[rescue] u2 drive trays

[Dave McGuire]

On Tuesday, August 19, 2003, at 01:10 PM, Mike Meredith wrote:
>> Yes that is correct, in switched ethernet you still get plenty of
>> collisions (ergo contention) between nodes, since even though
>
> Er ... no. I've never seen a 100Mbps ethernet switch that doesn't do
> full duplex; whilst they probably exist they are pretty rare. And most
> 100Mbps interface cards are full duplex. If you see collisions on an
> system interface, you've almost certainly got a negotiation problem.
>
> Yes I'm nit-picking, but it's worth pointing out in case someone has a
> negotiation problem and ignores it because "with Ethernet you get
> collisions".

   Not "collisions" from Ethernet's point of view ("there was noise on 
the line so I've got to retransmit sometime in the future"), but 
*contention*.  A logicl collision that makes the switch store the 
packet for a period of time and send it when the destination port is 
clear.

       -Dave

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