Allied Telesis VERSION 5.4.3-2.6 Switch User Manual


 
BGP and BGP4+ Configuration
Software Reference Supplement for SwitchBlade® x8112, x908, x900 and x610 Series Switches
2.18 AlliedWare Plus
TM
Operating System - Software Version 5.4.3-2.6 C613-50032-01 REV D
Configuring BGP Graceful Restart
Using BGP graceful restart, the data forwarding plane of the device can continue to
process and forward packets even if the control plane, which is responsible for
determining best paths, fails. The bgp graceful-restart (BGP and BGP4+) command on
page 3.32 sets the maximum time that a graceful-restart neighbor waits to come back up
after a restart. This value is applied to all neighbors unless you explicitly override it by
configuring the corresponding value on the neighbor.
This example shows configuring BGP graceful restart.
Peer 1
bgp_7
Peer 1
1.1.1.1
Peer 2
1.1.1.2
AS100 AS200
awplus(config)#
configure terminal
Enter the Global Configuration mode.
awplus(config-router)#
router bgp 100
Define the BGP routing process. The number 100
specifies the AS number of Peer 1.
awplus(config-router)#
bgp graceful-restart restart-time
180
Configure the maximum time in seconds (180) required
for neighbor(s) to restart.
awplus(config-router)#
bgp graceful-restart stalepath-time
150
Configure the maximum time in seconds (150) to retain
stale paths from the restarting neighbor(s).
awplus(config-router)#
bgp update-delay 120
Configure the maximum time in seconds (120) to defer
initial route selection.
awplus(config-router)#
neighbor 1.1.1.2 remote-as 200
Specify the neighbor’s IP address (1.1.1.2) and the AS
number of the neighbor (200).
awplus(config-router)#
neighbor 1.1.1.2 capability
graceful-restart
Specify the neighbor’s IP address (1.1.1.2) for which the
graceful restart capability is supported.