Background/ Scenario
The routers at your company were configured by an inexperienced network engineer. Several errors in the configuration have resulted in connectivity issues. Your boss has asked you to troubleshoot and correct the configuration errors and document your work. Using your knowledge of PPP and standard testing methods, find and correct the errors. Make sure that all of the serial links use PPP CHAP authentication, and that all of the networks are reachable. The passwords are “cisco” and “class”.
Packet Tracer - Troubleshooting PPP with Authentication Instructions
Packet Tracer - Troubleshooting PPP with Authentication - PKA