Symptom

After reloading a VPC peer and a role change occurs, interfaces configured with "no lacp suspended-individual" are going to initializing state if the other end has not LACP configured: switch %ETHPORT-5-IF_DOWN_INITIALIZING: Interface Ethernet1/2 is down (Initializing) switch %ETHPORT-5-IF_DOWN_PORT_CHANNEL_MEMBERS_DOWN: Interface port-channel1 is down (No operational members) switch %ETHPORT-5-IF_DOWN_INITIALIZING: Interface port-channel1083 is down (Initializing)

Conditions

[+] Server directly attached to the VPC has not LACP configured. [+] VPC interfaces are running LACP with "no lacp suspended-individual" configured.

Workaround

[+] Configured LACP on the server side connected to the VPC. [+] Use "channel-group mode on" on the Nexus side.

Further Problem Description