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Re: NAP/ISP Saturation WAS: Re: Exchanges that matter...
I'm quite curious how they handle full-duplex FDDI where witholding the token doesn't seem to be an option. Do they simply drop packets when traffic gets bursty? Ironically, I'd prefer they drop the packet bound for a busy port rather than stop all incoming traffic from a port until the busy port frees. If anyone has experience with NetStar's GigaRouters, especially in comparison to the GigaSwitches, I'd love to hear about it. You can reach me at [email protected] DS On Tue, 17 Dec 1996, Dennis Ferguson wrote: > > My (admittedly second hand) understanding is that the Gigaswitch/FDDI > > actually has minimal amounts of buffering. During a congestion event, it > > simply withholds the token, resulting in buffering in the routers. Queues > > there eventually overflow, and ... > > This matches my understanding, though I think it understates the problem. > Gigaswitches are essentially input-queued. When their teeny tiny buffers > fill they flow-control everyone to slow them down. What this means is that - - - - - - - - - - - - - - - - -