From: Alexei Monastyrnyi (alexeim@orcsoftware.com)
Date: Tue Oct 24 2006 - 13:54:52 ART
Hi.
If I understand right, BGP process is now aware of it is in
"confederation mode" without "bgp confed id xxx" (if one can say so,
sorry - it might sound clumsy), so it adds its AS number to AS path in
usual way... which it shouldn't do.
A.
Mohamed T. Kondela wrote:
> Hi group
>
> While configuring BGP confederation, Is it necessary to type 'bgp
> confederation id xx' on all routers forming the confederation..?
>
> In my home lab, I was forced to use this command on all routers,
> otherwise it was returning an error message "%BGP-6-ASPATH: Invalid AS
> path" on neighboring confed member routers (2621XM ios 12.3) and transit
> routes were not received by them, But locally generated routes were
> exchanged between directly peered routers.
>
> Once I use the command 'confed id ' in all routers everything was fine
> and transit routes were exchanged between AS border routers and confed
> members. Now, some documentation + cisco press says that you only need
> to use the 'confed id' command in AS border routers only, I believe NMC
> tech library also taught me the same thing.
>
> But in reality it is different. Brian MC was demonstrating this in CoD
> and he did it on all confed routers. Now, is it really a IOS issue..?
>
> Regards
> Mohamed T. Kondela
> Senior Network Engineer
> IT Dept.
> Fax: 4473037 x 303
> mtaib@sagia.gov.sa
> Saudi Arabian General Investment Authority
>
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