日志

OSPF基本配置案例

已有 607 次阅读2013-2-25 17:54

1 案例配置拓扑

2 IP地址规划

	Fastethernet0/0	Fastethernet1/0
R1	192168.12.1/24	N/A
R2	192.168.12.2/24	192.168.23.2/24
R3	192.168.23.3/24	N/A

3 案例配置需求

1. R1、R2、R3三台路由器运行OSPF协议，进程为1 。

2. 指定R1、R2、R3的Router-id分别为1.1.1.1、2.2.2.2、3.3.3.3 ，并实现设备能相互通信。

3. 查看路由的协议、路由表、邻居表。

4 案例配置思路

一：先配R1、R2、R3的接口地址。

(config)#interface fastEthernet 0/0

(config-if)#ip address x.x.x.x x.x.x.x

二：R1/R2/R3运行OSPF协议，进程为1。

(config)#router ospf 1 //开启OSPF协议，进程号为1//

(config-router)#router-id x.x.x.x //手动指定Router-id//

5 案例检验结果

1) 先查看路由的协议：

R1#show ip protocols

Routing Protocol is "ospf 1"

Outgoing ** filter list for all interfaces is not set

Incoming ** filter list for all interfaces is not set

Router ID 1.1.1.1

Number of areas in this router is 1. 1 normal 0 stub 0 nssa

Maximum path: 4

Routing for Networks:

192.168.12.0 0.0.0.255 area 0

Reference bandwidth unit is 100 mbps

Routing Information Sources:

Gateway Distance Last **

3.3.3.3 110 00:20:56

Distance: (default is 110)

/上面显示的OSPF协议，且进程号为1，AD（管理距离）默认为110/

2) 查看运行OSPF时，默认的网络类型是什么：

R1#show ip ospf int fastEthernet 0/0

FastEthernet0/0 is up, line protocol is up

Internet Address 192.168.12.1/24, Area 0

Process ID 1, Router ID 1.1.1.1, Network Type BROADCAST, Cost: 1

Transmit Delay is 1 sec, State BDR, Priority 1

Designated Router (ID) 2.2.2.2, Interface address 192.168.12.2

Backup Designated router (ID) 1.1.1.1, Interface address 192.168.12.1

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

oob-resync timeout 40

Hello due in 00:00:09

Supports Link-local Signaling (LLS)

Index 1/1, flood queue length 0

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

Last flood scan length is 1, maximum is 1

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

Neighbor Count is 1, Adjacent neighbor count is 1

Adjacent with neighbor 2.2.2.2 (Designated Router)

Suppress hello for 0 neighbor(s)

/上面显示的是默认下运行OSPF的网络类型为广播（BROADCAST），且hello时间为10S、dead时间为40S/

3) 查看邻居表：

R2#show ip ospf neighbor

Neighbor ID Pri State Dead Time Address Interface

3.3.3.3 1 FULL/DR 00:00:32 192.168.23.3 FastEthernet1/0

1.1.1.1 1 FULL/BDR 00:00:32 192.168.12.1 FastEthernet0/0

/上面显示的是FULL（在广播网络环境，邻居建立成功显示的FULL），代表的是OSPF邻居建立成功，且优先级为1/

4) 查看路由表：

R1#show ip route

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

C 192.168.12.0/24 is directly connected, FastEthernet0/0

O 192.168.23.0/24 [110/2] via 192.168.12.2, 00:32:57, FastEthernet0/0

/上面显示的O表示OSPF的路由条目/

6 案例配置文件

R1：

enable
conf t
hostname R1
!
interface FastEthernet0/0
ip address 192.168.12.1 255.255.255.0
no shutdown
exit
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
network 192.168.12.0 0.0.0.255 area 0
!
end

R2：

enable
conf t
hostname R2
!
interface FastEthernet0/0
ip address 192.168.12.2 255.255.255.0
no shutdown
exit
!
interface FastEthernet1/0
ip address 192.168.23.2 255.255.255.0
no shutdown
exit
!
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
network 192.168.12.0 0.0.0.255 area 0
network 192.168.23.0 0.0.0.255 area 0
!
end

R3：

enable
conf t
hostname R3
!
interface FastEthernet0/0
ip address 192.168.23.3 255.255.255.0
no shutdown
exit
!
router ospf 1
router-id 3.3.3.3
log-adjacency-changes
network 192.168.23.0 0.0.0.255 area 0
!
end