Tony Li allegedly wrote on 07/25/2009 6:23 PM: > Well, to me, central to the notion of the Internet architecture and more > specifically to a routing architecture is the notion of topology. It > would seem somewhat challenging to be able to describe topology without > being able to describe a graph. And if we want to be able to describe a > graph, we need to be able to articulate the nodes and edges in that > graph. I don't see how to do this with just service identifiers. > > Regards, > Tony
An excellent thought-provoking post, although in the end I somewhat disagree. From the point of view of the network, the nodes in the graph are attachment points, not hosts. Attachment points are where the network stops. We do have names for those points without invoking node identifiers -- according to <http://trac.tools.ietf.org/group/irtf/trac/wiki/RRGTerminology> they are called locators. Of course forwarding functions will use whatever they want as input, including things that some people call "identifiers", but that extra information is not necessary to describe topology. See you ... Scott _______________________________________________ rrg mailing list [email protected] http://www.irtf.org/mailman/listinfo/rrg
