From: Michael Brooks (michaeljbrooks@gmail.com)
Date: Fri Dec 30 2005 - 19:30:55 GMT-3
I need some clarification in regards to a router in a BGP confederation
forming an ebgp peering relationship.
R1 (AS: 100/Confed AS 65026) <----> ISP-R2 (AS 200)
On R1 would you configure:
R1:
router bgp 65026
neighbor 1.1.1.2 remote-as 200 (isp)
*bgp confederation identifier 100*
***OR****
R1:
router bgp 65026
neighbor 1.1.1.2 remote-as 200 (isp)
*neighbor 1.1.1.2 local-as 100
*
**********************
Both configurations appear to work, but I am curious to know what the
preferred method is and why ? Also, I noticed the "local-as" command takes
precedence over the "confederation identifier" command when both configured
at the same time. Are these commands basically inter-changeable when
configuring ebgp peering relationships (besides the identification of the
neighbor with local-as command). Your input would be greatly aprreciated.
Thanks,
Mike
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