2950 - automdix?

Anyone have 2950 switches? I tried to find this setting but doesn't look to be there. I wanted to trunk them with a straight through cable and use auto mdx I think it's called. Is this feature dependant on the IOS or is it actual hardware specific?

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Comments

CodeBlox

I have 2950s and I can tell you, they don't support auto-mdix. You must use a crossover cable on the trunk. I think it's a hardware limitation though (And I may be wrong).

lon21

The above is correct.

control

Thanks a lot both. X over cables it is.

nbeacham

I'm of the opinion that you should be using the required cables anyway. Auto MDIX is a nice feature, but I don't want software to dictate what wires should transmit and what should receive. I think it could open up doors for failure, and from what I have read it can screw up auto negotiation at times. Anywho, the supported auto mdix switches are the 2940, 2970, and 3750 series switches.

control

nbeacham wrote: »

I'm of the opinion that you should be using the required cables anyway. Auto MDIX is a nice feature, but I don't want software to dictate what wires should transmit and what should receive. I think it could open up doors for failure, and from what I have read it can screw up auto negotiation at times. Anywho, the supported auto mdix switches are the 2940, 2970, and 3750 series switches.

I agree with you on using the correct cables. It's just that I didn't have any xovers to hand and I wanted to do a few labs. Have got some on order. I did buy a roll of cable to make my own, but the quality was absolute crap to put it politely. I really struggled to terminate them. My own fault for going down the cheapo route.