单区域OSPF路由协议的配置
本文共 6738 字，大约阅读时间需要 22 分钟。
1.拓扑图
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
!
!
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.
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
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。
本文转自kindIT 51CTO博客，原文链接：http://blog.51cto.com/kindit/1019844 ，如需转载请自行联系原作者
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