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To customer houses ? How many CDNs do they have ? Take "last mile" literally and divide the US in a big grid of 1x1 mile squares. If Netflix was able to dispa

by maxhou 12y ago

To customer houses ? How many CDNs do they have ? Take "last mile" literally and divide the US in a big grid of 1x1 mile squares. If Netflix was able to dispatch its traffic up to each of these squares, there wouldn't be any problem. but there wouldn't be any Netflix either :)

pdonis 12y ago
> If Netflix was able to dispatch its traffic up to each of these squares That's not how a CDN works. Look at the diagram in the article, between the fourth and fifth paragraphs. Every other ISP uses transit networks to distribute Netflix traffic (like all other traffic) to its subscribers. Netflix puts its content on CDNs that are conveniently located to make the transit networks' job easier, by making "netflix.com" endpoints closer to large populations of subscribers. Somehow all the other ISPs manage to "route traffic to customer houses" using that arrangement. Why does Comcast have to be different?
- irishjohnnie 12y ago
  I think maxhou is referring to the segment of the network from Comcast's (or any other ISP's) local data center to its box (I think they're called ATM switches) and eventually your house
  - pdonis 12y ago
    Yes; so what? The traffic always has to travel over that segment, regardless of whether the ISP is working with transit networks or not. So whatever the difference supposedly is between Comcast and all the other ISPs, it isn't that. So what is the difference?
    - irishjohnnie 12y ago
      The difference is how Comcast interprets its competitive position compared to its peers. The barriers to entry in the last mile is high regardless of the ISP but it is willing to leverage/extract rents/push the boundaries more compared to others that may be building goodwill/not push the regulatory boundary/sitting and waiting. In other words it is acting like a monopolist or a shrewd business.
      - pdonis 12y ago
        In other words, there is no technical reason why it's any harder for Comcast to "route traffic to the customer's house" using the same arrangement as other ISPs. The reason it doesn't is that it's trying to get paid twice for the same traffic, which is a "business" reason (at least for some value of "business"), not a technical reason.
        irishjohnnie 12y ago
        Yes, "trying to get paid twice" is what "extract more rent" and "rent seeking" means in other replies including mine.

by maxhou 12y ago

pdonis 12y ago

> If Netflix was able to dispatch its traffic up to each of these squares That's not how a CDN works. Look at the diagram in the article, between the fourth and fifth paragraphs. Every other ISP uses transit networks to distribute Netflix traffic (like all other traffic) to its subscribers. Netflix puts its content on CDNs that are conveniently located to make the transit networks' job easier, by making "netflix.com" endpoints closer to large populations of subscribers. Somehow all the other ISPs manage to "route traffic to customer houses" using that arrangement. Why does Comcast have to be different?

irishjohnnie 12y ago
I think maxhou is referring to the segment of the network from Comcast's (or any other ISP's) local data center to its box (I think they're called ATM switches) and eventually your house
- pdonis 12y ago
  Yes; so what? The traffic always has to travel over that segment, regardless of whether the ISP is working with transit networks or not. So whatever the difference supposedly is between Comcast and all the other ISPs, it isn't that. So what is the difference?
  - irishjohnnie 12y ago
    The difference is how Comcast interprets its competitive position compared to its peers. The barriers to entry in the last mile is high regardless of the ISP but it is willing to leverage/extract rents/push the boundaries more compared to others that may be building goodwill/not push the regulatory boundary/sitting and waiting. In other words it is acting like a monopolist or a shrewd business.
    - pdonis 12y ago
      In other words, there is no technical reason why it's any harder for Comcast to "route traffic to the customer's house" using the same arrangement as other ISPs. The reason it doesn't is that it's trying to get paid twice for the same traffic, which is a "business" reason (at least for some value of "business"), not a technical reason.
      - irishjohnnie 12y ago
        Yes, "trying to get paid twice" is what "extract more rent" and "rent seeking" means in other replies including mine.