User's Manual

54 Installing and Setting Up the CMC
Active CMC Election Process
There is no difference between the two CMC slots; that is, slot does
not dictate precedence. Instead, the CMC that is installed or booted first
assumes the role of the active CMC. If AC power is applied with two CMCs
installed, the CMC installed in CMC chassis slot 1 (the left) normally
assumes the active role. The active CMC is indicated by the blue LED.
If two CMCs are inserted into a chassis that is already powered on,
automatic active/standby negotiation can take up to two minutes.
Normal chassis operation resumes when the negotiation is complete.
Obtaining Health Status of Redundant CMC
You can view the health status of the standby CMC in the Web interface. For
more information about accessing CMC health status in the Web interface,
see "Viewing Chassis and Component Summaries" on page 119.