PPP身份认证？你了解吗？

通过对PPP协议的了解，我们发现，PPP身份认证是一个非常重要的内容。那么在认证过程中，也分为了不同的阶段。那么这里我们就来看看具体的内容吧。先看一下使用的拓扑：

PAP双向身份认证

R1配置如下：

config t

hostname R1

username R1 password komy

interface s0/0/0

ip address 192.168.1.2 255.255.255.252

encapsulation ppp

ppp authentication pap

ppp pap sent-username R2 password komy

no shutdown

R2配置如下：

config t

hostname R2

username R2 password komy

int s0/0/0

clock rate 4000000

ip address 192.168.1.1 255.255.255.252

encapsulation ppp

ppp authentication pap

ppp pap sent-username R1 password komy

no shutdown

PAP单向身份认证

R1配置如下（被认证方）：

config t

hostname R1

interface s0/0/0

ip address 192.168.1.2 255.255.255.252

encapsulation ppp

ppp pap sent-username R2 password komy

no shutdown

R2配置如下(主认证方)：

config t

hostname R2

username R2 password komy

int s0/0/0

clock rate 4000000

ip address 192.168.1.1 255.255.255.252

encapsulation ppp

ppp authentication pap

no shutdown

CHAP双向身份认证

config t

hostname R1

username R2 password komy

int s0/0/0

ip address 192.168.1.2 255.255.255.252

encapsulation ppp

ppp authentication chap

no shutdown

R2:

config t

hostname R2

username R1 password komy

int s0/0/0

clock rate 4000000

ip address 192.168.1.1 255.255.255.252

encapsulation ppp

ppp authentication chap

no shutdown

CHAP单向身份认证

R1(CHAP被认证方):

config t

hostname R1

username R2 password komy

int s0/0/0

ip address 192.168.1.2 255.255.255.252

encapsulation ppp

no shutdown

R2(CHAP主认证方):

config t

hostname R2

username R1 password komy

int s0/0/0

clock rate 4000000

ip address 192.168.1.1 255.255.255.252

encapsulation ppp

ppp authentication chap

no shutdown

来自：http://hi.baidu.com/51cmdshell