I had a need to use my Hyper-V failover replica today. What I thought was going to be pretty straight forward ended up in a nightmare. Long story short I did a planned failover to my replica and brought my VM's online. No problems there. Everything went as expected. The problem started when I realized that my VMs did not have network connectivity. I have 3 VMs. Each host has a team consisting of 2 NICs that is used for my virtual switch named "Virtual Switch" on both hosts. I was able to get 2 of the 3 VMs network to start working by going into Hyper-V manager and choosing "Not connected" for the virtual NIC and then reconnecting it back. This only worked for the first two. For the third VM this would not work. After messing around I could only get the third VM to work if I shutdown one of the other VMs. It's like they were in conflict with each other. I tried removing the virtual NICs from all the VMs and re-adding them. Also tried removing the virtual switch and recreating. I finally had to give up and fail my VMs back to the original host. After which they worked just fine. I have two other VMs I can failover and test with which is my next step but at this point I'm at a bit of a loss. Anybody have any ideas on what to look at or had any network issues after failing over to a replica? Servers are both Hyper-V Server 2012 R2.
Thanks,
Scott