I have been trying to figure this problem out for a few days now.
Windows Server 2008 R2
Two hyper V servers setup on CSV and Fail over clustering
I connected both of our servers to a backup Storage area network - they connect to a switch. Failover cluster manager picked that network up and assigned it as a cluster network. There was a problem with the switch port configuration that caused it to be partitioned. I fixed that issue and changed the ethernet ports being used on the servers.
Since this change the Fail over cluster manager isn't picking up the new network and lists the old network as being down ( using the old ports). What this means is that now live migration does not and if one of the hosts failed the fail over part wouldn't work.
I have tried rebooting the Hosts. I have tried stopping and restarting the Cluster services on each node in the fail over manager. After all this the old network is still there listed as being down and its not picking up the new network on the new ports.
I had the old network set as disallow cluster communication.
My research has picked up nothing that might give me a solution to this problem.