Re: [cobalt-users] duplex question

[flash22@xxxxxxx]

On Thu, 26 Jul 2001 cobalt@xxxxxxxxxxxxxxxx wrote:

> Hello All,
> I believe the cobalt raq's are supposed to auto negotiate duplex.
> I have some raqs connected into a cisco catalyst 5500. If I have the
> network guys set the switch to full duplex (on the raq port), I see
> collisions on my eth0 and transfer at 70kB/sec from a solaris machine on
> the network. When I set the switch to half duplex for the cobalt raq port,
> the collisions continue (much faster) but I start getting 700kB/sec from
> the solaris machine (using secure copy to do these transfers, BTW)
> 
> So my question is why do I see collisions either way I set the switch
> and if raqs do auto negotiate, why is full duplex so much slower?

You rebooted the raq right? negotiation , when it works, only happens once
at boot....(or the first packet that makes it into the interface
thereafter)

I'd be thinking cable otherwise, the fact you have slower speed in full
duplex on the cisco side tells me you really are having collisions, tho
the fact you seem to have them in full/half mode makes me wonder about the
cable more....

ps: dunno about the raq's per se, but many linux drivers can also be
forced into full or half mode via kernel options...

gsh