[65923] in North American Network Operators' Group
Re: Routeviews and possible 0/0 route
daemon@ATHENA.MIT.EDU (David Meyer)
Thu Dec 18 18:13:00 2003
Date: Thu, 18 Dec 2003 15:12:17 -0800
From: David Meyer <dmm@1-4-5.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
On Thu, Dec 18, 2003 at 04:05:56PM -0800, 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)?
Nope to the former. Someone (6461) is advertising it. We
haven't traditionally filtered what we receive from our
peers. Note also that route views does not use routes from
the peers for forwarding traffic.
Dave
