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To: Joe Wagner who wrote (1257)	4/20/1999 1:29:00 AM
From: Scott C. Lemon	Respond to of 5853

Hello Joe, > Hi Scott! Can you explain how "Object Routing" works? The basic concept is to move up the ISO model in the way that you structure IP based communications. Currently vendors are trying to break the "Layer 3" and "Layer 4" barriers with their packet-based products. But at Layer 4 and above you move into "connection oriented" communications ... you start to deal with whole objects. By using proxy/cache devices, you are able to move whole objects around the network and cache them closer to users. Instead of shipping fragments of objects, inside of packets, around the Internet through "dumb" packet routers, you ship whole objects between intelligent proxy/caches through large meshes of these proxy/cache devices. Underneath, the proxy-to-proxy communications are still taking place using packets. But the browser, or multimedia client, now talks to the local proxy/cache ... which talks to a "neighborhood" of other caches, eventually one or more of the caches talk to the origin server. There are a whole host of valuable benefits when you move up to this level. And with the large bandwidth backbone vendors sitting on lots of dark-fiber, I believe that it's just a matter of time before they start to dedicate fiber for cache-to-cache communications. Today these vendors dedicate fiber for "packet router-to-packet router" communications ... and an individual packet has limited if any value ... the value is in the whole object. Scott C. Lemon