Which BGP message is used to keep the session alive without exchanging route updates?

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Multiple Choice

Which BGP message is used to keep the session alive without exchanging route updates?

Explanation:
Keepalive is the message used to keep a BGP session up when no routes are being exchanged. After two neighbors establish a session with an Open, they send Keepalive messages at regular intervals to show the connection is still alive. These messages don’t carry routing information; their purpose is simply to reset the Hold Time timer and verify liveness between the peers. If no messages are received within the negotiated Hold Time, the session is considered down and the connection is closed. Other message types have different roles: Open starts the session, Update carries the actual routing information, and Notification signals errors.

Keepalive is the message used to keep a BGP session up when no routes are being exchanged. After two neighbors establish a session with an Open, they send Keepalive messages at regular intervals to show the connection is still alive. These messages don’t carry routing information; their purpose is simply to reset the Hold Time timer and verify liveness between the peers. If no messages are received within the negotiated Hold Time, the session is considered down and the connection is closed. Other message types have different roles: Open starts the session, Update carries the actual routing information, and Notification signals errors.

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