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Dell Chassis Management Controller Version 3.10 for Dell EMC PowerEdge VRTX User's Guide

Active CMC Election Process

There is no difference between the two CMC slots; that is, slot does not indictate precedence. Instead, CMC that is installed or started first, assumes the role of an active CMC. If AC power is applied with two CMCs installed, CMC installed in CMC chassis slot 1 normally assumes the active role. The active CMC is indicated by a blue LED.

If two CMCs are inserted into a chassis that is already turned on, automatic active- or standby negotiation can take upto two minutes. Normal chassis operation resumes when the negotiation is complete.


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