Lab Objective:
The objective of this lab exercise is for you to configure PAP fallback. This is not covered in earlier labs or in the CCNA syllabus; however, it might come up in the exam!
Lab Purpose:
PAP fallback is a useful feature if your CHAP authentication fails. Rather than watch a video solution, I have provided show runs and test commands where appropriate.
Certification Level:
This lab is suitable for both ICND2 and CCNA certification exam preparation.
Lab Difficulty:
This lab has a difficulty rating of 7/10.
Readiness Assessment:
When you are ready for your certification exam, you should complete this lab in no more than 15 minutes.
Lab Topology:
Please use the following topology to complete this lab exercise:
Task 1:
Configure the topology above. Test by pinging from RouterA to RouterB.
Task 2:
Configure a CHAP with PAP fallback on both routers. Ensure that the encapsulation is set to PPP on both routers.
Task 3:
Check your configurations with show commands (just show run in this case).
Solution
Show Runs RouterA hostname RA ! username RB password 0 cisco archive log config hidekeys ! interface Serial0/0 ip address 10.0.0.1 255.255.255.252 encapsulation ppp clock rate 2000000 ppp authentication chap pap ! RouterB hostname RB ! username RA password 0 cisco archive log config hidekeys ! interface Serial0/0 ip address 10.0.0.2 255.255.255.252 encapsulation ppp clock rate 2000000 ppp authentication chap pap
TEST:
N/A