Datasheet

Lab – Troubleshooting Basic PPP with Authentication
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Router R3 Configuration:
hostname R3
enable secret class
no ip domain lookup
banner motd #Unauthorized Access is Prohibited!#
username R2 password chap123
username R3 password chap123
!no username R3 password chap123
!username R1 password chap123
interface g0/1
ip address 192.168.3.1 255.255.255.0
no shutdown
interface s0/0/0
ip address 192.168.13.2 255.255.255.252
clock rate 128000
encapsulation ppp
ppp authentication chap
no shutdown
interface s0/0/1
ip address 192.168.23.2 255.255.255.252
encapsulation ppp
ppp authentication chap
no shutdown
exit
router ospf 1
router-id 3.3.3.3
! network 192.168.3.0 0.0.0.255 area 0
network 192.168.13.0 0.0.0.3 area 0
network 192.168.23.0 0.0.0.3 area 0
passive-interface g0/1
line con 0
password cisco
logging synchronous
login
line vty 0 4
password cisco
login
Step 4: Save your running configuration.
Part 2: Troubleshoot the Data Link Layer
In Part 2, you will use show commands to troubleshoot data link layer issues. Be sure to verify settings, such
as clock rate, encapsulation, CHAP, and usernames/passwords.