Setting Global BGP Parameters
Configuring BGP
page 3-20
OmniSwitch AOS Release 7 Advanced Routing Configuration Guide
March 2011
Setting Global BGP Parameters
Many BGP parameters are applied on a router-wide basis. These parameters are referred to as
global
BGP
parameters. These values are taken by BGP peers in the router unless explicitly overridden by a BGP peer
command. This section describes how to enable or disable BGP global parameters.
Global BGP Defaults
Parameter Description
Command
Default Value/Comments
Enable BGP
ip bgp admin-state
Disabled
Router’s AS number
ip bgp autonomous-system
1
Confederation Number
ip bgp confederation identifier
No confederations configured
Configure support for graceful
restart on a BGP router
ip bgp graceful-restart
Enabled
Configure the grace period (in
seconds) for a graceful BGP
restart
ip bgp graceful-restart restart-
interval
90
Configures the time interval for
advertising local AS networks
ip bgp as-origin-interval
15 seconds
Default local preference
ip bgp default local-preference
100
IGP synchronization
ip bgp synchronization
Disabled
AS Path Comparison
ip bgp bestpath as-path ignore
Enabled
MED comparison on external
peers
ip bgp always-compare-med
Disabled
Substitute missing MED value
ip bgp bestpath med missing-as-
worst
Lowest (best) possible value
Equal-cost multi-path support
ip bgp maximum-paths
Disabled
Route reflection
ip bgp client-to-client reflection
Disabled
Cluster ID in route reflector group
ip bgp cluster-id
0.0.0.0
Fast External Fail Over
ip bgp fast-external-failover
Disabled
Enable logging of peer changes
ip bgp log-neighbor-changes
Disabled
Route dampening
ip bgp dampening
Disabled