Lan port 3 & 4 not working

[minhgi]

I noticed that my LAN port 3 and 4 no longer work when plugin a network wire into AC5300. It have been on RMerlin since 380.57 and now on 380.61. Usually the other end of the wire is connected to my PC and get a led indicator to see if it is on. Using the same wire, LAN port 1 & 2 get the lights, but port 3 & 4 do not. In the Tool tab, status report on 3 and 4 link as down / on VLAN 1. Anyone had have this issue before and how was it gotten resolved.

Also I am not using IPTV setup. Hopefully those ports are not hardware dead.

 

[sfx2000]

Try moving cables around first, and then swap out old cables for something new...

cables generally fail first before ports do - in most cases.

 

[TonyH]

Try moving cables around first, and then swap out old cables for something new...

cables generally fail first before ports do - in most cases.

 

[TonyH]

Try moving cables around first, and then swap out old cables for something new...

cables generally fail first before ports do - in most cases.

Or it could be a legit h/w fault. in binary count port 1=oo, port 2=01, port 3=10, prot 4=11, in another word binary number 0, 1, 2, 3. Most significant bit is not setting = unable to address port 3 and 4. Seen it happen.