nanog mailing list archives
Re: NAP/ISP Saturation WAS: Re: Exchanges that matter...
From: David Schwartz <davids () wiznet net>
Date: Tue, 17 Dec 1996 14:24:16 -0500 (EST)
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 davids () wiznet net. 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
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Current thread:
- Re: Exchanges that matter..., (continued)
- Re: Exchanges that matter... Nathan Stratton (Dec 08)
- Re: Exchanges that matter... Jeremy Porter (Dec 08)
- Re: Exchanges that matter... Alec H. Peterson (Dec 08)
- NAP/ISP Saturation WAS: Re: Exchanges that matter... Forrest W. Christian (Dec 15)
- Re: NAP/ISP Saturation WAS: Re: Exchanges that matter... Mike Leber (Dec 16)
- Re: NAP/ISP Saturation WAS: Re: Exchanges that matter... dave o'leary (Dec 16)
- Re: NAP/ISP Saturation WAS: Re: Exchanges that matter... Dima Volodin (Dec 16)
- Re: NAP/ISP Saturation WAS: Re: Exchanges that matter... Craig Nordin (Dec 16)
- Re: NAP/ISP Saturation WAS: Re: Exchanges that matter... Tony Li (Dec 17)
- Re: NAP/ISP Saturation WAS: Re: Exchanges that matter... Dennis Ferguson (Dec 17)
- Re: NAP/ISP Saturation WAS: Re: Exchanges that matter... David Schwartz (Dec 17)
- Re: NAP/ISP Saturation WAS: Re: Exchanges that matter... Hank Nussbacher (Dec 17)
- Re: Exchanges that matter... Alex.Bligh (Dec 05)
- RE: Exchanges that matter... Deepak Jain (Dec 05)
- Building exchanges that matter .. Joe Rhett (Dec 07)
- Re: Exchanges that matter... Wayne Bouchard (Dec 05)