AC1200 wierd issue when connecting over PPPOE

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AC1200 wierd issue when connecting over PPPOE

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
AC1200 wierd issue when connecting over PPPOE
AC1200 wierd issue when connecting over PPPOE
2020-04-16 07:44:14
Model: Archer C1200  
Hardware Version: V2
Firmware Version: 1.2.1

I have a broadband connection. There is POE before my TP-LINK AC1200 router. Untill yesterday, everything was working fine. Today, if I disconnect the lan cable that goes from POE to router, the POE led light glows, if I plug in the lan cable back, the POE led light doesn't glows. I am unable to connect over PPPOE. I reset the router to factory default and started the wan setup again. On final step, router says something like oops...there was an issue connecting to internet. If I connect lan cable from POE in TP-LINK TL-WR841N router wan port, the POE led light glows stable.

 

If I setup wan connection as dynamic IP and plug a lan cable from lan port of TL-WR841N router in wan port of AC1200 router, it detects the IP address successfully.

 

Any hint what it may be? Any suggestions on troubleshooting the issue?

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