Symptoms
LLDP information (enabled on vDS) goes missing or shows LLDP information is not available on this physical adapter on vCenter Web client after host reboots or port-lldpd service restarts
Cause
This is a known issue, and will be hit when both port lldp and vDS lldp are enabled in ESXiPort-lldpd service is VxRail specific service introduced and enabled (by default) in 4.7.x releases and/or releases that has support for Smart Fabric switches. This service essentially enables LLDP (port level in ESXi) for the uplink ports of VxRail vSphere Distributed Switch. This LLDP information will in-turn be used during automated day-0 deployments of VxRail with Dell s Smart Fabric Switches.
Resolution
There are two known workarounds:Workaround 1:
Change the discovery protocol for the VxRail vDS to CDP or disabled and apply the changes.Change the discovery protocol back to LLDP, and apply the changes.LLDP information will now be displayed, however, the issue will arise after host reboots or if port-lldpd service running in ESXi hosts were restarted due to any means.
Workaround 2:Disable port-lldpd service running on ESXi hosts.
Go to Configure->System->Services->port-lldpd->edit startup policy and choose start and stop manually for the port-lldpd service for every ESXi host in the cluster.After changing start-up policy for the service, manually stop the service this will ensure port-lldpd service doesn't get automatically started following reboots.
With workaround 2 implemented, the issue will not be hit again.
