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Random VM's within Hyper-V 2012 Cluster losing connectivity.

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Folks,

I have a 4 node Hyper-V 2012 Failover Cluster.

The networking is

1*1GB Nic for Management

4*1GB Team for VM Comms

3*1GB Team for iSCSI, Heartbeat, Backups etc

2* FC HBA for storage

The problem here is that random VMS are losing connectivity. The VM is up; the nic looks connected, however it does not see its default gateway.

The problem VM can ping any other VM on that Node.

If I do an "arp -a -v" on the VM it has an invalid arp entry of 00-00-00-00-00-00

If I move the VM to another node the nic kicks back to life.

Any ideas on what could be causing this.

Cheers





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