|
North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: sell shell accounts?
> If you have full use of the fiber across which you move your packets you > can create a mesh of PVCs directly connecting each router thus decreasing > the hop count. The same can be done when using an existing cell-relay cloud, > but you pay on a per pvc basis so the benefit needs to be weighed against the > cost. Of course the packets still flow along the same physical path and in a > wide area network the time in transit will be more significant than the time > to get through the routers. > > Jim Nope, remember - there is no magic. Any mesh of PVCs that one makes over a switched network must reflect the toplogy of that network, and one can set up a matching set of active routing sessions and route weights which will cause traffic to flow the same way. Yes, the switches are a bit faster and have less to do. Data moves through them in a few ms less per point. But as you said (and as I said in our discussion in NYC), relative to any distance, the speed of light guarantees that you won't notice the difference. The question is: Will there be routers available that can make IP routing decisions based on 40-60kroutes and move 2-3 OC3s worth of bidirectional traffic? The building of the configs to have a routed network work the same as a switched ATM one can be automated, but it's true that it *can be* easier to see what's going on in a large-scale switched network. Avi - - - - - - - - - - - - - - - - -
|