详解BSCI实验三、配置OSPF与EIGRP的路由再发布
实验三、配置Ospf与Eigrp的路由再发布
环境：三台路由器串口相连，接口配置如图
要求：
1.配置
EIGRP和关闭自动路由汇总
2.在
R1上配置
LOOP口的
EIGRP手工路由汇总
3.在
R2和
R3配置
Ospf 接口验证
4.在
ASBR（
R2）上做
eigrp和
ospf双向再发布
5.在
R3上将所有
loopback 口再发布到
ospf中，但
loopback2不能被
R2，
R3学到，不允许使用
network命令
6.练习本课所有
show命令
步骤一：配置三个路由器接口使其连通。
R1的配置
R1(config)# interface Loopback0
R1(config-if)#ip address 172.168.1.1 255.255.255.0
R1(config)# interface Loopback1
R1(config-if)#ip address 172.168.2.1 255.255.255.0
R1(config)#interface Loopback2
R1(config-if)#ip address 172.168.3.1 255.255.255.0
R1(config)# interface s0
R1(config-if)# ip address 10.1.1 .1 255.255.255.0
R1(config-if)#clock rate 64000
R1(config-if)#no shutdown
R2的配置
R2(config)#interface s0
R2(config-if)#ip address 20.1.1 .1 255.255.255.0
R2(config-if)#no shutdown
R2(config)#interface s1
R2(config-if)# ip address 10.1.1 .1 255.255.255.0
R2(config-if)#no shutdown
R3的配置
R3(config)# interface Loopback0
R3(config-if)#ip address 192.168.1.1 255.255.255.0
R3(config)# interface Loopback1
R3(config-if)#ip address 192.168.2.1 255.255.255.0
R3(config)#interface Loopback2
R3(config-if)#ip address 192.168.3.1 255.255.255.0
R3(config)# interface s1
R3(config-if)# ip address 20.1.1 .2 255.255.255.0
R3(config-if)#clock rate 64000
R3(config-if)#no shutdown
步骤二： 配置Eigrp ,Ospf
R1的配置
R1(config)# router eigrp 100 à启用
EIGRP
R1(config-router)# network 10.1.1 .0 0.0.0.255 à发布相应接口
R1(config-router)#network 172.168.1.0 0.0.0 .255
R1(config-router)#network 172.168.2.0 0.0.0 .255
R1(config-router)#network 172.168.3.0 0.0.0 .255
R1(config-router)# no auto-summary à关闭自动汇总
R2的配置
R2(config)# router eigrp 100
R2(config-router)# network 10.1.1 .0 0.0.0.255
R2(config-router)# no auto-summary
R2(config)# router ospf 10 à在
R2上即启用
EIGRP并且启用
OSPF
R2(config-router)# network 20.1.1 .0 0.0.0.255 area 0
R3的配置
R3(config)# router ospf 10
R3(config-router)# network 20.1.1 .0 0.0.0.255 area 0
步骤三：配置
EIGRP手工路由汇总和
Ospf接口验证
R1的配置
R1(config)# interface s0
R1(config-if)# ip summary-address eigrp 100 172.168.0.0 255.255.252.0 à手工汇总
R2的配置
R2(config)# interface s0
R2(config-if)# ip ospf authentication message-digest à启用接口验证
R2(config-if)# ip ospf message-digest-key 1 md5 cisco
R3的配置
R3(config)# interface s1
R3(config-if)# ip ospf authentication message-digest à启用接口认证
R3(config-if)# ip ospf message-digest-key 1 md5 cisco
步骤四：在R2，R3上做路由再发布并控制loopback2不能被R1,R2学到
R2的配置
R2(config)# router eigrp 100
R2(config-router)# redistribute ospf 10 metric 10000 100 255 1 1500à将
ospf重分发进
eigrp
R2(config)# router ospf 10
R2(config-router)# redistribute eigrp 100 subnets à将
eigrp路由重分发到
ospf
R3的配置
R3(config)# access-list 1 permit 192.168.1.0 0.0.0 .255 à定义分发条件列表
R3(config)# access-list 1 permit 192.168.2.0 0.0.0 .255
R3(config)# access-list 2 permit 192.168.3.0 0.0.0 .255
R3(config)# route-map o-e permit 10 à做映射列表允许相应条目
R3 (config-route-map)# match ip address 1 à将列表加载
R3(config)# route-map o-e deny 20 à拒绝相应条目的映射列表
R3 (config-route-map)# match ip address 2 à将列表加载
R3(config)# route-map o-e permit 25 à最后允许其它所有
R3(config)# router ospf 10
R3(config-router)# redistribute connected subnets route-map o-e
步骤五：查看路由表
R1#sh 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
20.0.0 .0/24 is subnetted, 1 subnets
D EX 20.1.1 .0 [170/2195456] vi a 10.1.1 .2, 00:03:50, Serial0 à外部路由条目
