From: tycampbell@comcast.net
Date: Fri Jun 11 2004 - 09:44:24 GMT-3
thanks...yes..I did try it without it and the link didn't come up until I added the ebgp-multihop...just wanted to make sure :-)
> Yep. Inter-SUB-AS links are considered "external", so you'll need multihop to
> link sub-ASs if you use loopbacks...
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> tycampbell@comcast.net
> Sent: vrijdag 11 juni 2004 13:36
> To: ccielab@groupstudy.com
> Subject: BGP Confederation peering question
>
>
> When do a confederation, and all the neighbor peering is done with loopbacks, if
> the sub-AS is different, should you use ebgp-multihop ? I know that it is not
> done for routers in the same AS, but was wondering if it was needed within the
> confederation also, for a sub-AS
>
> for example..
> r1
> int loop0
> ip add 10.2.2.2 255.255.255.255
>
> router bgp 65234
> bgp confed id 400
> bgp confed peer 65321
> nei 10.1.1.1 remote 65321
> nei 10.1.1.1 update-source loop0
> nei 10.1.1.1 ebgp-mutlihop 2
>
>
> r2
> int loop0
> ip add 10.1.1.1 255.255.255.255
>
> router bgp 65321
> bgp confed id 400
> bgp confed peer 65234
> nei 10.2.2.2 remote 65234
> nei 10.2.2.2 update-source loop0
> nei 10.2.2.2 ebgp-multihop 2
>
>
> Thanks!
>
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