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Error establishing PPPoE connection

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Error establishing PPPoE connection

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Re:Error establishing PPPoE connection
2025-07-23 01:51:31 - last edited 2025-07-23 03:14:03

  @Saba1990 

Saba1990 wrote

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 23 c0 23 01 53 00 21 15 73 62 61 73 73
0020   2d 6b 61 6e 61 67 61 73 61 62 61 70 61 74 68 79
0030   06 31 32 33 34 35 36 00 f1 49 6f 94
 

I can see a null byte after the password.  Will that be a problem for the authentication failure?

 

Because of that, the ISP returns 'Login Incorrect' response as below.

0000   dc 62 79 4c ff 09 78 9a 18 be 56 bf 88 64 11 00
0010   df 53 00 16 c0 23 03 00 00 14 0f 4c 6f 67 69 6e
0020   20 69 6e 63 6f 72 72 65 63 74 00 00 00 00 00 00
0030   00 00 00 00 00 00 00 00 00 00 00 00
 

 

Thank you,

Saba

This does not make sense to me. If you paste the information, use the left-side human-readable part.  

So, Wireshark, the human-readable part, what does it tell? 

 

And what does your ISP say about this problem? 

I am inclined to believe this is a problem with the ISP as there are no reports in the past or about this firmware version. I have not seen a similar case for a long time. 

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Re:Error establishing PPPoE connection
2025-07-23 04:18:17

  @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

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#13
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Re:Error establishing PPPoE connection
2025-07-23 06:16:42 - last edited 2025-07-23 08:11:29

  @Saba1990 

Saba1990 wrote

  @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

Compared to the MR400, what's the difference? Do you have a screenshot from MR400 for this interaction? 

 

Original file of the Wireshark for ER605 and MR400. You can upload to OneDrive and paste a link for me to download.

And you can send a backup to the forum support email.

Since the beginning of 2025, we no longer create the email tickets for the user. To assist and figure it out efficiently, we recommend submitting a support ticket via email.

Please include:

1. Your Forum ID;

2. Your community nickname;

3. A detailed description of the issue and result if I have suggested anything on the thread, and the troubleshooting steps you've taken in the subject line or body of your email.

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#14
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