Why Is Not the BGP Connection Disconnected Immediately After the shutdown Command Is Run on Either Interface Between Two Devices?

yWX511501 · Created Sep 7, 2018 09:36:15

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Mark.hu · Created Sep 29, 2018 06:05:43

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Why Is Not the BGP Connection Disconnected Immediately After the shutdown Command Is Run on Either Interface Between Two Devices?-2765139-1

Why Is Not the BGP Connection Disconnected Immediately After the shutdown Command Is Run on Either Interface Between Two Devices?-2765139-2

Skay · Created Sep 29, 2018 06:38:04

If the ebgp-interface-sensitive command is not configured, the system does not immediately select the sub-optimal route for packet transmission when an interface goes Down. Instead, the system waits for a period of time (defaulting to 180 seconds) before checking whether another interface can be used to send packets to the same destination address. This will interrupt services for a period of time. If the ebgp-interface-sensitive command is run, BGP can quickly detect EBGP link faults and use another interface to establish a BGP peer relationship with the remote peer.

When the interface used for a BGP connection alternates between Up and Down states, running the undo ebgp-interface-sensitive command can prevent the repeated reestablishment and deletion of the BGP session in the event of route flapping. This reduces the use of network bandwidth.

yangyong · Created Sep 30, 2018 13:46:03

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Why Is Not the BGP Connection Disconnected Immediately After the shutdown Command Is Run on Either Interface Between Two Devices?

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