路由器配置rip（结合cdp）

小凡模拟器，ios版本为3640，两台路由器R1,R2

R1:

Router>

Router>ena

Router#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#hostname R1

R1(config)#int s1/0

R1(config-if)#ip add 192.168.2.1 255.255.255.0

R1(config-if)#no shut

R1(config-if)#

*Mar 1 00:03:31.115: %LINK-3-UPDOWN: Interface Serial1/0, changed state to up

*Mar 1 00:03:32.115: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0,

changed state to up

R1(config-if)#exit

R1(config)#router rip

R1(config-router)#network 192.168.2.0

R1(config-router)#neighbor 192.168.2.2

R1(config-router)#exit

R1(config)#exit

R1#pin

*Mar 1 00:05:22.023: %SYS-5-CONFIG_I: Configured from console by consoleg

Protocol [ip]:

Target IP address:

% Bad IP address

R1#ping 192.168.2.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.2.2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 8/34/56 ms

R1#

R2：

Router>ena

Router#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#hostname R2

R2(config)#int s1/0

R2(config-if)#ip add 192.168.2.2 255.255.255.0

R2(config-if)#no shut

R2(config-if)#exit

R2(config)#exit

R2#

R2#ping 192.168.2.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 4/21/48 ms

R2#

这个实验里面我并没有为任何一台路由器配置时钟频率，但串口照样可以通信，这里另外说明一点，在cisco路由器中，CDP（路由发现协议）默认是全局启动的，因此这里直接用到了neighbor命令。

补充一个实验(配置时钟频率和带宽来实现串口通信)：

R1:

Router>ena

Router#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#hostname R1

R1(config)#int s1/0

R1(config-if)#ip add 192.168.2.1 255.255.255.0

R1(config-if)#clock rate 64000

R1(config-if)#bandwidth 64

R1(config-if)#no shut

R1(config-if)#exit

R1(config)#

*Mar 1 00:02:18.879: %LINK-3-UPDOWN: Interface Serial1/0, changed state to up

*Mar 1 00:02:19.879: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0,

changed state to up

*Mar 1 00:02:48.847: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0,

changed state to down

R1(config)#

*Mar 1 00:03:08.831: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0,

changed state to upe

% Ambiguous command: "e"

R1(config)#exit

R1#

*Mar 1 00:03:13.563: %SYS-5-CONFIG_I: Configured from console by console

R1#

R2:

Router>ena

Router#conf t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#hostname R2

R2(config)#int s1/0

R2(config-if)#ip add 192.168.2.2 255.255.255.0

R2(config-if)#no shut

R2(config-if)#exit

R2(config)#

*Mar 1 00:02:42.227: %LINK-3-UPDOWN: Interface Serial1/0, changed state to up

*Mar 1 00:02:43.227: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0,

changed state to upexit

R2#

*Mar 1 00:02:45.455: %SYS-5-CONFIG_I: Configured from console by console

配置了时钟频率才能通信，否则，就算当时启用了，过会儿又down了。