Some truth about Comcast - WikiLeaks style

Tue Dec 14 08:11:56 UTC 2010

On Tue, Dec 14, 2010 at 02:54:13AM -0500, Jeffrey Lyon wrote:
> gin-nto-icore1 is a Tata router at Equinix in NY. Whether or not that
> port belongs to Comcast is anyone's guess.

From Tata's looking glass:

  3 Vlan550.icore1.NTO-NewYork.as6453.net (209.58.26.78) 4 msec
    Vlan551.icore1.NTO-NewYork.as6453.net (209.58.26.82) 4 msec 0 msec
  4 pos-1-9-0-0-cr01.newyork.ny.ibone.comcast.net (68.86.86.41) [AS 7922] 4 msec 4 msec 4 msec

As far as I can tell their DNS doesn't expose Tata's router port names 
at all:

77.26.58.209.in-addr.arpa domain name pointer Vlan550.icore1.NTO-NewYork.as6453.net.
78.26.58.209.in-addr.arpa domain name pointer Vlan550.icore1.NTO-NewYork.as6453.net.
81.26.58.209.in-addr.arpa domain name pointer Vlan551.icore1.NTO-NewYork.as6453.net.
82.26.58.209.in-addr.arpa domain name pointer Vlan551.icore1.NTO-NewYork.as6453.net.
41.86.86.68.in-addr.arpa domain name pointer pos-1-9-0-0-cr01.newyork.ny.ibone.comcast.net.
42.86.86.68.in-addr.arpa domain name pointer pos-1-0-0-0-pe01.111eighthave.ny.ibone.comcast.net.

Though I suppose if someone was photoshopping it, it would be pretty 
obvious for them to stick something that does show up in DNS into the 
graphs, so that doesn't exactly prove much. I'm also assuming Comcast 
wouldn't be very happy to have these out in public, so there is pretty 
much no way you're going to see a leaked graph that ISN'T from an 
anonymous source.

FWIW these graphs pretty much reflect the massive congestion that I've 
been observing between Tata and Comcast. I've also seen some third party 
Smokeping graphs which visually show the rate of loss, and the pattern 
looks very very similar, but I'll let someone who actually maintains 
them be the one to post them.

-- 
Richard A Steenbergen <ras at e-gerbil.net>       http://www.e-gerbil.net/ras
GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)