Ccna routing and Switching Complete Study Guide

Verifying and Troubleshooting Serial Links

Now that PPP encapsulation is enabled, you need to verify that it’s up and running. First, 

let’s take a look at a figure of a sample nonproduction network serial link. Figure 21.14 

shows two routers connected with a point-to-point serial connection, with the DCE side on 

the Pod1R1 router.

f i g u r e   21.14     PPP authentication example

Pod1R1

Pod1R2

hostname Pod1R1

username Pod1R2 password cisco

interface serial 0

ip address 10.0.1.1  255.255.255.0

encapsulation ppp

clock rate 64000

bandwidth 512

ppp authentication chap

hostname Pod1R2

username Pod1R1 password cisco

interface serial 0

ip address 10.0.1.2  255.255.255.0

encapsulation ppp

bandwidth 512

ppp authentication chap

---

Point-to-Point Protocol (PPP) 

903

You can start verifying the configuration with the 

show interface

 command like this:

Pod1R1#