Alcatel-Lucent 6850-48 Guida Di Riferimento
BGP Commands
OmniSwitch CLI Reference Guide
September 2009
page 44-15
ip bgp fast-external-failover
Enables fast external failover (FEFO). When enabled, FEFO resets a session when a link to a directly
connected external peer is operationally down. The BGP speaker will fall back to Idle and then wait for a
connection retry by the external peer that went down.
connected external peer is operationally down. The BGP speaker will fall back to Idle and then wait for a
connection retry by the external peer that went down.
ip bgp fast-external-failover
no ip bgp fast-external-failover
Syntax Definitions
N/A
Defaults
This command is disabled by default.
Platforms Supported
OmniSwitch 6850, 6855, 9000, 9000E
Usage Guidelines
• Use the no form of this command to disable Fast External Failover.
• When enabled, this command allows BGP to take immediate action when a directly connected inter-
face, on which an external BGP session is established, goes down. Normally BGP relies on TCP to
manage peer connections. Fast External failover improves upon TCP by resetting connections as soon
as they go down.
manage peer connections. Fast External failover improves upon TCP by resetting connections as soon
as they go down.
• The BGP protocol must be disabled (using the
command) before using this command.
Examples
-> ip bgp fast-external-failover
-> no ip bgp fast-external-failover
Release History
Release 6.1; command was introduced.