[115481] in North American Network Operators' Group
Re: Use of Default in the DFZ: banned in philly,
daemon@ATHENA.MIT.EDU (Randy Bush)
Wed Jun 24 13:58:31 2009
From: Randy Bush <randy@psg.com>
To: Ricardo Oliveira <rveloso@cs.ucla.edu>
In-Reply-To: <2BE52E9B-6E13-4154-B88E-A683EF221FE0@cs.ucla.edu>
Date: Wed, 24 Jun 2009 10:58:09 -0700
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
OK,a buckety of salt.
From my pov, a stub has zero downstreams.
randy, on iPhone
On Jun 24, 2009, at 10:39, Ricardo Oliveira <rveloso@cs.ucla.edu> wrote:
> Jack,
> Please give me your ASN and i'll double check our data. As long as
> the network has 4 or less downstreams, it's being labeled as "stub".
> More details here:
> http://www.cs.ucla.edu/~rveloso/papers/completeness-ton.pdf
>
> Thanks,
>
> --Ricardo
>
> On Jun 24, 2009, at 6:44 AM, Jack Bates wrote:
>
>> Randy Bush wrote:
>>> please do check your as at <http://psg.com/default/> and then
>>> actually
>>> look at your router config. i found one of my routers still had a
>>> default from when i was bringing it up.
>>
>> Ick. Nothing was right. Reported as mixed, though that may be my
>> fault and not your testing. Hmmm. Or your test didn't take some
>> things into account like changes over time. Normally I keep a
>> default route available, but due to changing IGP internally I
>> actually have a default which points interior from the edge
>> routers. So when I shut down the last BGP session on the old cisco,
>> the defaults to the transits went away.
>>
>> Was also reported as a stub. Glad to know that I don't have BGP
>> customers. Oh, wait, I do. :)
>>
>>
>> Jack
>
