I executed "tdr cable-diag interface gi1/0/2" on my 3850 switch.
Output is as mentioned below. Access point is connected to that port and it's negotiating 100M with switchport.
Other AP negotiating 1g with switch. Does this output mean pair D is faulty ?
Interface Speed Local pair Pair length Remote pair Pair status
--------- ----- ---------- ------------------ ----------- --------------------
Gi1/0/2 100M Pair A 0 +/- 1 meters N/A Normal
Pair B 0 +/- 1 meters N/A Normal
Pair C 0 +/- 1 meters N/A Normal
Pair D 39 +/- 1 meters N/A Open