Could someone from Comcast's NOC contact me off-list? We're seeing some traffic take a strange route on its way back to some Comcast prefixes from several of our systems. Thank you!
-Rob
Rob:
Comcast engineers are on the NANOG list. If you reply with IP and traceroute they can help u.
I hear there are networks at capacity b/c of ratios. Everybody wants to send Comcast traffic, but noone wants to send money.
V
The flip side of this argument is that as it's mostly an access network
with an asymmetric last mile infrastructure, the natural aggregate internet
traffic profile of the total sum (bytes-in, bytes-out) counted at the
customer hand-off points will tend to be weighted in one direction.
For providers who have an overall asymmetric traffic profile towards
Comcast, it's a matter of perspective as to whether you view this as the
providers sending Comcast traffic or Comcast customers pulling it. So it's
hardly surprising that there are disagreements about who gets to pay the
other for the interconnection arrangements.
Nick
And the sad surprising part of all this is that they don't do public peering, which would go long ways to reduce pressures on their network...
Nor do the wish to sell transit to their network at a reasonable rate ..
What a shame!
Faisal
Saying that it's a matter of perspective is a false dichotomy.
If the providers go away, the Comcast customers will pull traffic from
other providers.
If the *customers* go away...
Nope; Comcast is acting as the agent of its customers to pull in traffic
they want to see, and if it isn't charging them enough for that, that is
*Comcast's* problem.
It's really a bright-line answer.
Cheers,
-- jra
Yeah, I've been hitting congested links with several of my customers. This was just a case of one of our customer's prefixes taking an extra long journey from one region to another.
Thank you to all who responded! I think we might on our way to remediating this small issue!
-Rob
What congested links r u seeing?
When we contacted Comcast for peering, Ren Provo explain that ratios r balanced b/c of their media and cloud products... imbalance is common misunderstanding.
Vinod
Uhm, no I did not. I'd be happy to review your request. Send over
your ASN to the proper channels please. -ren_provo@cable.comcast.com
ExactlyŠ
Jason
Comcast's customers send money to Comcast in order to receive whatever they
want from other networks. With that money, Comcast should invest in
infrastructure so that it's network is not saturated anymore. Isn't this
how IPSs work ? 
From: Eugeniu Patrascu [mailto:eugen@imacandi.net]
Comcast's customers send money to Comcast in order to receive whatever
they
want from other networks. With that money, Comcast should invest in
infrastructure so that it's network is not saturated anymore. Isn't this
how IPSs work ?
In competitive markets, that's the theory. That would require one to test with...
Jamie
Its a bit more complicated than that, especially when you're a large
operator that all the content providers need to be able to reach and you
have a (largely) converged backbone system.
My comment was more or less directed to the person that said "losts of
people want to send traffic to comcast, but no one wants to send money". I
find it very dangerous and provocative, and somewhat on the same line with
others that believe in the "sender party pays" crap they're trying to force
onto the market.
Eugen and NANOG I'm sorry. My earlier comment was from conversation my last employer had about peering with Comcast where they told us they had balanced ratios. You can see from Ren Provo that is no longer true. This is politics as usual, playing the silly game. I am sorry to offend. I wish they work things out with Google so Youtube will stop buffering.
Regards
Vinod