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Configuring BGP Starting BGP
OmniSwitch 6800/6850/9000 Advanced Routing Configuration Guide December 2007 page 4-19
Starting BGP
Before BGP is operational on your router you must load it to running memory and then administratively
enable the protocol using the ip load bgp and ip bgp status commands. Follow these steps to start BGP.
1 Install advanced routing image file in the active boot directory.
2 Load the BGP image into running memory by issuing the following command:
-> ip load bgp
3 Administratively enable BGP by issuing the following command:
-> ip bgp status enable
Disabling BGP
You can administratively disable BGP by issuing the following command:
-> ip bgp status disable
Many BGP global commands require that you disable the protocol before changing parameters. The
following functions and commands require that you first disable BGP before issuing them:
Parameters Requiring that BGP first be disabled
Function Command
Router’s AS number ip bgp autonomous-system
Confederation identifier ip bgp confederation identifier
Default local preference ip bgp default local-preference
IGP synchronization ip bgp synchronization
AS Path Comparison ip bgp bestpath as-path ignore
MED comparison ip bgp always-compare-med
Substitute missing MED value ip bgp bestpath med missing-as-
worst
Equal-cost multi-path comparison ip bgp maximum-paths
Route reflection ip bgp client-to-client reflection
Cluster ID in route reflector group ip bgp cluster-id
Fast External Fail Over ip bgp fast-external-failover
Enable logging of peer changes ip bgp log-neighbor-changes
Tag routes from OSPF ip bgp confederation identifier