On Wed, Mar 5, 2014 at 1:20 PM, Joel M. Halpern <[email protected]> wrote: > 1) The set of traffic allowed is more nuanced and varied than just the two > categories of transit and peer.
Howdy, Following up on a private suggestion from Joel, I polled network operators and identified either a modification to the definition of transit or a third kind of interaction between ASes depending on how you want to look at it. For now I'll treat it as a third kind call these REN links after the Research and Education Networks where they most commonly appear. REN links happen when several networks share a tightly bound market niche, such as schools in a particular region. Networks serving this niche agree to peer to take data off of their paid transit connections. Then they take the extra and mutual step of permitting each neighbor who serves the niche to transit their internal backbones to each other neighbor serving the same niche. This creates a sort of shadow network improving the customers' access to each other. This seems to serve as an entry fee to gain access to the market niche -- customers are disinclined to choose a service provider who does not participate. It may also be a mechanism for protecting these typically smaller service providers from competition by large multinational networks who would find it challenging to participate due to the size and complexity of their networks. A number of other examples were put forward but in my opinion they were straightforward variants of the transit service I've already defined. For example, one individual claimed HE's IPv6 tunnels were a valley because they're free and not limited to peering. However, HE's tunnel service is clearly simple transit under the definition in my earlier post. With that, can anyone offer an additional concrete example of a relationship between two neighboring ASes besides transit, peering and REN links? Or have we pretty much captured it? Regards, Bill Herrin -- William D. Herrin ................ [email protected] [email protected] 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004 _______________________________________________ rrg mailing list [email protected] http://www.irtf.org/mailman/listinfo/rrg
