Ethernet question
Tom Buskey
tom at buskey.name
Tue Aug 27 11:22:37 EDT 2002
pll at lanminds.com said:
>
>Hi all,
>
>In mucking around with the mii-tools from Donald Becker, I noticed in
>the man page that you can set a fixed speed for your card. The
>choices given are:
>
> 100baseT4
> 100baseTx
> 100baseTx-FD
> 100baseTx-HD
> 10baseT
> 10baseT-FD
> 10baseT-HD
>
>What is 100baseT4? And why would you set a speed of 100baseTx-HD.
HP had a fast ethernet standard that didn't catch on. It used 4 pairs
over cat-3 (or higher). I think it also had some QOS stuff in it.
Everyone else got on the other standard. Probably because of licensing
fees. From what I understand, the T4 standard had some technical
advantages. Running on Cat-3 could've saved the end users some $$$ too.
It's nice to be able to set the duplex/speed. Some hubs/cards don't do
autonegotiation very well. UB Networks' cards for the chassis based
stuff was awful. Yes, I worked there & managed the network. Yes we
used our own stuff. It was engineering prototypes & returned refurbs in
our network. Fun to support.
--
-------
Tom Buskey
More information about the gnhlug-discuss
mailing list