Version Description
7.7.1.0 Introduced on the C-Series.
Usage
Information The bgp fast-external-fallover command appears in the show config
command output.
The fast external fallover configuration is applied only after you manually reset all
the existing BGP sessions. As a result, after you execute this command, you must
also manually execute the clear ip bgp command in order for the configuration
to take effect.
bgp four-octet-as-support
Enable 4-byte support for the BGP process.
S4820T
Syntax bgp four-octet-as-support
To disable fast external failover, use the no bgp four-octet-as-support
command.
Defaults Disabled (supports 2–byte format)
Command
Modes
ROUTER BGP
Command
History This guide is platform-specific. For command information about other platforms,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.7(0.0) Introduced on the S6000–ON.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.8.1.0 Introduced on the S-Series.
7.7.1.0 Introduced on the C-Series.
Usage
Information Routers supporting 4-byte ASNs advertise that function in the OPEN message. The
behavior of a 4-byte router is slightly different depending on whether it is speaking
to a 2-byte router or a 4-byte router.
Border Gateway Protocol 421