单区域OSPF路由协议的配置

2.各路由器上配置完成后的 show run

  a. r1#show run 

Building configuration…

Current configuration : 645 bytes

!

version 12.4

no service timestamps log datetime msec

no service timestamps debug datetime msec

no service password-encryption

!

hostname r1

!

!

  www.zhishiwu.com  

interface Loopback0

 ip address 11.11.1.1 255.255.255.0

!

interface FastEthernet0/0

 ip address 172.16.123.1 255.255.255.0

 duplex auto

 speed auto

!

interface FastEthernet0/1

 ip address 10.10.1.254 255.255.255.0

 duplex auto

 speed auto

!

interface Vlan1

 no ip address

 shutdown

!

router ospf 100

 log-adjacency-changes

 network 172.16.123.1 0.0.0.0 area 0

 network 10.10.1.254 0.0.0.0 area 0

!

ip classless

!

!

line con 0

line vty 0 4

 login

!

!

end入内容   b. r2#

r2#show run

Building configuration…

Current configuration : 666 bytes

!

version 12.4

no service timestamps log datetime msec

no service timestamps debug datetime msec

no service password-encryption

!

hostname r2

!

!

interface Loopback0

 ip address 22.22.2.2 255.255.255.0

!

interface FastEthernet0/0

 ip address 172.16.123.2 255.255.255.0

 duplex auto

 speed auto

!

interface FastEthernet0/1

 ip address 10.10.2.254 255.255.255.0

 duplex auto

 speed auto

!

interface Vlan1

 no ip address

 shutdown

!

router ospf 100

 router-id 22.22.2.2

 log-adjacency-changes

 network 172.16.123.2 0.0.0.0 area 0

 network 10.10.2.254 0.0.0.0 area 0

!

ip classless

!

!

line con 0

line vty 0 4

 login

!

!

end   c.

  www.zhishiwu.com   r3#

r3#show run

Building configuration…

Current configuration : 645 bytes

!

version 12.4

no service timestamps log datetime msec

no service timestamps debug datetime msec

no service password-encryption

!

hostname r3

!

!

interface Loopback0

 ip address 33.33.3.3 255.255.255.0

!

interface FastEthernet0/0

 ip address 172.16.123.3 255.255.255.0

 duplex auto

 speed auto

!

interface FastEthernet0/1

 ip address 10.10.3.254 255.255.255.0

 duplex auto

 speed auto

!

interface Vlan1

 no ip address

 shutdown

!

router ospf 100

 log-adjacency-changes

 network 172.16.123.3 0.0.0.0 area 0

 network 10.10.3.254 0.0.0.0 area 0

!

ip classless

!

!

line con 0

line vty 0 4

 login

!

!

end

3.查看邻居表、拓扑表、路由表

  a. r1#show ip ospf nei

Neighbor ID Pri   State   Dead Time   Address Interface

22.22.2.2 1   FULL/BDR 00:00:35 172.16.123.2 FastEthernet0/0

33.33.3.3 1   FULL/DROTHER 00:00:31 172.16.123.3 FastEthernet0/0

r1#show ip ospf nei

Neighbor ID Pri   State   Dead Time   Address Interface

22.22.2.2 1   FULL/BDR 00:00:30 172.16.123.2 FastEthernet0/0

33.33.3.3 1   FULL/DROTHER 00:00:36 172.16.123.3 FastEthernet0/0

r1#show ip route

Codes: C – connected, S – static, I – IGRP, 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, E – EGP

i – IS-IS, 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

 10.0.0.0/24 is subnetted, 3 subnets

C   10.10.1.0 is directly connected, FastEthernet0/1

O   10.10.2.0 [110/2] via 172.16.123.2, 00:06:07, FastEthernet0/0

O   10.10.3.0 [110/2] via 172.16.123.3, 00:05:57, FastEthernet0/0

 11.0.0.0/24 is subnetted, 1 subnets

C   11.11.1.0 is directly connected, Loopback0

 172.16.0.0/24 is subnetted, 1 subnets

C   172.16.123.0 is directly connected, FastEthernet0/0

r1# b. r2#show ip ospf nei

Neighbor ID Pri   State   Dead Time   Address Interface

11.11.1.1 1   FULL/DR 00:00:38 172.16.123.1 FastEthernet0/0

33.33.3.3 1   FULL/DROTHER 00:00:31 172.16.123.3 FastEthernet0/0

r2#show ip ospf data

OSPF Router with ID (22.22.2.2) (Process ID 100)

