POINT TO POINT AUTHENTICATION PROTOCOL

AIM : To perform Point to Point Authentication (PAP and CHAP) Protocol functions between the Routers and Computers in the network.

PROCEDURE

1)    Create a topology using 2 Routers for PAP Protocol

2)    Create a topology using 2 Routers for CHAP Protocol

3)    Configure IP address to routers go to global configuration mode in R0 and R1configure connected interfaces

4)    Assign IP address for interfaces

5)    Configure both routers with PAP / CHAP Protocol

6)    Use the Ping Command to verify the connectivity

 

PAP PROTOCOL – TOPOLOGY CONFIGURATION

ROUTER 0

Router> enable

Router# configure terminal

Router(config)# username trichy password 123

Router(config)# exit

Router# show ip interface brief

Router# configure terminal

Router(config)# interface fastethernet 0/0

Router(config-if)# ip address 10.0.0.1 255.0.0.0

Router(config-if)# no shutdown

Router(config-if)# exit

Router(config)# interface serial 0/1/0

Router(config-if)# encapsulation ppp

Router(config-if)# ip address 20.0.0.1 255.0.0.0

Router(config-if)# no shutdown

Router(config-if)# router eigrp 100

Router(config-router)# network 10.0.0.0

Router(config-router)# network 20.0.0.0

Router(config-router)# exit

Router(config)# interface serial 0/1/0

Router(config-if)# ppp pap sent-username chennai password abc

Router(config-if)# ppp authentication pap

Router(config-if)# exit

Router(config)# exit

ROUTER 1

Router> enable

Router# configure terminal

Router(config)# username chennai password abc

Router(config)# interface serial 0/1/0

Router(config-if)# ip address 30.0.0.1 255.0.0.0

Router(config-if)# no shutdown

Router(config)# interface serial 0/1/0

Router(config-if)# encapsulation ppp

Router(config-if)# ip address 20.0.0.2 255.0.0.0

Router(config-if)# no shutdown

Router(config-if)# router eigrp 100

Router(config-router)# network 20.0.0.0

Router(config-router)# network 30.0.0.0

Router(config-router)# exit

Router(config)# interface serial 0/1/0

Router(config-if)# ppp pap sent-username trichy password 123

Router(config-if)# ppp authentication pap

Router(config-if)# exit

Router(config)# exit

Router 0

Router# debug ppp authentication

PPP authentication debugging is on

Router# configure terminal

Router(config)# interface serial 0/1/0

Router(config-if)# sh

Router(config-if)# no shutdown

Router(config-if)# exit

Router(config)# exit

Router#

ROUTER 1

Router# debug ppp authentication

PPP authentication debugging is on

Router# configure terminal

Router(config)# interface serial 0/1/0

Router(config-if)# sh

Router(config-if)# no shutdown

Router(config-if)# exit

CHAP PROTOCOL – TOPOLOGY CONFIGURATION

 

ROUTER 0

enable

configure Terminal

interface fastethernet 0/0

ip address 10.0.0.1 255.0.0.0

no shutdown

interface serial 0/1/0

encapsulation ppp

ip address 20.0.0.1 255.0.0.0

no shutdown

router rip

network 10.0.0.0

network 20.0.0.0

ROUTER 1

enable

configure Terminal

interface fastethernet 0/0

ip address 30.0.0.1 255.0.0.0

no shutdown

interface serial 0/1/0

encapsulation ppp

ip address 20.0.0.2 255.0.0.0

no shutdown

router rip

network 20.0.0.0

network 30.0.0.0

ROUTER 0

configure terminal

username rb password 123

interface serial 0/1/0

ppp authentication chap

ROUTER 1

configure terminal

username ra password 123

interface serial 0/1/0

ppp authentication chap

ROUTER 0 and 1

debug ppp authentication

ROUTER 0 and 1

interface serial 0/1/0

shutdown

no shutdown