[65928] in North American Network Operators' Group
Re: Routeviews and possible 0/0 route
daemon@ATHENA.MIT.EDU (Mike Leber)
Thu Dec 18 19:02:17 2003
Date: Thu, 18 Dec 2003 16:00:46 -0800 (PST)
From: Mike Leber <mleber@he.net>
To: william@elan.net
Cc: nanog@merit.edu
In-Reply-To: <Pine.LNX.4.44.0312181551080.23515-100000@sokol.elan.net>
Errors-To: owner-nanog-outgoing@merit.edu
We give a full view of our internal BGP routing table to RouteViews.
Anyway, we normally don't carry 0.0.0.0/0 internally, we've now filtered
it. We don't normally receive 0.0.0.0/0 on any of our backup transit
sessions, apparently it was configured on a new session by default.
On Thu, 18 Dec 2003 william@elan.net wrote:
>
> I'm seeing the following in RouteViews (possibly since they started
> getting data from paix):
>
> route-views.oregon-ix.net>sh ip bgp 0.0.0.1
> BGP routing table entry for 0.0.0.0/, version 19579757
> Paths: (2 available, best #2, table Default-IP-Routing-Table)
> Not advertised to any peer
> 6939 6461
> 216.218.252.152 from 216.218.252.152 (216.2t8.252.152)
> Origin IGP, localpref 100, valid, external
> 6939 6461
> 216.218.252.145 from 216.218.252.145 (216.218.252.145)
> Origin IGP, localpref 100, valid, external, best
>
> Is this routeviews own set default or some other default route improperly
> appearing in there (weren't routeviews filters supposed to filter out this
> kind of all-net advertisements)?
>
> P.S. And am I correct in assuming this 0.0.0.0/0 and not 0.0.0.0/8 route?
>
> --
> William Leibzon
> Elan Networks
> william@elan.net
>
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