[c-nsp] Cisco WS-X6748-GE-TX / Extreme interoperability problems?

[Dave Temkin]

Sounds like auto-negotiate and auto-mdix are tied together.

Is the cable a X-over?  If not, then setting the Cisco to 100/full will
turn off auto-mdix and the port will go down.



On Fri, 5 Aug 2005, Stevens, Brant I. wrote:

> Just the queuing on the backplane of the Catalyst, if you read the last
> Tolly Group report... ;)
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Simon Lockhart
> Sent: Friday, August 05, 2005 2:55 PM
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] Cisco WS-X6748-GE-TX / Extreme interoperability
> problems?
>
> Hi,
>
> Is anyone aware of any interoperability problems between a Cisco
> WS-X6748-GE-TX and an Extreme BlackDiamond 6808?
>
> The Extreme has the port hard coded to 100M/Full.
>
> If the Cisco is left to auto negotiate, it ends up as 100/Half, as I
> would expect. If I set the Cisco the 100/Full, the port goes down, and
> won't come up.
>
> If the Extreme is set to auto, the port comes up fine.
>
> We've tried plugging a different device in instead of the Extreme, and
> the port comes straight up as 100/Full.
>
> I've tried fiddling with clock and flowcontrol settings, and these make
> no difference.
>
> Any ideas? The Service Provider (the extreme end) has a policy of not
> leaving ports to autonegotiate, so I really need to sort this out...
>
> Thanks,
>
> Simon
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