what is ppp protocol in cisco router

hello guys

Today i will tell you what is ppp?

A ppp is point to point protocol it is use in data link layer .

a ppp protocols have two type of authentication

1 pap
2 chap


PAP-password authentication protocol it is use for giving a password as a text it is not secure any


CHAP-Challenge handshake authentication protocol it is encrypted format and it is secure
         

How to use pap authentication protocol in ppp with example

EXAMPLE : PAP

//R1 Configuration

Router(config)#hostname r1

r1(config)#int fa0/0

r1(config-if)#ip add 192.168.1.1 255.255.255.128

r1(config-if)#no shut

r1(config-if)#exit

r1(config)#int s0/0

r1(config-if)#ip add 192.168.2.1 255.255.255.252 

r1(config-if)#no shut

r1(config-if)#clock rate 64000

r1(config)#ip route 192.168.1.128 255.255.255.128 192.168.2.2

//R2 Configuration

Router(config)#hostname r2

r2(config)#int fa0/0

r2(config-if)#ip add 192.168.1.129 255.255.255.128

r2(config-if)#no shut

r2(config)#int s0/0

r2(config-if)#ip add 192.168.2.2  255.255.255.252

r2(config-if)#no shut

r2(config)#ip route 192.168.1.0 255.255.255.128 192.168.2.1

//Setting a pap authentication r1 router 

r1(config)#username r2 password cisco
r1(config)#int s0/0
r1(config-if)#encapsulation ppp
r1(config-if)#ppp authentication pap
r1(config-if)#ppp pap sent-username r1 password cisco

//Setting a pap authentication in r2 router 

r2(config)#username r1 password cisco
r2(config)#int s0/0
r2(config-if)#encapsulation ppp
r2(config-if)#ppp authentication pap
r2(config-if)#ppp pap sent-username r2 password cisco

Thanks


i hope friends it is useful for you