So, force it to 100BT and half-duplex? I guess I better schedule a time
for this... I don't trust any of their mindless drones at the co-lo
facility to fix anything should the machine not come back up nicely...
---
tani hosokawa
river styx internet
On Sat, 3 Apr 1999, Henrik Olsen wrote:
> On Fri, 2 Apr 1999 [EMAIL PROTECTED] wrote:
> > I've got a client with 3 machines connected to a Cisco 2942 ethernet
> > switch. From what I can tell, he's on 10BT, although his provider claims
> > he's on 100BT. I ran some benchmarks, and found that the maximum rate
> > that I could communicate between machines (all three on the same switch)
> > was 6.5 megabit. From reliable sources, the internal story at his
> > provider is that the Cisco 2942 won't recognize any 3COM cards at 100BT,
> > even though their official story to the customers is that everyone is on
> > 100BT. Also, the card is in half duplex mode. Given that the Cisco 2942
> > is a 10/100 switch, and that it is supposed to be full duplex (according
> > to the specs on Cisco's site), any idea what's going on here? Is the
> > Cisco incompatibility thing true? I find that hard to believe, seeing as
> > they all follow the same IEE standard, and both are pretty widespread
> > components.
> >
> > ---
> > tani hosokawa
> > river styx internet
> Standard answer applies:
> Don't allow autonegotiation.
> Also, since the devices obviously can't negotiate correctly, Flow Control
> packets can't be expected to be negotiated reliably either, which means
> you should use half duplex or you'll lose a lot of throughput in
> congested situations.
>
> Henrik
> --
> Henrik Olsen, Dawn Solutions I/S
> URL=http://www.iaeste.dk/~henrik/
> Get the rest there.
>
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