[rescue] u2 drive trays

Dave McGuire mcguire at neurotica.com
Tue Aug 19 12:45:22 CDT 2003

On Tuesday, August 19, 2003, at 01:36 PM, Curtis H. Wilbar Jr. wrote:
>>> OK.... but how is this different from FDDI.... if I have two FDDI
>>> clients trying to throttle one FDDI server... that is still only
>>> 100Mbit of bandwidth at the server, and aggregated 200Mbit of 
>>> clients...
>>> So how does it differ ?
>> The clients don't have to fight for fair time at the fabric level.  
>> This
>> is built into the FDDI protocol and is a large portion of why Ethernet
>> doesn't reach a full 100Mbit in most real-world situations.
> So 100Mbit of transfer is what a client can see... which means raw
> theoretical transfer on the fiber is higher.... ?????  vs ethernet
> 100baseTX, where 100Mbit is the physical throughput of the medium ??

   Yes.  FDDI's raw rate is 125Mbps, if memory serves.

> I can definately see a boost with that.... wonder if any of my 
> switches,
> NICs, OSes can support larger frames for ethernet ???

   It'd be a very nonstandard, likely incompatibly-implemented kludge.  
Gigabit Ethernet supports larger frames ("Jumbo" frames) but it isn't 
widely implemented.


Dave McGuire                 "You don't have Vaseline in Canada?"
St. Petersburg, FL                     -Bill Bradford

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