Level3 (3356/3549) changes routing policy
Dave.Siegel at level3.com
Thu Aug 2 08:53:38 CDT 2012
Thanks David, you hit the nail on the head on both points.
Level 3 made the routing policy change last November, roughly 6 weeks after the acquisition of Global Crossing.
From: David Reader [mailto:david.reader at zeninternet.co.uk]
Sent: Thursday, August 02, 2012 6:41 AM
To: nanog at nanog.org
Subject: Re: Level3 (3356/3549) changes routing policy
On Thu, 2 Aug 2012 10:33:38 +0200
Fredy Kuenzler <kuenzler at init7.net> wrote:
> From my observation Level3 has recently changed their routing policy.
> It seems that 3356 always prefers customer prefixes of 3549,
> regardless of the AS path length. Example (seen from 3356):
> is preferred over
> Considering that both 2914 and 3549 are peers of 3356, and 13030 is a
> customer of 3549, 3356 seems to give higher local-pref on the longer
> AS-path, likely to increase traffic and revenue of their sister network 3549.
Level 3 owns both 3356 and 3549.
They're simply preferring to have their customers pay them, rather than a 3rd party.
I don't think it's suprising at all that they're doing it. If, as you think, it's only happened recently then what is suprising is that it didn't happen sooner IMO.
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