Router Link States (Area 0)

Link ID ADV Router  Age Seq#   Checksum Link count

172.16.123.1 172.16.123.1 2475 0x80000003 0x0055f2 2

172.16.123.2 172.16.123.2 1926 0x80000005 0x006ed2 2

172.16.123.3 172.16.123.3 1651 0x80000007 0x0087b2 2

22.22.2.2   22.22.2.2   489 0x80000007 0x0063f0 2

11.11.1.1   11.11.1.1   489 0x80000007 0x003254 2

33.33.3.3   33.33.3.3   469 0x80000003 0x009c89 2

Net Link States (Area 0)

Link ID ADV Router  Age Seq#   Checksum

172.16.123.1 11.11.1.1   469 0x80000004 0x00fd41

r2#show ip route

Codes: C – connected, S – static, I – IGRP, 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, E – EGP

i – IS-IS, 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

 10.0.0.0/24 is subnetted, 3 subnets

O   10.10.1.0 [110/2] via 172.16.123.1, 00:07:57, FastEthernet0/0

C   10.10.2.0 is directly connected, FastEthernet0/1

O   10.10.3.0 [110/2] via 172.16.123.3, 00:07:47, FastEthernet0/0

 22.0.0.0/24 is subnetted, 1 subnets

C   22.22.2.0 is directly connected, Loopback0

 172.16.0.0/24 is subnetted, 1 subnets

C   172.16.123.0 is directly connected, FastEthernet0/0

r2# c. r3#show ip ospf nei

Neighbor ID Pri   State   Dead Time   Address Interface

22.22.2.2 1   FULL/BDR 00:00:33 172.16.123.2 FastEthernet0/0

11.11.1.1 1   FULL/DR 00:00:37 172.16.123.1 FastEthernet0/0

r3#show ip ospf data

OSPF Router with ID (33.33.3.3) (Process ID 100)

Router Link States (Area 0)

Link ID ADV Router  Age Seq#   Checksum Link count

172.16.123.1 172.16.123.1 2546 0x80000003 0x0055f2 2

172.16.123.2 172.16.123.2 1997 0x80000005 0x006ed2 2

172.16.123.3 172.16.123.3 1722 0x80000007 0x0087b2 2

22.22.2.2   22.22.2.2   560 0x80000007 0x0063f0 2

11.11.1.1   11.11.1.1   560 0x80000007 0x003254 2

33.33.3.3   33.33.3.3   540 0x80000003 0x009c89 2

Net Link States (Area 0)

Link ID ADV Router  Age Seq#   Checksum

172.16.123.1 11.11.1.1   540 0x80000004 0x00fd41

r3#show ip route

Codes: C – connected, S – static, I – IGRP, 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, E – EGP

i – IS-IS, 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

  www.zhishiwu.com  

Gateway of last resort is not set

 10.0.0.0/24 is subnetted, 3 subnets

O   10.10.1.0 [110/2] via 172.16.123.1, 00:08:59, FastEthernet0/0

O   10.10.2.0 [110/2] via 172.16.123.2, 00:08:59, FastEthernet0/0

C   10.10.3.0 is directly connected, FastEthernet0/1

 33.0.0.0/24 is subnetted, 1 subnets

C   33.33.3.0 is directly connected, Loopback0

 172.16.0.0/24 is subnetted, 1 subnets

C   172.16.123.0 is directly connected, FastEthernet0/0

r3#

备注：在Packet Tracer环境中，如开始没有配置router-id，之后才配置loopback 0 IP地址，loopback地址不会自动成为router-id，而需要保存配置后，用reload命令重启路由器。