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CISCO UCS - Interview Questions
How to change FI primary to sub-ordinate and viceversa.
Process to failover

1. Login to the primary 6120 via the UCS cluster IP address.
2. Verify the current primary 6120 in the cluster.
3. Enter local management on the primary via “connect local-mgmt” command.
4. Issue the “cluster lead x” command to make the subordinate switch become the primary. Replace “x” with the correct switch letter.
5. Verify that the role has changed on the previously subordinate switch by SSH’ing into it and issuing the “show cluster state” command.
 The switch show now show up as the primary.
 
 1. from FI-B to FI-A
  UCS-B# connect local-mgmt b
  UCS-B(local-mgmt)# cluster lead a
 
 2. from FI-A to FI-B
  UCS-A# connect local-mgmt b
  UCS-B(local-mgmt)# cluster lead b
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