配置一下路由器接口

R1#sh ip int b

Interface IP-Address OK? Method Status Protocol

Serial1/0 unassigned YES unset administratively down down

Serial1/1 unassigned YES unset administratively down down

Serial1/2 unassigned YES unset administratively down down

Serial1/3 unassigned YES unset administratively down down

R1#

R1#conf t

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

R1(config)#int s1/1

R1(config-if)#ip address 12.12.12.1 255.255.255.252

R1(config-if)#no sh

R1(config-if)#

*Mar 1 00:05:29.123: %LINK-3-UPDOWN: Interface Serial1/1, changed state to up

*Mar 1 00:05:30.123: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/1, changed state to up

R1(config-if)#

R1#sh ip int b

Interface IP-Address OK? Method Status Protocol

Serial1/0 unassigned YES unset administratively down down

Serial1/1 12.12.12.1 YES manual up down

Serial1/2 unassigned YES unset administratively down down

Serial1/3 unassigned YES unset administratively down down

R1#

中間路由器

R2#conf t

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

R2(config)#int s1/0

R2(config-if)#ip ad

R2(config-if)#ip address 12.12.12.2 255.255.255.252

R2(config-if)#no sh

R2(config-if)#

*Mar 1 00:07:36.079: %LINK-3-UPDOWN: Interface Serial1/0, changed state to up

*Mar 1 00:07:37.079: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0, changed state to up

R2(config-if)#do ping 12.12.12.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 12.12.12.1, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)

直連怎麽可能沒通，再來

R2(config-if)#do ping 12.12.12.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 12.12.12.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 20/24/32 ms

好了

R2#sh ip int br

Interface IP-Address OK? Method Status Protocol

Serial1/0 12.12.12.2 YES manual up up

Serial1/1 unassigned YES unset administratively down down

Serial1/2 unassigned YES unset administratively down down

Serial1/3 unassigned YES unset administratively down down

R2#conf t

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

R2(config)#int s1/1

R2(config-if)#ip add

R2(config-if)#ip address 23.23.23.1 255.255.255.252

R2(config-if)#no sh

R2(config-if)#

*Mar 1 00:10:07.467: %LINK-3-UPDOWN: Interface Serial1/1, changed state to up

*Mar 1 00:10:08.467: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/1, changed state to up

R2(config-if)#

R2#sh ip int b

Interface IP-Address OK? Method Status Protocol

Serial1/0 12.12.12.2 YES manual up up

Serial1/1 23.23.23.1 YES manual up down

Serial1/2 unassigned YES unset administratively down down

Serial1/3 unassigned YES unset administratively down down

R2#

2個ip都好了

最右面的

R3(config)#int s1/0

R3(config-if)#ip address 23.23.23.2 255.255.255.252

R3(config-if)#no sh

R3(config-if)#

*Mar 1 00:12:58.627: %LINK-3-UPDOWN: Interface Serial1/0, changed state to up

*Mar 1 00:12:59.627: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1/0, changed state to up

R3(config-if)#

R3#sh ip int b

Interface IP-Address OK? Method Status Protocol

Serial1/0 23.23.23.2 YES manual up up

Serial1/1 unassigned YES unset administratively down down

Serial1/2 unassigned YES unset administratively down down

Serial1/3 unassigned YES unset administratively down down

R3#ping 23.23.23.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 23.23.23.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 16/21/28 ms

R3#

開始配置rip

R1(config)#router rip

R1(config-router)#version 2

R1(config-router)#no auto-summary

R1(config-router)#network 12.0.0.0

R2(config)#router rip

R2(config-router)#version 2

R2(config-router)#no auto-summary

R2(config-router)#network 12.0.0.0

R2(config-router)#network 23.0.0.0

R3(config)#router rip

R3(config-router)#version 2

R3(config-router)#no auto-summary

R3(config-router)#network 23.0.0.0

R1已經有路由表了

R1#sh ip ro

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

23.0.0.0/30 is subnetted, 1 subnets

R 23.23.23.0 [120/1] via 12.12.12.2, 00:00:14, Serial1/1

12.0.0.0/30 is subnetted, 1 subnets

C 12.12.12.0 is directly connected, Serial1/1

R1#ping 23.23.23.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 23.23.23.2, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 20/54/76 ms

開一下debug看事件

R1#debug ip rip data

R1#debug ip rip database

RIP database events debugging is on

R1#debug ip rip events

RIP event debugging is on

R1#debug ip rip trigger

RIP trigger debugging is on

R1#debug ip rip

其余兩個常用命令

R1#sh ip ro

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

23.0.0.0/30 is subnetted, 1 subnets

R 23.23.23.0 [120/1] via 12.12.12.2, 00:00:02, Serial1/1

12.0.0.0/30 is subnetted, 1 subnets

C 12.12.12.0 is directly connected, Serial1/1

R1#

*Mar 1 00:26:59.175: RIP-TIMER: age timer expired

R1#sh ip pro

R1#sh ip protocols

Routing Protocol is "rip"

Sending updates every 30 seconds, next due in 13 seconds

Invalid after 180 seconds, hold down 180, flushed after 240

Outgoing update filter list for all interfaces is not set

Incoming update filter list for all interfaces is not set

Redistributing: rip

Default version control: send version 2, receive version 2

Interface Send Recv Triggered RIP Key-chain

Serial1/1 2 2

Automatic network summarization is not in effect

Maximum path: 4

Routing for Networks:

12.0.0.0

Routing Information Sources:

Gateway Distance Last Update

12.12.12.2 120 00:00:12

Distance: (default is 120)

命令1分鐘，截圖5分鐘

CCNA RIP 實驗