User guide

Setting Global BGP Parameters Configuring BGP
page 4-20 OmniSwitch AOS Release 7 Advanced Routing Configuration Guide March 2015
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