eepro100 performance problems
Thu Jun 17 15:36:40 1999
> He's suggested it might be a defective board, saying:
> >The reason I am
> >saying this is because after setting the board to 100 FD, it was not abl
> >to autonegotiate with the switch, which was set to autonegotiate. After
> >switched the switch to 100 FD, it was able to make a connection. Usually
> >when autonegotiation fails, it doesn't fail completely, it just keeps
> >trying, the result being about 3mbs thruput.ie toggling on and off to 10
I've never had any luck getting things to autonegotiate when one
of the parties is "forced". In my case, the switch was "set" to
100MHz/FD, but my eepro100's all went to 100MHz/HD, which really
screws things up performance wise.
I don't think autonegotiation works properly when one of the parties
has been "forced".
Either set both to autonegotiate, or set both to 100MHz/FD: the
latter is the most reliable method.
The telltale for malfunction in our case was the contents of
we had a lot of "carrier", which seemed to happen when the switch was 100MHz/FD
and the board was left to autonegotiate.