Setting Automatic Fallover

You can use the bgp fast-external-fallover command to specify that in the event of the failure of a link to any adjacent external peer, the BGP session is immediately and automatically brought down rather than waiting for the TCP connection to fail or for the hold timer to expire.

bgp fast-external-fallover

• Use to immediately bring down a BGP session if the link to an adjacent external peer fails.
• If you do not issue this command, the BGP session is not brought down in the event of a link failure until the TCP connection fails or the hold timer expires.
• This command takes effect immediately.
• Use the no version to stop automatically bringing down the session in the event of link failure.
• See bgp fast-external-fallover.

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