I had an issue where traffic on one of my ESXI port groups stopped passing traffic.
Port Group name :UCM vnic 1&2 - Catalyst 4500 Etherchannel Mode on, access vlan 100
Port Group name :Unity/Uccx vnic 3&4 - Catalyst 4500 Etherchannel Mode on, access vlan 100
My setup was in my UC environment was configured with 2 x vNics for my UCM VMs and 2 x vNics for my Unity/IUCCX VMs.
I am not trunking over the Etherchanels, and my Cisco switches are configured with mode on, and are access ports in Vlan 100.
Traffic stopped passing over Port Group Unity/UCCX and I was unable to access the VMs from the switch side of the network. As all VMs are in the same vlan, I moved my Unity and UCCX VMs into Port Group UCM and then they were reachable from the network. Only Port Group Unity/Uccx had failed.
The only way I could resolve the issue was to power down all VMs and reboot the C210 server.
They had been operational for a period of time before the fault appeared. Any ideas why this may have happed or how to resolve without a complete server reboot would be appreciated.
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