OSPF综合实验一、实验拓扑图，如图1.1所示：图1.1 ospf综合实验拓扑图二、实验要求：1.要求全网互通2.R1、R5之间链路断开后，全网仍能互通3.R2永远为DR4.区域34为NSSA区域5.在区域0中仅出现2.2.0.0/22 的汇总路由6.除R3之外，所有路由仅有3.3.0.0/22的路由7.区域0中所有接口及虚链路做密文认证，认证密钥为cisco8.在R5上产生默认路由三、实验配置：1.预配置://R1上的预配置R1(config)#int lo 0R1(config-if)#ip add 1.1.1.1 255.255.255.0R1(config-if)#int s3/0R1(config-if)#ip add 123.0.0.1 255.255.255.0R1(config-if)#no shR1(config-if)#int s2/2R1(config-if)#ip add 15.0.0.1 255.255.255.0R1(config-if)#no sh//R2上的预配置R2(config)#int lo 0R2(config-if)#ip add 2.2.0.2 255.255.255.0 R2(config-if)#int lo 1R2(config-if)#ip add 2.2.1.2 255.255.255.0 R2(config-if)#int lo 2R2(config-if)#ip add 2.2.2.2 255.255.255.0 R2(config-if)#int lo 3R2(config-if)#ip add 2.2.3.2 255.255.255.0 R2(config-if)#int s3/0R2(config-if)#ip add 123.0.0.2 255.255.255.0 R2(config-if)#no shR2(config-if)#int f0/0R2(config-if)#ip add 25.0.0.2 255.255.255.0 R2(config-if)#no sh//R3上的预配置R3(config)#int lo 0R3(config-if)#ip add 3.3.0.3 255.255.255.0 R3(config-if)#int lo 1R3(config-if)#ip add 3.3.1.3 255.255.255.0 R3(config-if)#int lo 2R3(config-if)#ip add 3.3.2.3 255.255.255.0 R3(config-if)#int lo 3R3(config-if)#ip add 3.3.3.3 255.255.255.0 R3(config-if)#int s3/0R3(config-if)#ip add 123.0.0.3 255.255.255.0 R3(config-if)#no shR3(config-if)#int s2/2R3(config-if)#ip add 34.0.0.3 255.255.255.0 R3(config-if)#no sh//R4上的预配置R4(config)#int lo 0R4(config-if)#ip add 4.4.4.4 255.255.255.0 R4(config-if)#int f0/0R4(config-if)#ip add 25.0.0.4 255.255.255.0 R4(config-if)#no shR4(config-if)#int s2/1R4(config-if)#ip add 34.0.0.4 255.255.255.0 R4(config-if)#no sh//R5上的预配置R5(config)#int lo 0R5(config-if)#ip add 5.5.5.5 255.255.255.0 R5(config-if)#int lo 1R5(config-if)#ip add 10.0.0.1 255.255.255.0R5(config-if)#int f0/0R5(config-if)#ip add 25.0.0.5 255.255.255.0R5(config-if)#no shR5(config-if)#int s2/1R5(config-if)#ip add 15.0.0.5 255.255.255.0R5(config-if)#no sh2.各路由器的上的具体配置：//R1上的具体配置R1(config)#interface Loopback0R1(config-if)# ip ospf authentication message-digest //启用链路MD5认证R1(config-if)# ip ospf message-digest-key 1 md5 cisco //配置key ID及密匙R1(config-if)#interface Serial2/2R1(config-if)# ip ospf authentication message-digestR1(config-if)# ip ospf message-digest-key 1 md5 ciscoR1(config-if)#interface Serial3/0R1(config-if)# encapsulation frame-relay //帧中继封装R1(config-if)# frame-relay map ip 123.0.0.2 102 broadcast //帧中继类型配置为广播R1(config-if)# no arp frame-relay //关闭ARPR1(config-if)# no frame-relay inverse-arp//关闭inverse-arpR1(config-if)# ip ospf network broadcast //配置OSPF网络位broadcastR1(config-if)# ip ospf priority 0 //S3/0的DR/BDR的选举权R1(config-if)#router ospf 1R1(config-router)# router-id 1.1.1.1R1(config-router)# area 123 range 2.2.0.0 255.255.252.0//配置虚链路且开启md5认证R1(config-router)#$irtual-link 2.2.2.2 message-digest-key 1 md5 ciscoR1(config-router)# network 1.1.1.1 0.0.0.0 area 0R1(config-router)# network 15.0.0.1 0.0.0.0 area 0R1(config-router)# network 123.0.0.1 0.0.0.0 area 123//R2上的具体配置R2(config-if)#interface Serial3/0R2(config-if)# encapsulation frame-relayR2(config-if)# ip ospf network broadcastR2(config-if)# ip ospf priority 10R2(config-if)# no arp frame-relayR2(config-if)# frame-relay map ip 123.0.0.1 