NICs go down when host is put into maintenance mode

[bulabog]

Hi All,

I just wanted to ask if there is anyone in the community who have experience a similar issue (and fixed it).

We have a DRS/HA cluster (BL460c Gen9 blades) running on ESXi 5.5 U3

When we place a host in maintenance mode, it would start migrating the VMs, then the host's NICs would go down for some unknown reason and the host becomes inaccessible from vCenter.

This would then trigger a HA failover amongst the other hosts since the affected ESXi server becomes disconnected. Rebooting the affect ESXi server will unlock the VMs allowing HA to fail them to other hosts.

After rebooting the affected server, all its NICs go back to "up" state and working again.

Many thanks in advance.

[DavoudTeimouri]

Hi,

I didn't have same experience but I suggest to do the below step to recover the issue:

1. Update your NIC firmware.
2. Update NIC driver manually from HPE Software Delivery Repository vibsdepot (aka HPE Online Depot)
3. Force NIC state to up by using this command: esxcli network nic up -n vmnicX
4. Check your Flex-Fabric (Virtual Connect) logs about the server up links and down links.

If your problem was not resolved, please share more information with us such as ESXi logs.

[Krede]

Did firmware update solve this issue? or did you find another solution ?