Managing CMMs
Chassis Management Module (CMM)
page 3-14
OmniSwitch 8800 Hardware Users Guide
December 2004
Switching the Primary and Secondary Roles
The primary and secondary CMMs can trade roles. In other words, the CMM that is currently functioning
as the secondary CMM can be assigned to “take over” the role of the primary CMM. The primary CMM
then assumes the secondary role. Because this action is coordinated between the two CMMs, switch
management functions are maintained during the takeover.
To manually designate the secondary CMM to assume the primary role, enter the
command at
the CLI prompt. For example:
-> takeover
The PRI and SEC LEDs on the CMM’s front panel display the CMM’s current role (i.e., primary or
secondary). Refer to
for more information. You can also use the
command to display whether the CMM you are currently logged in to is primary or secondary. For
example:
CONFIGURATION STATUS
Running CMM : PRIMARY,
CMM Mode : DUAL CMMs,
Current CMM Slot : A,
Running configuration : WORKING,
Certify/Restore Status : CERTIFY NEEDED
SYNCHRONIZATION STATUS
Flash Between CMMs : NOT SYNCHRONIZED,
Running Configuration : SYNCHRONIZED,
NIs Reload On Takeover : ALL NIs
In this example, the user is currently logged in to the primary CMM.
Note.
Before using the
takeover
command, verify that the primary and secondary CMMs are synchro-
nized. Otherwise, data flow and switch management functions may be interrupted due to incorrect or
outdated software when the secondary CMM takes over. For more information, refer to
