nanog mailing list archives

Re: Exchanges that matter...


From: Rob Liebschutz <rob () rjl com>
Date: Sun, 8 Dec 96 10:18:59 PST

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.

Rob

- - - - - - - - - - - - - - - - -


Current thread: