多区域OSPF的路由重发布

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zhuoyue_009 2009-10-11 19:56:06 博主文章分类：路由交换

一、场景设置

说明：R1 Serial1/0 R2 Serial1/1 R3 Serial1/0 R4。需要在RB上配置路由再分配。

二、具体配置

1、RA的配置如下：

Router(config)#hostname RA
RA(config)#interface Loopback0
RA(config-if)#ip address 1.1.1.1 255.255.255.0
RA(config-if)#ip ospf network point-to-point
RA(config-if)#exit
RA(config)#interface Serial1/0
RA(config-if)#ip address 199.99.1.1 255.255.255.0
RA(config-if)#no shutdown
RA(config-if)#exit
RA(config)#router rip
RA(config-router)#version 2
RA(config-router)#network 1.0.0.0
RA(config-router)#network 199.99.1.0
RA(config-router)#exit

2、RB的配置如下：

Router(config)#hostname RB
RB(config)#interface Loopback0
RB(config-if)#ip address 2.2.2.2 255.255.255.0
RB(config-if)#ip ospf network point-to-point
RB(config-if)#exit
RB(config)#interface Serial1/0
RB(config-if)#ip address 199.99.1.2 255.255.255.0
RB(config-if)#no shutdown
RB(config-if)#exit
RB(config)#interface Serial1/1
RB(config-if)#ip address 199.99.2.1 255.255.255.0
RB(config-if)#no shutdown
RB(config-if)#exit
RB(config)#router ospf 1
RB(config-router)#redistribute rip subnets
RB(config-router)#network 199.99.2.0 0.0.0.255 area 0
RB(config-router)#network 2.2.2.0 0.0.0.255 area 0
RB(config-router)#exit
RB(config)#router rip
RB(config-router)#version 2
RB(config-router)#redistribute ospf 1 metric 2
RB(config-router)#network 199.99.1.0
RB(config-router)#no auto-summary
RB(config-router)#exit

3、RC的配置如下：

RC(config)#hostname RC
RC(config)#interface Loopback0
RC(config-if)#ip address 3.3.3.3 255.255.255.0
RC(config-if)#ip ospf network point-to-point
RC(config-if)#exit
RC(config)#interface Serial1/1
RC(config-if)#ip address 199.99.2.2 255.255.255.0
RC(config-if)#no shutdown
RC(config-if)#exit
RC(config)#interface Serial1/0
RC(config-if)#ip address 199.99.3.1 255.255.255.0
RC(config-if)#no shutdown
RC(config-if)#exit
RC(config)#router ospf 1
RC(config-router)#network 3.3.3.0 0.0.0.255 area 1
RC(config-router)#network 199.99.2.0 0.0.0.255 area 0
RC(config-router)#network 199.99.3.0 0.0.0.255 area 1
RC(config-router)#exit

4、RD的配置如下：

Router(config)#hostname RD
RD(config)#interface Loopback0
RD(config-if)#ip address 4.4.4.4 255.255.255.0
RD(config-if)#ip ospf network point-to-point
RD(config-if)#exit
RD(config)#interface Serial1/0
RD(config-if)#ip address 199.99.3.2 255.255.255.0
RD(config-if)#no shutdown
RD(config-if)#exit
RD(config)#router ospf 1
RD(config-router)#network 4.4.4.0 0.0.0.255 area 1
RD(config-router)#network 199.99.3.0 0.0.0.255 area 1
RD(config-router)#exit

三、验证配置

1、查看各路由器相关接口的开启状态：

RA#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Serial1/0 199.99.1.1 YES manual up up

Loopback0 1.1.1.1 YES manual up up

RB#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Serial1/0 199.99.1.2 YES manual up up

Serial1/1 199.99.2.1 YES manual up up

Loopback0 2.2.2.2 YES manual up up

RC#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Serial1/0 199.99.3.1 YES manual up up

Serial1/1 199.99.2.2 YES manual up up

Loopback0 3.3.3.3 YES manual up up

RD#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Serial1/0 199.99.3.2 YES manual up up

Loopback0 4.4.4.4 YES manual up up

可见相关的接口及链路协议已经处于开启状态！

2、查看各路由器的路由表：

RA#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

     1.0.0.0/24 is subnetted, 1 subnets
C       1.1.1.0 is directly connected, Loopback0
     2.0.0.0/24 is subnetted, 1 subnets
R       2.2.2.0 [120/2] via 199.99.1.2, 00:00:17, Serial1/0
     3.0.0.0/24 is subnetted, 1 subnets
R       3.3.3.0 [120/2] via 199.99.1.2, 00:00:17, Serial1/0
     4.0.0.0/24 is subnetted, 1 subnets
R       4.4.4.0 [120/2] via 199.99.1.2, 00:00:17, Serial1/0
R    199.99.3.0/24 [120/2] via 199.99.1.2, 00:00:17, Serial1/0
R    199.99.2.0/24 [120/2] via 199.99.1.2, 00:00:17, Serial1/0
C    199.99.1.0/24 is directly connected, Serial1/0

RB#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

R    1.0.0.0/8 [120/1] via 199.99.1.1, 00:00:01, Serial1/0
     2.0.0.0/24 is subnetted, 1 subnets
C       2.2.2.0 is directly connected, Loopback0
     3.0.0.0/24 is subnetted, 1 subnets
O IA    3.3.3.0 [110/65] via 199.99.2.2, 00:09:57, Serial1/1
     4.0.0.0/24 is subnetted, 1 subnets
O IA    4.4.4.0 [110/129] via 199.99.2.2, 00:05:15, Serial1/1
O IA 199.99.3.0/24 [110/128] via 199.99.2.2, 00:06:06, Serial1/1
C    199.99.2.0/24 is directly connected, Serial1/1
C    199.99.1.0/24 is directly connected, Serial1/0

RC#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

O E2 1.0.0.0/8 [110/20] via 199.99.2.1, 00:06:10, Serial1/1
     2.0.0.0/24 is subnetted, 1 subnets
O       2.2.2.0 [110/65] via 199.99.2.1, 00:07:01, Serial1/1
     3.0.0.0/24 is subnetted, 1 subnets
C       3.3.3.0 is directly connected, Loopback0
     4.0.0.0/24 is subnetted, 1 subnets
O       4.4.4.0 [110/65] via 199.99.3.2, 00:06:10, Serial1/0
C    199.99.3.0/24 is directly connected, Serial1/0
C    199.99.2.0/24 is directly connected, Serial1/1
O E2 199.99.1.0/24 [110/20] via 199.99.2.1, 00:06:10, Serial1/1

RD#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

O E2 1.0.0.0/8 [110/20] via 199.99.3.1, 00:06:56, Serial1/0
     2.0.0.0/24 is subnetted, 1 subnets
O IA    2.2.2.0 [110/129] via 199.99.3.1, 00:06:56, Serial1/0
     3.0.0.0/24 is subnetted, 1 subnets
O       3.3.3.0 [110/65] via 199.99.3.1, 00:06:56, Serial1/0
     4.0.0.0/24 is subnetted, 1 subnets
C       4.4.4.0 is directly connected, Loopback0
C    199.99.3.0/24 is directly connected, Serial1/0
O IA 199.99.2.0/24 [110/128] via 199.99.3.1, 00:06:56, Serial1/0
O E2 199.99.1.0/24 [110/20] via 199.99.3.1, 00:06:56, Serial1/0

3、在运行了OSPF协议的路由器查看邻居：

RB#show ip ospf neighbor

Neighbor ID Pri State Dead Time Address Interface
3.3.3.3 0 FULL/ - 00:00:38 199.99.2.2 Serial1/1

RC#show ip ospf neighbor

Neighbor ID     Pri   State           Dead Time   Address         Interface
2.2.2.2                0      FULL/ -       00:00:31       199.99.2.1      Serial1/1
4.4.4.4                0      FULL/ -       00:00:34       199.99.3.2      Serial1/0

RD#show ip ospf neighbor

Neighbor ID Pri State Dead Time Address Interface
3.3.3.3 0 FULL/ - 00:00:33 199.99.3.1 Serial1/0

4、在运行了OSPF协议的路由器查看OSPF数据库：

RB#show ip ospf database

OSPF Router with ID (2.2.2.2) (Process ID 1)

Router Link States (Area 0)

Link ID      ADV Router      Age        Seq#              Checksum Link count
2.2.2.2         2.2.2.2                776         0x80000004   0x00D838   3
3.3.3.3         3.3.3.3                772         0x80000002   0x00DC49  2

Summary Net Link States (Area 0)

Link ID      ADV Router      Age        Seq#              Checksum
3.3.3.0         3.3.3.3                780         0x80000001   0x00CC5A
4.4.4.0         3.3.3.3                481         0x80000001   0x002BB8
199.99.3.0      3.3.3.3             532         0x80000001   0x00C2FF

Type-5 AS External Link States

Link ID      ADV Router      Age         Seq#              Checksum   Tag
1.0.0.0         2.2.2.2                1328        0x80000001 0x009EF8    0
199.99.1.0      2.2.2.2             1328        0x80000001   0x00D299     0

RC#show ip ospf database

OSPF Router with ID (3.3.3.3) (Process ID 1)

Router Link States (Area 0)

Link ID      ADV Router      Age        Seq#               Checksum   Link count
2.2.2.2         2.2.2.2                791         0x80000004    0x00D838    3
3.3.3.3         3.3.3.3                786         0x80000002    0x00DC49   2

Summary Net Link States (Area 0)

Link ID      ADV Router      Age        Seq#               Checksum
3.3.3.0         3.3.3.3                794         0x80000001    0x00CC5A
4.4.4.0         3.3.3.3               494         0x80000001    0x002BB8
199.99.3.0      3.3.3.3             545         0x80000001    0x00C2FF

Router Link States (Area 1)

Link ID      ADV Router      Age        Seq#               Checksum Link count
3.3.3.3         3.3.3.3                509         0x80000004    0x0010F0    3
4.4.4.4         4.4.4.4                508         0x80000003    0x000FEB   3

Summary Net Link States (Area 1)

Link ID      ADV Router      Age        Seq#               Checksum
2.2.2.0         3.3.3.3                779         0x80000001    0x007376
199.99.2.0      3.3.3.3             809         0x80000001    0x00CDF5

Summary ASB Link States (Area 1)

Link ID ADV Router Age Seq# Checksum
2.2.2.2 3.3.3.3 799 0x80000001 0x0047A0

Type-5 AS External Link States

Link ID      ADV Router      Age         Seq#              Checksum Tag
1.0.0.0         2.2.2.2                1363        0x80000001   0x009EF8    0
199.99.1.0      2.2.2.2             1365        0x80000001   0x00D299    0

RD#show ip ospf database

OSPF Router with ID (4.4.4.4) (Process ID 1)

Router Link States (Area 1)

Link ID      ADV Router      Age        Seq#               Checksum   Link   count
3.3.3.3         3.3.3.3                523         0x80000004    0x0010F0     3
4.4.4.4         4.4.4.4                522         0x80000003    0x000FEB    3

Summary Net Link States (Area 1)

Link ID      ADV Router      Age        Seq#               Checksum
2.2.2.0         3.3.3.3                793         0x80000001    0x007376
199.99.2.0      3.3.3.3             803         0x80000001    0x00CDF5

Summary ASB Link States (Area 1)

Link ID ADV Router Age Seq# Checksum
2.2.2.2 3.3.3.3 793 0x80000001 0x0047A0

Type-5 AS External Link States

Link ID      ADV Router      Age         Seq#              Checksum Tag
1.0.0.0         2.2.2.2                1357        0x80000001   0x009EF8    0
199.99.1.0      2.2.2.2             1359        0x80000001   0x00D299    0