To: Scott Zion who wrote (5646 ) 10/22/1999 8:00:00 PM From: Frank A. Coluccio Read Replies (1) | Respond to of 12823
Thanks, Scott... all around. Interesting roadmap. Certainly not designed for my laptop. I'll have to put it to an X-Y plotter and plot an e-size drawing, in color. The drawing does highlight an irony, however, which I have highlighted here and elsewhere in the past. And this has to do with the Terabit routers. The legend says that Terabits are situated at the edge and go across the core to other terabit edge routers. Fine. But if they are shunted directly to other edge routers, then there is no core to speak of, in the traditional sense. The core in this case is merely an optical shunt supporting peering edge routers, IMO. This could take place in a data center, or across a continent, or between continents. The term core connotes a higher order of concentration power, in a hierarchical sense, being the ultimate level of muxing or routing in a given network design. A shunt, in contrast, offers no routing or muxing at all. Perhaps coreless is a better term? Across the coreless? Fun with words. Just like the notion of a terabit router, to begin with. Nonsense. Multiple dwdm'ed streams packaged in SONET containers, independent from one another, are being directed from one edge to another in a pile, for the most part. There is no such thing as a true single stream terabit router, yet. Even Junipers are having issues with routing and forwarding OC-48s (2.5 Gb/s) in the true routed form. Layer 3 routing and forwarding is a lot more processor intense than merely packaging multiple OC48s and OC192s at the physical layer ports, which is what some of the others are saying make up their Terabit routed streams. Which is, IMO, hooey. More word fun to fuel the marketecture of startups, in order to wow the masses on IPO day. Regards, Frank Coluccio