On 17/05/2008, at 3:52 AM, Kai Chen wrote: > Sure, two ASs may peer with each other at multiple locations, I do > want to > know in each of these peering location, if there exist multi-access > between > these two ASes.
If you're looking for some rules about how this must work, you won't find them - all these things are optional and dynamic. Multiple accesses between two ASes at a single physical location is possible, yes. It's probably a good idea in most cases - whether it happens or not is usually a matter of whether the cost (both capital and opex) is worth it, I imagine. RE. your original question (2) - yes a single router in each AS and a link between them is the simplest. Add more routers and more links as required to meet capacity and resiliency requirements, where cost permits. -- Nathan Ward _______________________________________________ NANOG mailing list NANOG@nanog.org http://mailman.nanog.org/mailman/listinfo/nanog
