What Are Different Bgp Message Types?

1.	What Are Different Bgp Message Types?
Answer» Open - It is Used to establish a neighbor relationship and EXCHANGE PARAMETERS, INCLUDING autonomous system number and authentication values. Keepalive - It is Sent periodically to maintain the neighbor relationship. If the Keepalive message is not received within the negotiated Hold timer than BGP neighborship will be turned down. Update - It exchanges Path ATTRIBUTES and the associated prefix/length (NLRI) that use those attributes. Notification - It is Used to REPORT BGP error. It results in a reset of neighbor relationship.

Answer»

Open - It is Used to establish a neighbor relationship and EXCHANGE PARAMETERS, INCLUDING autonomous system number and authentication values.
Keepalive - It is Sent periodically to maintain the neighbor relationship. If the Keepalive message is not received within the negotiated Hold timer than BGP neighborship will be turned down.
Update - It exchanges Path ATTRIBUTES and the associated prefix/length (NLRI) that use those attributes.
Notification - It is Used to REPORT BGP error. It results in a reset of neighbor relationship.

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