The flag EnableVPCDiscovery controls vPC discovery. By default, vPC discovery is enabled in IP 9.1.

To disable vPC discovery, set the value of the flag EnableVPCDiscovery in <BASEDIR>/conf/tpmgr-param.conf file.

EnableVPCDiscovery= FALSE

For information on the events and root-cause analysis of vAggregatePort, refer to IP Manager Reference Guide.