Just out of curiousity - are you referring to the old IBM Type-2 cable spec? If so, you could have a grounding problem that could cause the symptoms you're seeing. If not, then what is the type 2 cabling type that you are referring to?
The IBM "Universal Data Connector" shorts the TX and RX pair when it is not connected to anything.
With the connector in-place, the signal passes through to the UTP/Cat5. When you unplug the UDC, you have a dead short / loopback on both sides of the cable (one from the connector on the cable, one from the connector inthe UDC wallplate).
I'm thinking your switch finds this behaviour offensive.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
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