Packet Tracer 5.0建构CCNA实验攻略(12)――PPP

PPP(Point to Point Protocol)数据链路层协议。两种认证方式：一种是PAP，一种是CHAP。相对来说PAP的认证方式安全性没有CHAP高。PAP在传输password是明文的，而CHAP在传输过程中不传输密码，PAP认证是通过两次握手实现的，而CHAP则是通过3次握手实现的。

　　一、实验配置拓扑图

图一

　　二、PPP的基本配置命令

　　Router(config-if)#encapsulation PPP

　　 Router(config-if)#PPP multilink

　　 Router(config-if)#PPP authentication chap

　　三、配置PPP

图二　路由器Boson上配置PPP的命令

图三   Newyork上配置PPP的命令

图四　启用RIP路由协议，两个路由器要配置RIP

Boson路由器的配置：

Boston#sh running-config

Building configuration...

Current configuration : 652 bytes

!

version 12.4

no service password-encryption

!

hostname Boston

!

!

!

!

!

username Newyork password 0 senya

!

ip ssh version 1

no ip domain-lookup

!

!

interface FastEthernet0/0

no ip address

duplex auto

speed auto

shutdown

!

interface FastEthernet0/1

ip address 192.168.1.1 255.255.255.0

duplex auto

speed auto

!

interface Serial0/3/0

description Link to Router Newyork

ip address 192.168.2.1 255.255.255.0

encapsulation ppp

ppp authentication chap

clock rate 56000

!

interface Vlan1

no ip address

shutdown

!

router rip

version 2

network 192.168.1.0

network 192.168.2.0

!

ip classless

!

!

!

!

!

line con 0

line vty 0 4

login

!

!

end

Newyork路由器的配置：

Newyork#sh running-config

Building configuration...

Current configuration : 606 bytes

!

version 12.4

no service password-encryption

!

hostname Newyork

!

!

!

!

!

username Boston password 0 senya

!

ip ssh version 1

!

!

interface FastEthernet0/0

no ip address

duplex auto

speed auto

shutdown

!

interface FastEthernet0/1

ip address 192.168.3.1 255.255.255.0

duplex auto

speed auto

!

interface Serial0/3/0

description link to Boston

ip address 192.168.2.2 255.255.255.0

encapsulation ppp

ppp authentication chap

!

interface Vlan1

no ip address

shutdown

!

router rip

version 2

network 192.168.2.0

network 192.168.3.0

!

ip classless

!

!

!

!

!

line con 0

line vty 0 4

login

!

!

end

图五　配置计算机的IP地址及网关