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Verizon's Accidental Mea Culpa
Barryke writes: Verizon has blamed Netflix for the streaming slowdowns their customers have been seeing. It seems the Verizon blog post defending this accusation has backfired in a spectacular way: The chief has clearly admitted that Verizon has capacity to spare, and is deliberately constraining throughput from network providers. Level3, a major ISP that interconnects with Verizon's networks, responded by showing a diagram that visualizes the underpowered interconnect problem and explaining why Verizon's own post indicates how it restricts data flow. Level3 also offered to pay for the necessary upgrades to Verizon hardware: "... these cards are very cheap, a few thousand dollars for each 10 Gbps card which could support 5,000 streams or more. If that's the case, we'll buy one for them. Maybe they can't afford the small piece of cable between our two ports. If that's the case, we'll provide it. Heck, we'll even install it." I'm curious to see Verizon's response to this straightforward accusation of throttling paying users (which tech-savvy readers were quick to confirm).
Verizonâ(TM)s Accidental Mea Culpa
Mark Taylor / 18 hours ago
David Young, Vice President, Verizon Regulatory Affairs recently published a blog post suggesting that Netflix themselves are responsible for the streaming slowdowns Netflixâ(TM)s customers have been seeing. But his attempt at deception has backfired. He has clearly admitted that Verizon is deliberately constraining capacity from network providers like Level 3 who were chosen by Netflix to deliver video content requested by Verizonâ(TM)s own paying broadband consumers.
His explanation for Netflixâ(TM)s on-screen congestion messages contains a nice little diagram. The diagram shows a lovely uncongested Verizon network, conveniently color-coded in green. It shows a network that has lots of unused capacity at the most busy time of the day. Think about that for a moment: Lots of unused capacity. So point number one is that Verizon has freely admitted that is has the ability to deliver lots of Netflix streams to broadband customers requesting them, at no extra cost. But, for some reason, Verizon has decided that it prefers not to deliver these streams, even though its subscribers have paid it to do so.
The diagram then shows this one little bar, suggestively color-coded in red so you know itâ(TM)s bad. And that is meant to be Level 3 and several other network operators. That bar actually represents a very large global network, and it should be shown in green, since, as we will discuss in a moment, our network has plenty of available capacity as well. In my last blog post, I gave details about how much fiber and how much equipment we deployed to build that network and how many cities around the globe it connects. If the Verizon diagram was to scale, our little red bar is probably bigger than their green network.
But hereâ(TM)s the thing. The utilization of all of those thousands of links across the Level 3 network is much the same as Verizonâ(TM)s depiction of their own network. We engineer it that way. We have to maintain adequate headroom because thatâ(TM)s what we sell to customers. They buy high quality uncongested bandwidth. And in fact, Verizon admits as much because they conveniently show one direction across our network with a peak utilization of 34%; almost exactly what I explained in my last blog post. I can confirm once again that all of those thousands of links on the Level 3 network are managed carefully so that the peak utilizations look very similar to those Verizon show for their own network â" IN BOTH DIRECTIONS.
So why does Verizon show this red bar? And why do they blame Level 3 and the other network operators contracted by Netflix?
Well, as I explained in my last blog post, the bit that is congested is the place where the Level 3 and Verizon networks interconnect. Level 3â(TM)s network interconnects with Verizonâ(TM)s in ten cities; three in Europe and seven in the United States. The aggregate utilization of those interconnections in Europe on July 8, 2014 was 18% (a region where Verizon does NOT sell broadband to its customers). The utilization of those interconnections in the United States (where Verizon sells broadband to its customers and sees Level 3 and online video providers such as Netflix as competitors to its own CDN and pay TV businesses) was about 100%. And to be more specific, as Mr. Young pointed out, that was 100% utilization in the direction of flow from the Level 3 network to the Verizon network.
So letâ(TM)s look at what that means in one of those locations. The one Verizon picked in its diagram: Los Angeles. All of the Verizon FiOS customers in Southern California likely get some of their content through this interconnection location. It is in a single building. And boils down to a router Level 3 owns, a router Verizon owns and four 10Gbps Ethernet ports on each router. A small cable runs between each of those ports to connect them together. This diagram is far simpler than the Verizon diagram and shows exactly where the con
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