link up/down cause

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can be something else with ether goes up and down ?
I assume its connected to switch which is powered on constantly.
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Check the UTP cable …

i am aware of that, just posting cause is it possible to have this type of problem and be something else

It could be something else, but linking at 10M half duplex is highly suspicious of a bad cable.

Yes it can be something else.. But what’s your point ?
You want a list of all possible reasons before start checking ?