Companies with content to send to the tens of millions of Comcast customers could send their traffic through their upstream ISP, or they could send it directly to Comcast for about the same price. Recall from Chapter 4 that Paid Peering is Internet Peering but with some exchange of compensation involved.Ĭomcast priced their metered paid peering service at about the market price for Internet Transit. Since a large portion of Internet traffic is destined to be video traffic asymmetrically delivered to the access networks, such a Peering Policy effectively ensures that this traffic can not be freely peered.Ĭomcast started offering a Paid Peering service for those that did not meet their peering prerequisites. These companies are in the business of getting video objects to the eyeballs and have very little traffic to pull from Comcast. Video content delivery companies such as CDNs and content-heavy ISPs certainly won’t have balanced peering ratios with access networks. Very few peering candidates have or will ever have a balanced ratio to offer to an access network. Comcast customers consist of tens of millions of eyeballs primarily pulling down content from the Internet.Internet video tends to be massively asymmetric (as high as 30:1), and. ![]() Internet video is or soon will be the dominant Internet application, and.This peering ratio prerequisite and the ratio value is somewhat common in the industry. Some in the industry have said that the specific not-to-exceed-ratio is around 2:1. Traffic in the inbound direction (to Comcast customers) had to be (roughly) balanced with the outbound direction (from Comcast customers). In the mid-2000s, Comcast put in place a Peering Policy stating that they require (among other things) that traffic volumes exchanged be roughly balanced. Internet Peering Ecosystem.Ĭomcast Peering Policy. Content distributers need to be able to deliver increasing volumes of video traffic with very high quality.Īt the same time, significant change occurred in the U.S. Video traffic dominating the Internet and the requirement for flawless video, taken together, highlight the importance of an optimized Internet Peering Ecosystem. called “artifacts” in industry jargon) in a movie video stream cause a break in the “suspension of disbelief.” This effectively destroys a video watching experience for the end user. They said that disruptions (pixilation, freeze frames, audio garbling, etc. Separately, the movie industry people emphasized that video is unlike other applications. ![]() Internet traffic was video, according to conversations with ISPs. As stated above, in 2011, at least 40-50% of all U.S. Since Internet users primarily download content, Access Network traffic is generally in-bound (towards the end-user). Definition: Access Networks (also known as “eyeball networks”) are Internet Service Providers that sell Internet access to end-users.Īccess Networks include cable companies, telephone companies and wireless Internet providers.
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