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Troubleshooting for PPPoE Connection Failure - Part 2 -
Here is "PPPoE Connection Failure - Part 2 -".Let me explain the specific examples I mentioned in Part 1.
3. Incorrect IP Address Configuration
For an incorrect IP address configuration, check whether the configuration is correct by referring to the documents for the ISP contract or the CCO documentation, but not the debug log.
PPPoE connection can be broadly categorized into two types depending on the IP address assignment method.One method is to automatically assign a dynamic IP address each time a connection is established, and the other method is to assign a static IP address in advance.
Please see the examples of connection configuration for each method on CCO.
Static IP assignment
Example configuration of PPPoE connection to a service provider that provides an IP address by LAN-type dispensing method
A debug log for incorrect password configuration is obtained.It may be difficult to notice if the debug log includes an incorrect password as well as other problems.
"Authentication failed" in the debug log indicates that the authentication has failed.After checking the ID / Password that you have configured, correct the incorrect configuration and confirm the operation.
A debug log for an incorrect password configuration
* "Authentication failed" is found after the negotiation of LCP is completed and the authentication is started with CHAP. After that, TERMREQ is received from the peer and TERMACK is returned, and then you can tell that the PPP session is terminated.