Command Line Reference Guide

bgp four-octet-as-support
Enable 4-byte support for the BGP process.
S5000
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 9.0(1.3) Introduced on the S5000.
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.
When creating Confederations, all the routers in the Confederation must be 4- or 2-byte
identified routers. You cannot mix them.
Where the 2-byte format is 1 to 65535, the 4-byte format is 1 to 4294967295. Both formats are
accepted and the advertisements reflect the entered format.
For more information about using the 2- or 4-byte format, refer to the FTOS Configuration Guide .
bgp graceful-restart
Enable graceful restart on a BGP neighbor, a BGP node, or designate a local router to support graceful restart as a
receiver only.
S5000
Syntax
bgp graceful-restart [restart-time seconds] [stale-path-time
seconds] [role receiver-only]
To return to the default, use the no bgp graceful-restart command.
Parameters
restart-time
seconds
Enter the keyword restart-time followed by the maximum
number of seconds needed to restart and bring-up all the peers. The
range is 1 to 3600 seconds. The default is 120 seconds.
stale-path-time
seconds
Enter the keyword stale-path-time followed by the maximum
number of seconds to wait before restarting a peer’s stale paths. The
default is
360 seconds.
role receiver-only Enter the keyword role receiver-only to designate the local
router to support graceful restart as a receiver only.
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