Command Line Reference Guide

Related
Commands
• show ip bgp neighbors – views the information exchanged by BGP neighbors.
• show ip protocols – views information on routing protocols.
bgp fast-external-fallover
Enable the fast external failover feature, which immediately resets the BGP session if a link to a directly
connected external peer fails.
Z9500
Syntax
bgp fast-external-fallover
To disable fast external fallover, use the no bgp fast-external-fallover
command.
Defaults Enabled.
Command
Modes
ROUTER BGP
Command
History
Version 9.2(1.0) Introduced on the Z9500.
Version 8.2.1.0 Introduced on the E-Series ExaScale.
Version 7.4.1.0 Introduced
Usage
Information
The bgp fast-external-fallover command appears in the show config
command output.
bgp four-octet-as-support
Enable 4-byte support for the BGP process.
Z9500
Syntax
bgp four-octet-as-support
To disable fast external fallover, use the no bgp four-octet-as-support
command.
Defaults Disabled (supports 2-Byte format).
Command
Modes
ROUTER BGP
Command
History
Version Description
9.2(1.0) Introduced on the Z9500.
8.2.1.0 Introduced on the E-Series ExaScale.
7.7.1.0 Introduced
Border Gateway Protocol
475