Enables BGP fast external fallover functionality.
This command has no arguments or variables.
Disabled.
This command enables the BGP fast external fallover on the router. This command applies to all directly-connected external BGP neighbors.
When BGP fast external fallover is enabled, the directly-connected EBGP neighbor session is immediately reset when the connecting link goes down.
If BGP fast external fallover is disabled, BGP waits until the default hold timer expires (3 keepalives) to reset the neighboring session. In addition, BGP might teardown the session somewhat earlier than hold timer expiry if BGP detects that the TCP session and it's directly connected link is broken (BGP detects this while sending or receiving data from TCP socket).
The following command enables BGP fast external fallover:
enable bgp fast-external-fallover
This command was first available in ExtremeXOS 12.1.
This command is available on platforms that support the appropriate license. For complete information about software licensing, including how to obtain and upgrade your license and which licenses support the BGP feature, see the ExtremeXOS and Switch Engine 31.7 Feature License Requirements document.