Port/cable problems on cisco 2950?

Question

network hardware

In one room there is a tsiska 2950, ​​in it one of the gigabit ports refuses to work above 100mb. If you move the wire a little and lift the tsiska, then everything works, the twisted pair was re-compressed, the problem is the same.

Answer 1

Three options:
1) The core has cracked / the insulation has frayed and it is bad. Pretty likely, especially if the cable is cheap, with thin strands of snot-and-cardboard alloy.
2) The soldering / board cracked in the cisco, which is very unlikely, because the connector block is fastened there in good conscience
3) Oblique hands (or a crimper) at the crimper. For example, he does not push the outer insulation under the special shoulder on the connector, and as a result it turns out that everything is hanging out. Or the crimper is not making good contact.
To understand which option is yours, wave the port. If the problem moves along with the cable, the cable is to blame. Otherwise, the port is to blame.
If the cable is to blame - wave the crimper (and post a photo of what you crimped).
A bad core can be searched for by tests from the cisco itself or a multimeter in dialing mode.