CenturyLink/Level 3 combined AS

Fri Jun 7 16:49:20 UTC 2019

That '2000 peer ASN's' value is likely very, very inflated. I have prefixes
that would look like I am peering with 3549 directly in many places that I
do not.

L3 has for some time had a partial as-merge community that you can set so
that if you announce a prefix to 3356, they'll mirror it over to 3549 in
the same location and strip 3356 from the as-path. The reverse also works
for an announcement to 3549 mirrored over to 3356. They're doing some
inter-as option c juju to make all that work.

Doesn't change the point that 3549 is still around 8 years later and likely
will be for 8 more, but yeah. :) I'm sure efforts to make that happen have
a plethora of roadblocks such that it would cost 10x more to get rid of it
than it would to just leave it as is and just shrink it when possible.

On Fri, Jun 7, 2019 at 12:11 PM Mike Hammett <nanog at ics-il.net> wrote:

> I wouldn't expect them to be integrated for at least another decade.
> Global Crossing AS3549 still exists with over 2,000 peer ASNs, yet Level 3
> acquired them in 2011. Time Warner Telecom was acquired in 2014 and it
> still has 89 peer ASNs.
>
> Centurylink bought Digital Teleport in 2003 and their ASN is still out
> there.
>
>
>
> -----
> Mike Hammett
> Intelligent Computing Solutions <http://www.ics-il.com/>
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> ------------------------------
> *From: *"Darin Steffl" <darin.steffl at mnwifi.com>
> *To: *"North American Network Operators' Group" <nanog at nanog.org>
> *Sent: *Friday, June 7, 2019 11:01:46 AM
> *Subject: *CenturyLink/Level 3 combined AS
>
> Hey all,
>
> Are there plans for CL and Level3 to combine AS's into one network?
>
> If not, do they actively peer and route traffic through each other's
> networks at least?
>
> Basically we're looking at picking up 1G of CL and wondering if it's near
> the same quality as Level3 in terms of latency and packet loss.
>
> Thanks
>
> --
> Darin Steffl
> Minnesota WiFi
> www.mnwifi.com
> 507-634-WiFi
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