Routeviews and possible 0/0 route
Mike Leber
mleber at he.net
Fri Dec 19 00:00:46 UTC 2003
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 at 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 at elan.net
>
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