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Re: Exchanges that matter...

  • From: Jeremy Porter
  • Date: Sun Dec 08 22:18:19 1996

In message <CMM-RU.1.0.850069139.rob@solar.rjl.com>, Rob Liebschutz writes:
>> On Sun, 8 Dec 1996, Joe Rhett wrote:
>> 
>> >  
>> > > It is actually quite hard in practice to push a FDDI switch
>> > > into trouble, although theoretically it should be simple, modulo
>> > > the interesting effects that token-withholding can produce.
>> >  
>> > Hm. Not sure what you mean. FDDI can certainly be over-utilized, that's
>> > not hard. On the other hard, FDDI doesn't fall down and die like
>> > Ethernet does when congested.
>> > 
>> > > In practice, the limiting factor will tend to be the per-port
>> > > bandwidth rather than the aggregate bandwidth.  One would have
>> 
>> At the Atlanta-NAP we offer full duplex FDDI, why not try to get MFS to do
>> it? Cisco now has a full duplex FDDI card, so you can do 200 Mbs into the
>> NAP.
>
>Talk to Steve Feldman from MFS.  At the October Nanog meeting he
>mentioned that their Gigaswitches (not sure if this is was just for
>MAE West) were ready to support Full Duplex FDDI and he invited
>volunteers to try it.
>
>Unfortunately, the GRF does not yet have a full duplex FDDI interface
>available, but when I asked about it, Ascend told me that they had
>implemented a CDDI interface in 3 weeks time to gain the business of
>of one customer.

Of course the rumor has it that CDDI was invented in about
that same length of time, so it can't be too hard to duplicate
that effort.


---
Jeremy Porter, Freeside Communications, Inc.      jerry@fc.net
PO BOX 80315 Austin, Tx 78708  |  1-800-968-8750  |  512-458-9810
http://www.fc.net
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