Hello all,
In our environment here, we have 3 clusters with multiple hosts in each cluster, obviously, but have what appears to be an issue with a specific VLAN or two. We have multiple distributed vSwitches and multiple port groups and VLANs in those DvS'. This is all in a UCS environment and all VMs and VLANs seem to be fine except when I migrate a VM that is in a particular VLAN.
I ran tests yesterday where I put a test (helper) VM in this particular VLAN and had a ping going from that VM to another [live/production] server in that same VLAN and also had a ping from an external jump server to this test/helper VM. I'd leave the pings going continuously while I migrated this helper VM to each host individually to verify that the connectivity was working fine.
Only one host had issues (well, there was actually another VLAN that didn't work on two of the hosts) and as soon as I migrated the helper VM from that host to any other host, the pings were working just fine.
I've looked at this particular host (in vSphere...will look in UCS manager) and don't see anything obviously wrong with it as the VLAN is listed in that hosts' dvs layout (under Config -> Networking).
Thoughts? :\