Managing CMM Directory Content
Managing Redundancy in a Stack and CMM
OmniSwitch 6800/6850/9000 Switch Management Guide
December 2007
page 4-29
Swapping the Primary CMM for the Secondary CMM
If the primary CMM is having problems, or if it needs to be shut down, then the secondary CMM can be
instructed to “take over” the switch operation as the primary CMM is shut down.
Note.
It is important that the software for the secondary CMM has been synchronized with the primary
CMM before you initiate a secondary CMM takeover. If the CMMs are not synchronized, the takeover
could result in the switch running old or out-of-date software. Synchronizing the primary and secondary
CMMs is described in
“Synchronizing the Primary and Secondary CMMs” on page 4-27
.
To instruct the secondary CMM to takeover switch functions from the primary CMM, enter the following
command at the prompt:
-> takeover
To instruct the secondary CMM to takeover switch functions from the primary CMM with a complete
CMM reload, enter the following command at the prompt:
-> takeover with-fabric
Note
.
On OmniSwitch 9000 switches only, the CPM, CFM and CPU can be reset independently.If the
local/remote fabric module is in up (good) state, only the CPM will be reset. If the local/remote fabric
module is in a down (bad) state, then the complete CMM will be reloaded.
The
takeover
command is described in detail in the
OmniSwitch CLI Reference Guide
.
On OmniSwitch 6800 and 6850 switches only, in a stack with three or more switches, the secondary
CMM takes over as primary and the original primary becomes “idle.” The next available idle switch
becomes the new secondary CMM. For more information on stacks, see the “Managing Stacks” chapter
found in the appropriate
Hardware Users Guide
.
Note
. The saved
boot.cfg
file will be overwritten if the
takeover
command is executed after the
copy running-config working
or
write memory
command on an OmniSwitch 6800/6850/9000 switch set
up with redundant CMMs.
Содержание OmniSwitch 6850 Series
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