[54255] in North American Network Operators' Group
Re: Cogent and Level3 Peering Issues
daemon@ATHENA.MIT.EDU (alex@yuriev.com)
Wed Dec 18 18:11:23 2002
Date: Wed, 18 Dec 2002 18:25:08 -0500 (EST)
From: alex@yuriev.com
To: william@elan.net
Cc: nanog@merit.edu
In-Reply-To: <Pine.LNX.4.33.0212181421440.2311-100000@sokol.elan.net>
Errors-To: owner-nanog-outgoing@merit.edu
> Of course, your right about what needs to be fixed! But situation with
> cogent is such that I do not have that option. Their peering link with
> level3 is congested because of all the traffic going to AOL and some of
> traffic destined to me is going through same link the other way and
> getting jammed as a sideeffect as well. I route aol-destined traffic from
> my net to provider other then cogent - but how do I tell AOL and L3 (and
> only them) that best path to me is through somebody else?
route-map cogent-ick permit 10
match community-list <aggregate-only>
set as-path prepend <iamuglypath> <iamuglypath> <iamuglypath>
route-map cogent-ick deny 20
match community-list <deaggregated-routes>
route-map happy-with-backup permit 10
match community-list <deaggregated-routes>
route-map happy-with-backup deny 20
match community-list <aggregate-only>
> Basil is right - the best way to deal with that would be for cogent to
> provide special community that would allow me to direct cogent to prepend
> several of their ASN to level3 advertisements.
Cogent doesnot do anything custom.
Alex
