Hi All,
I can honestly say hand on heart that this is the first time I have ever asked for help in a forum in over 15 years but this is doing my head in..
I have a Sys Center 2012 R2 deployment.. VMM R2 up to RU3, Edge Cluster (2 hosts), Management Cluster (2 hosts), 2 x Production Compute Clusters (total of 20 hosts). I have a HA Network Virt Gateway deployed on the edge cluster.
All Hosts have the new DHCP install done and the RU3 SQL patch is completed as outlined in deployment manual.
Everything had been running fine for some time after RU3 update... I am experiencing an issue whereby I get the following error anytime I try and attach a NVGRE VM network to a VM, or when I try and migrate a VM with a NVGRE network attached to another host.
Error (13641)
The specified subnet prefix must be between the starting and ending values for the range.
Starting value: 4
Ending value: 30
Recommended Action
Specify a suitable subnet prefix.
All subnets in the entire network are /24's so prefix isn't an issue.
I can successfully attach a standard vm network but get the above error when working with NVRGE networks..
Further to this, if I restart VMM the DHCP function to VM's with NVGRE networks doesn't get picked up until I trigger a change in config on the VM, then it will get IP and function as expected.
I have checked all logs, there aren't any errors that I can see.
get-netvirtualizationlookuprecord throws out VM's and PA's as expected, but again not until I manually interfere with the VM in question.
Have any of you come across this before?? I want to check before I go rebuilding the PA network entirely and having to cleanup all existing VM networks to do it..
Any help or guidance would be appreciated..
Cheers
Nathan