06-16-2017 02:30 AM
Our core switch (brocade dcx-4s-b) changed the role to Subordinate from Principlal during the Upgrade. Does it make any differences in the fabric configuration? Is changing the switch role a must? This is production environment, I think changing role is a disruptive process. Please advise me.
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06-16-2017 05:46 AM
technically it makes no real difference. The principal manages the time and the domain ID assignments in the fabric. If it changed (not normal at all in my eyes) to a pizzabox switch I would change it back to the director, higher CPU..etc..
You can force the principal switch non-disruptively with the fabricprincipal -f CLI. See the Help pages. It just forces a Built Fabric.
You can also assign priorities for each switch to prevent things like that.
06-19-2017 07:47 AM
Thank you Thomas. Just wanted to confirm that changing fabric role is a non-disruptive activity becuase I had seen the confusing statements in this forums whether fabric build is disruptive or not.