Wednesday, February 4, 2015

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InTroDucTion and ConFiuGuraTion of PPP Protocol




  1. Authentication Protocols in PPP


Router 1 Interfaces configuration}
Ø  R1(config)#interface serial 1/0
Ø  R1(config-if)#description CONNECTED TO ROUTER2
Ø  R1(config-if)#ip address 10.250.250.1 255.255.255.252
Ø  R1(config-if)#clock rate 64000
Ø  R1(config-if)#no shut
Ø  R1(config-if)#exit

Ø  R1(config)#interface serial 1/1
Ø  R1(config-if)#description CONNECTED TO ROUTER2
Ø  R1(config-if)#ip address 192.168.2.1 255.255.255.252
Ø  R1(config-if)#clock rate 64000
Ø  R1(config-if)#no shut
Ø  R1(config-if)#exit

{Router 2 Interfaces configuration}
Ø  R2(config)#interface serial 1/0
Ø  R2(config-if)#description CONNECTED TO ROUTER1
Ø  R2(config-if)#ip address 10.250.250.2 255.255.255.252
Ø  R2(config-if)#no shut
Ø  R2(config-if)#exit

Ø  R2(config)#interface serial 1/1
Ø  R2(config-if)#description CONNECTED TO ROUTER1
Ø  R2(config-if)#ip address 192.168.2.2 255.255.255.252
Ø  R2(config-if)#no shut
Ø  R2(config-if)#exit

{Router1 PPP Configuration}
Ø  R1(config-if)#interface serial 1/0
Ø  R1(config-if)#encapsulation ppp         {Dedicated port for PPP}
Ø  R1(config-if)#ppp authentication chap       {Authentication CHAP}
Ø  R1(config-if)#exit

Ø  R1(config)#interface serial 1/1
Ø  R1(config-if)#encapsulation ppp            {Dedicated port for PPP}
Ø  R1(config-if)#ppp authentication chap         {Authentication CHAP}
Ø  R1(config-if)#exit

Ø  R1(config)#username R2 password cisco        {Train the Router1 To Authenticate Router2 using Router2 Username and Password}

{Router2 PPP Configuration}
Ø  R2(config-if)#interface serial 1/0
Ø  R2(config-if)#encapsulation ppp
Ø  R2(config-if)#ppp authentication chap
Ø  R2(config-if)#exit

Ø  R2(config)#interface serial 1/1
Ø  R2(config-if)#encapsulation ppp
Ø  R2(config-if)#ppp authentication chap
Ø  R2(config-if)#exit

Ø  R2(config)#username R1 password cisco          {Username:- Router1 and Password cisco {password same in all Routers} 
            {PPP Configuration is done}
Show & Troubleshooting Commands
Ø  Router# show interface serial 1/0
Ø  Router# debug ppp {option}
{Now Ping Router1 and Router2}

  1. Multilink Configurations:- it Bundles multiple links in a single link and also Load Balancing between Links


{Router 1 Interface configuration}
Ø  R1(config)#interface serial 1/0
Ø  R1(config-if)#description CONNECTED TO ROUTER2
Ø  R1(config-if)#no ip address
Ø  R1(config-if)#ppp multilink group 1      {enable Multilink and 1 is group no :- any no. But same in all routers}
Ø  R1(config-if)#exit

Ø  R1(config)#interface serial 1/1
Ø  R1(config-if)#description CONNECTED TO ROUTER2
Ø  R1(config-if)#no ip address
Ø  R1(config-if)#ppp multilink group 1
Ø  R1(config-if)#exit

{Multilink interface Configuration}
Ø  R1(config)#interface multilink 1         {1 :- Group no.}
Ø  R1(config-if)#ip address 192.168.2.1 255.255.255.252
Ø  R1(config-if)#ppp multilink       {enable PPP}
Ø  R1(config-if)#exit

{Router2 interface configuration}
Ø  R2(config)#interface serial 1/0
Ø  R2(config-if)#no ip address
Ø  R2(config-if)#ppp multilink group 1      {enable Multilink and 1 is group no :- any no. But same in all routers}
Ø  R2(config-if)#exit

Ø  R2(config)#interface serial 1/1
Ø  R2(config-if)#no ip address
Ø  R2(config-if)#ppp multilink group 1
Ø  R2(config-if)#exit
{Multilink interface Configuration}
Ø  R2(config)#interface multilink 1         {1 :- Group no.}
Ø  R2(config-if)#ip address 192.168.2.2 255.255.255.252
Ø  R2(config-if)#ppp multilink
Ø  R2(config-if)#end

Show & Troubleshooting Commands
Ø  Router# show interface multilink  1       {interface number}
Ø  Router# debug ppp multilink {option}



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