Important commands used for validating authentication between BGP peers:
- show ip bgp summary – Allows you to verify that neighbor relationships are properly functioning
- show ip bgp neighbors <neighbor ID> | include BGP – Will provide a consolidated output of the BGP neighbor details to indicate the BGP state, where Established is preferred and indicates a properly authenticated, operational state.
You’ll receive this message if the local router has a password configured, but the peer does not.
You’ll receive this message if the local router has a password that doesn’t match its peer, and vice versa.
Stuck-in-Active: Journal of an IT-Network Administrator 