The ebgp-interface-sensitive command enables rapid EBGP connection reset.
The undo ebgp-interface-sensitive disables the function.
By default, rapid EBGP connection reset is enabled.
BGP view, BGP-VPN instance IPv4 address family view, BGP-VPN instance IPv6 address family view, BGP-IPv4 unicast address family view, BGP-IPv6 unicast address family view
Usage Scenario
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 immediately reset the EBGP session that is directly connected on the interface, then BGP uses 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.
Precautions
If the interface used for a BGP connection alternates between Up and Down states, it would be better not to run the ebgp-interface-sensitive command to prevent route flapping.