@Clive_A , Thanks for your response. Below is the screenshot of wireshark capture. Below is the response from the ISP. Please let me know for more information. Thank you, Saba

Hi @Clive_A , After tracing the packets with Wireshark, ER605 router is sending the below packets to the ISP for the authentication. 0000 78 9a 18 be 56 bf dc 62 79 4c ff 09 88 64 11 00 0010 df 53 00...

@Clive_A , Thank you for your response. My ISP is SBASS - a regional internet provider. They allow us to use our own routers to connect to them. In-fact the Archer MR400 is my own router to connect...

@Clive_A As you mentioned, I have reset to default settings and added only username and password. But getting the same error. 2025-05-01 10:56:12 PPPoE Client NOTICE WAN1: PPPoE began connecting...

@Clive_A Hi, My ISP runs a fiber optics cable and have given GPON converter. I have connected the MR400's WAN RJ45 port to the GOPN converter's LAN RJ45 port and used the PPPoE connection to connect...

@Clive_A, thank you for your quick response. I can connect to the ISP from my Archer MR400 router with the same username and password. MR400 router user PAP for the authentication. Is there any way...