L(3) / 4/8 / multihoming

Fri Sep 12 19:51:40 UTC 2008

-----Original Message-----
From: Joel Jaeggli [mailto:joelja at bogus.com] 
Sent: Friday, September 12, 2008 2:34 PM
To: Jay R. Ashworth
Cc: nanog at nanog.org
Subject: Re: L(3) / 4/8 / multihoming

Jay R. Ashworth wrote:
>> On Wed, Sep 10, 2008 at 04:50:15PM -0400, Jay R. Ashworth wrote:
>>> I see in http://www.onesc.net/communities/as3356/ that L3 doesn't
permit
>>> customers to multihome the 4/8 space that they inherited from BBN,
via
>>> GTE, etc, ad nauseum...

Or, they inherited the directive - keep 4/8 pristine, aggregated, and
absolute (BBN land - customers, infra), from BBN, too !?!

>>> and I'm curious whether anyone knows why?  It sounds like something
there
>>> might be an interesting story in...

Besides the obvious; where their other upstream became transit for (a
good portion of) 4/8, be it their or their other upstream's fault in
screwing up the adverts!?! I imagine those numbered out of 4/8 that
wished to multihome to another provider, requested IP renumbering from
BBN from one of BBN's non-4/8 (promiscuous) blocks.

But, I speculate.

~
Ajeet Bagga
Sr. Network Engineer
EMC