Tag Archives: Merge

Cisco MDS Fabric Merge Failure Case

We had ran a MDS fabric merge recently between MDS9509 and MDS9148 and met below two errors during the merging process. These errors could be avoided by configuring the correct setting which is detailed as below:


  • Domain ID Configuration

Error Message: %FCDOMAIN-2-EPORT_ISOLATED: %$VSAN 10%$ Isolation of interface port-channel10 (reason: configured domain ID is different from runtime domain ID)

From the log information, it is clear stated that the Domain ID is mis-matched between running-config and local switch configuration. One of the major reasons is the “fcdomain restart” command is not executed after setting the Domain ID. The “fcdomain restart” command basically applies your changes to the runtime settings and align the configured ID and running ID.

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