amber to indicate the standby designation.
The following output shows that the CPM installed in Slot A is acting as the active CPM and the
CPM installed in Slot B is acting as the standby.
A:7210SASR1# show card
===============================================================================
Card Summary
===============================================================================
Slot Provisioned Type Admin Operational Comments
Equipped Type (if different) State State
-------------------------------------------------------------------------------
1 imm-sas-10sfp+1xfp up up
2 imm-sas-10sfp+1xfp up up
A cpm-sf-sas-R6 up up/active
B cpm-sf-sas-R6 up up/standby
===============================================================================
A:7210SASR1#
The following console message displays when a CPM boots, sees an active CPM, and becomes the
standby CPM.
...
Slot A contains the Active CPM
This CPM (Slot B) is the Standby CPM
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