nanog mailing list archives

Re: Cogent admits to QoSing down streaming


From: Jared Mauch <jared () puck nether net>
Date: Thu, 6 Nov 2014 11:23:51 -0500


On Nov 6, 2014, at 11:12 AM, Patrick W. Gilmore <patrick () ianai net> wrote:

<http://blog.streamingmedia.com/2014/11/cogent-now-admits-slowed-netflixs-traffic-creating-fast-lane-slow-lane.html>

This is interesting. And it will be detrimental to network neutrality supporters. Cogent admits that while they were 
publicly complaining about other networks congesting links, they were using QoS to make the problem look worse.

One of the problems in "tech" is most people do not realize tone is important, not just substance. There was - still 
is! - congestion in many places where consumers have one or at most two choice of providers. Even in places where 
there are two providers, both are frequently congested. Instead of discussing the fact there is no functioning 
market, no choice for the average end user, and how to fix it, we will now spend a ton of time arguing whether 
anything is wrong at all because Cogent did this.

Wouldn't you rather be discussing whether 4 Mbps is really broadband? (Anyone else have flashbacks to "640K is enough 
for anyone!"?) Or how many people have more than one choice at 25 Mbps? Or whether a company with a terminating 
access monopoly can intentionally congest its edge to charge monopoly rents on the content providers their paying 
customers are trying to access? I know I would.

Instead, we'll be talking about how things are not really bad, Cogent just made it look bad on purpose. The subtlety 
of "it _IS_ bad, Cogent just shifted some of the burden from VoIP to streaming" is not something that plays well in a 
30 second sound bite, or at congressional hearings.

It's enough to make one consider giving up the idea of having a functioning, useful Internet.

Network SLAs are usually on-net.  Deciding how to queue packets down a congested link is certainly something many 
places have done for years, including when people did Random Early Discard(RED), Weighted RED or even more advanced AQM 
when there may be one-way congestion (Eg: cable/dsl uplink) at the home.

Some people are trying to document/improve this with ideas, such as: 
https://tools.ietf.org/html/draft-hoeiland-joergensen-aqm-fq-codel

As a technical issue I always want to see congestion addressed promptly with either changes in the traffic pattern or 
network upgrades.  If you have customers on a fixed monthly plan regardless of usage and your capital model doesn’t 
address that, or you hide the network costs in other ‘bundles’ it may become harder to do the accounting necessary to 
fund those upgrades.  I do wish it were easier to get symmetric speeds on DOCSIS/xDSL technologies.

- Jared

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