Ccna routing and Switching Complete Study Guide

905

Mismatched WAN Encapsulations

If you have a point-to-point link but the encapsulations aren’t the same, the link will never 

come up. Figure 21.16 shows one link with PPP and one with HDLC.

f i g u r e   21.16     Mismatched WAN encapsulations

Pod1R1

Pod1R2

hostname Pod1R1

username Pod1R2 password cisco

interface serial 0

ip address 10.0.1.1  255.255.255.0

clock rate 64000

bandwidth 512

encapsulation ppp

hostname Pod1R2

username Pod1R1 password cisco

interface serial 0

ip address 10.0.1.2  255.255.255.0

bandwidth 512

encapsulation hdlc

Look at router Pod1R1 in this output:

Pod1R1#

sh int s0/0

Serial0/0 is up, line protocol is down

  Hardware is PowerQUICC Serial

  Internet address is 10.0.1.1/24

  MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,

     reliability 254/255, txload 1/255, rxload 1/255