BGP Message Types: BGP uses several types of messages for various functions: Open, Update, Notification, and Keep-Alive.
Keep-Alive Message: This type of message is sent periodically to verify connectivity between BGP peers. After the BGP session is established with Open messages, Keep-Alive messages ensure the session remains active and monitor the health of the connection.
Connectivity Verification: During the establishment of a BGP session, the Open message is initially used. Post-establishment, Keep-Alive messages are sent at regular intervals to maintain the connection and to verify that both peers are still reachable and operational.
References:
Nokia BGP Fundamentals Documentation, Chapter on BGP Message Types
RFC 4271 (A Border Gateway Protocol 4), Sections 4.2 and 4.4
Contribute your Thoughts:
Chosen Answer:
This is a voting comment (?). You can switch to a simple comment. It is better to Upvote an existing comment if you don't have anything to add.
Submit