172.168.0.0/16 is variably subnetted, 4 subnets, 2 masks
D 172.168.0.0/22 is a summary, 00:03:56, Null0
C 172.168.1.0/24 is directly connected, Loopback0
C 172.168.2.0/24 is directly connected, Loopback1
C 172.168.3.0/24 is directly connected, Loopback2
10.0.0 .0/24 is subnetted, 1 subnets
C 10.1.1 .0 is directly connected, Serial0
D EX 192.168.1.0/24 [170/2195456] vi a 10.1.1 .2, 00:01:53, Serial0
D EX 192.168.2.0/24 [170/2195456] vi a 10.1.1 .2, 00:01:53, Serial0
R2#sh 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
20.0.0 .0/24 is subnetted, 1 subnets
C 20.1.1 .0 is directly connected, Serial0
172.168.0.0/22 is subnetted, 1 subnets
D 172.168.0.0 [90/2297856] vi a 10.1.1 .1, 00:05:39, Serial1
10.0.0 .0/24 is subnetted, 1 subnets
C 10.1.1 .0 is directly connected, Serial1
O E2 192.168.1.0/24 [110/20] vi a 20.1.1 .2, 00:03:42, Serial0 à
ospf外部路由条目类型
2
O E2 192.168.2.0/24 [110/20] vi a 20.1.1 .2, 00:03:42, Serial0
R3#sh 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
20.0.0 .0/24 is subnetted, 1 subnets
C 20.1.1 .0 is directly connected, Serial1
172.168.0.0/22 is subnetted, 1 subnets
O E2 172.168.0.0 [110/20] vi a 20.1.1 .1, 00:04:48, Serial1
10.0.0 .0/24 is subnetted, 1 subnets
O E2 10.1.1 .0 [110/20] vi a 20.1.1 .1, 00:04:48, Serial1
C 192.168.1.0/24 is directly connected, Loopback0
C 192.168.2.0/24 is directly connected, Loopback1
C 192.168.3.0/24 is directly connected, Loopback2
步骤六：用ping命令测试连通性
R1#ping 192.168.2.1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 60/60/64 ms
R3#ping 172.168.1.1
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 60/60/60 ms
步骤七：查看配置
R1#sh run
hostname R1
!
interface Loopback0
ip address 172.168.1.1 255.255.255.0
!
interface Loopback1
ip address 172.168.2.1 255.255.255.0
!
interface Loopback2
ip address 172.168.3.1 255.255.255.0
!
interface Serial0
ip address 10.1.1 .1 255.255.255.0
ip summary-address eigrp 100 172.168.0.0 255.255.252.0 5
clockrate 64000
!
router eigrp 100
network 10.1.1 .0 0.0.0.255
network 172.168.1.0 0.0.0 .255
network 172.168.2.0 0.0.0 .255
network 172.168.3.0 0.0.0 .255
no auto-summary
!
end
R2#sh run
hostname R2
!
interface Serial0
ip address 20.1.1 .1 255.255.255.0
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 cisco
!
interface Serial1
ip address 10.1.1 .2 255.255.255.0
!
router eigrp 100
redistribute ospf 10 metric 10000 100 255 1 1500
network 10.1.1 .0 0.0.0.255
no auto-summary
!
router ospf 10
redistribute eigrp 100 subnets
network 20.1.1 .0 0.0.0.255 area 0
!
end
R3#sh run
hostname R3
!
interface Loopback0
ip address 192.168.1.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback1
ip address 192.168.2.1 255.255.255.0
ip ospf network point-to-point
!
interface Loopback2
ip address 192.168.3.1 255.255.255.0
ip ospf network point-to-point à定义网络类型，否则为主机路由
32位
!
interface Serial1
ip address 20.1.1 .2 255.255.255.0
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 cisco
clockrate 64000
!
router ospf 10
redistribute connected subnets route-map o-e
network 20.1.1 .0 0.0.0.255 area 0
!
access-list 1 permit 192.168.1.0 0.0.0 .255
access-list 1 permit 192.168.2.0 0.0.0 .255
access-list 2 permit 192.168.3.0 0.0.0 .255
route-map o-e permit 10
match ip address 1
!
route-map o-e deny 20
match ip address 2
!
route-map o-e permit 25
!
end