Hi,
A couple of things that I always look at.
1, Do you have a link at both ends.
Yes then the port speeds and cable are fine e
else
Check the cable and port speed.
2. Is the switch port set to and running Half Duplex.
No set the port to half duplex. Autonegotiate will almost certainly fail to the old
Synoptics hub and therre is every chance that you are failing here. Yoiu can usally
pick this up very easily by checking the switch port. If a duplex setting is bad you
will have heaps of late collisions and runts. This can be enough to cause your
network to fail.
Hope this is ok.
Teunis,
Hobart, Tasmania
Australia
On Friday, December 01, 2000 at 07:30:36 AM, Bradley J. Wilson wrote:
> Okay gang, I had an interesting and annoying situation yesterday morning,
> and I'd like to see if anyone else has had an experience like this:
>
> My client was installing an older BayStack 301 switch into their existing
> network, which consisted of a Bay Access Node router, as well as four
> stacked SynOptics LattisHubs. The router was experiencing excessive
> collisions, hence the installation of the switch. So we installed the
> switch and cabled the router to it, moved all the "power users" directly
> onto the switch, and left the other users attached to the hub. We attached
> the hub to the switch via a straight-through cable.
>
> The users who were directly connected to the switch had no problem accessing
> the network and Internet. The users on the hub were dead in the water. We
> tried swapping out the cable between the hub and switch, tried plugging
> either end into different ports, tried flipping the MDI/MDI-X switch, and
> nothing worked. The only thing that *did* work was using a *crossover*
> cable between the hub and the switch.
>
> Now, the rule (which I gleaned from this newsgroup, btw) is that when you're
> connecting devices at different OSI layers, you use a straight-through -
> e.g. PC to hub, PC to switch, switch to router, hub to switch - that's all
> straight-through. You use a crossover when you're connecting devices at the
> same OSI layer - router to router, switch to switch, hub to hub, PC to PC.
> In the situation yesterday, a straight-through seemed logical, as we were
> trying to connect a hub to a switch. Am I wrong here? Why did the
> crossover work?
>
> Thanks,
>
> BJ
>
> P.S. sorry for the Bay-centric example...I'm trying to get them to change
> that. ;-)
>
>
>
>
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