On Jun 8, 2010, at 10:22 AM, Ryan Malayter wrote: > Or it could just be "the Internet". Asymmetric routes are the norm > when crossing ISP boundaries, not the exception. Everyone does "hot > potato" routing, and dumps packets onto their peer and upstream > networks at the nearest exit point from their own network. > > For example, when a packet travels from my hosting provider in Dallas, > it jumps from the hosting provider to Level 3 to XO in the Dallas > metro area, and then XO transports it to Chicago over their network. > But a packet travelling from my Chicago office starts on XO, and is > dumped to Level 3's chicago peering point, and then travels to Dallas > via Level 3's network.
"hot potato" is a nice term, although RFC-2328 uses a fancier phrase, "Open Shortest Path First". :-) Although, in point of fact, OSPF is mostly used internally on large networks (within a single AS), and BGP is used for communication between different internetworks. Regards, -- -Chuck _______________________________________________ pool mailing list [email protected] http://lists.ntp.org/listinfo/pool
