Moving PowerHA Cluster Nodes to a New Network Switch

I'm contemplating moving the nodes of our PowerHA cluster to a faster switch. I'm not familiar with the intricacies of the network configuration for clusters. None of the IP addresses or network masks will be changing. For our standalone nodes, the network engineer has simply unplugged the cable from the old switch and plugged it into a port on the new one. Is it that simple?
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Yes, it is.

Take down the cluster before unplugging/plugging to avoid an unwanted failover!

If you're running PowerHA System Miirror Ver. 7 the new switch must allow multicast communication between nodes (usually it will), because the PowerHA 7 nodes use that  method for their conversations.
babyb00merAuthor Commented:
While running "smitty clstop" I took the resource group off line. Now that I'm bringing the cluster software back up with "smitty clstart" I'm given two options for the resource group; Automatically and Manually. I'm guessing that Automatically is a safe bet since this is the primary node and no other node has the resource group.
"Automatically" is the method to choose if the affected resource group(s) is/are offline (or can be safely moved to its home node, by the way)).

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