澳客彩票官网

7*24小时值班咨询手机:15101073985(微信同号)   
CCIE
当前位置:网站首页>CCIE
简述OSPF虚链路实例!
发布日期:2020-08-04 10:29:17 发布者:
今天小编和大家一起分享有关OSPF虚链路实例,希望可以帮到你!欢迎你的来电咨询!

实验目标:

R1的Loopback0能与R4的Loopback0能互通。

实验环境:

1.R1和R2相接为Area0。

2.R2和R3相接为Area1。

3.R3和R4相接为Area2。

解决方法:在R2和R3之间通过虚链路技术搭一条逻辑通道,此彼此路由器分享其路由。

R1:

interface Loopback0

ip address 1.1.1.1 255.255.255.255

interface FastEthernet0/0

ip address 12.1.1.1 255.255.255.0

no sh

router ospf 1

router-id 1.1.1.1

network 1.1.1.1 0.0.0.0 area 0

network 12.1.1.0 0.0.0.255 area 0

R2:

interface Loopback0

ip address 2.2.2.2 255.255.255.255

interface FastEthernet0/0

ip address 12.1.1.2 255.255.255.0

no sh

interface FastEthernet0/1

ip address 23.1.1.2 255.255.255.0

no sh

router ospf 1

router-id 2.2.2.2

area 1 virtual-link 3.3.3.3      //在R2和R3(ABR)之间,建立一条逻辑的连接通道,让彼此路由器分享其对方。

network 2.2.2.2 0.0.0.0 area 1

network 12.1.1.0 0.0.0.255 area 0

network 23.1.1.0 0.0.0.255 area 1

R3:

interface Loopback0

ip address 3.3.3.3 255.255.255.255

interface FastEthernet0/0

ip address 34.1.1.3 255.255.255.0

no sh

interface FastEthernet0/1

ip address 23.1.1.3 255.255.255.0

no sh

router ospf 1

router-id 3.3.3.3

area 1 virtual-link 2.2.2.2        //同上说法。

network 3.3.3.3 0.0.0.0 area 1

network 23.1.1.0 0.0.0.255 area 1

network 34.1.1.0 0.0.0.255 area 2

R4:

interface Loopback0

ip address 4.4.4.4 255.255.255.255

interface FastEthernet0/0

ip address 34.1.1.4 255.255.255.0

no sh

router ospf 1

router-id 4.4.4.4

network 4.4.4.4 0.0.0.0 area 2

network 34.1.1.0 0.0.0.255 area 2

R2(config-router)#do show ip ospf vir

Virtual Link OSPF_VL0 to router 3.3.3.3 is up  //这个位置的”UP”不表代邻接关系建立起来,而要看下图的邻接关系是否建立成功。

Run as demand circuit

DoNotAge LSA allowed.

Transit area 1, via interface FastEthernet0/1, Cost of using 10

Transmit Delay is 1 sec, State POINT_TO_POINT,   //虚链路是点到点的网络类型

Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5

Hello due in 00:00:06

Adjacency State FULL (Hello suppressed)  //此时代表邻接关系建立,虚链路才真正开始工作

Index 2/3, retransmission queue length 0, number of retransmission 0

First 0x0(0)/0x0(0) Next 0x0(0)/0x0(0)

Last retransmission scan length is 0, maximum is 0

Last retransmission scan time is 0 msec, maximum is 0 msec

R1#ping 4.4.4.4

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 40/46/52 ms

R4#ping 1.1.1.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 36/60/92 ms

R2(config-router)#do show ip ospf ne

Neighbor ID     Pri   State           Dead Time   Address         Interface

3.3.3.3           0   FULL/  -           -        23.1.1.3        OSPF_VL0

1.1.1.1           1   FULL/DR         00:00:38    12.1.1.1        FastEthernet0/0

3.3.3.3           1   FULL/DR         00:00:34    23.1.1.3        FastEthernet0/1

R3(config-router)#do show ip ospf ne

Neighbor ID     Pri   State           Dead Time   Address         Interface

2.2.2.2           0   FULL/  -           -        23.1.1.2        OSPF_VL0

2.2.2.2           1   FULL/BDR        00:00:32    23.1.1.2        FastEthernet0/1

4.4.4.4           1   FULL/BDR        00:00:30    34.1.1.4        FastEthernet0/0

微信