201 broadcastR2(config-if)# frame-relay map ip 123.0.0.3 203 broadcastR2(config-if)# no frame-relay inverse-arpR2(config-if)#router ospf 1R2(config-router)# router-id 2.2.2.2R2(config-router)#$rtual-link 5.5.5.5 message-digest-key 1 md5 ciscoR2(config-router)# area 123 range 2.2.0.0 255.255.252.0//手动汇总R2(config-router)#$irtual-link 1.1.1.1 message-digest-key 1 md5 ciscoR2(config-router)# network 2.2.0.0 0.0.255.255 area 123R2(config-router)# network 25.0.0.2 0.0.0.0 area 25R2(config-router)# network 123.0.0.2 0.0.0.0 area 123//R3上的具体配置R3(config)#interface Serial3/0R3(config-if)# encapsulation frame-relayR3(config-if)# ip ospf network broadcastR3(config-if)# ip ospf priority 0R3(config-if)# no arp frame-relayR3(config-if)# frame-relay map ip 123.0.0.2 302 broadcastR3(config-if)# no frame-relay inverse-arpR3(config-if)#router eigrp 1R3(config-router)# network 3.3.0.0 0.0.255.255R3(config-router)# no auto-summaryR3(config-router)#router ospf 1R3(config-router)# router-id 3.3.3.3R3(config-router)# area 34 nssaR3(config-router)# summary-address 3.3.0.0 255.255.252.0//域间汇总R3(config-router)# redistribute eigrp 1 subnets //重分布eigrp路由进ospf R3(config-router)# network 34.0.0.3 0.0.0.0 area 34R3(config-router)# network 123.0.0.3 0.0.0.0 area 123//R4上的具体配置R4(config-router)#router rip//开启rip进程R4(config-router)# version 2R4(config-router)# network 4.0.0.0R4(config-if)#router ospf 1R4(config-router)# router-id 4.4.4.4R4(config-router)#$rtual-link 5.5.5.5 message-digest-key 1 md5 ciscoR4(config-router)# area 34 nssaR4(config-router)# redistribute rip subnets//重分布rip进ospfR4(config-router)# network 25.0.0.4 0.0.0.0 area 25R4(config-router)# network 34.0.0.4 0.0.0.0 area 34//R5上的具体配置R5(config)#interface Loopback0R5(config-if)# ip ospf authentication message-digestR5(config-if)# ip ospf message-digest-key 1 md5 ciscoR5(config-if)#interface Serial2/1R5(config-if)# ip ospf authentication message-digestR5(config-if)# ip ospf message-digest-key 1 md5 ciscoR5(config-if)#router ospf 1R5(config-router)# router-id 5.5.5.5R5(config-router)#$rtual-link 4.4.4.4 message-digest-key 1 md5 ciscoR5(config-router)#$rtual-link 2.2.2.2 message-digest-key 1 md5 ciscoR5(config-router)# network 5.5.5.5 0.0.0.0 area 0R5(config-router)# network 15.0.0.5 0.0.0.0 area 0R5(config-router)# network 25.0.0.5 0.0.0.0 area 25R5(config-router)# default-information originate always //产生默认路由四、实验调试：1.查看R1上的路由表R1(config-line)#do sh ip routCodes: C - connected, S - static, R - RIP, M - mobile, B - BGPD - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter areaN1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2E1 - OSPF external type 1, E2 - OSPF external type 2i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2ia - IS-IS inter area, * - candidate default, U - per-user static routeo - ODR, P - periodic downloaded static routeGateway of last resort is 15.0.0.5 to network 0.0.0.034.0.0.0/24 is subnetted, 1 subnetsO IA 34.0.0.0 [110/129] via 15.0.0.5, 00:40:45, Serial2/21.0.0.0/24 is subnetted, 1 subnetsC 1.1.1.0 is directly connected, Loopback02.0.0.0/8 is variably subnetted, 5 subnets, 2 masksO 2.2.2.2/32 [110/65] via 123.0.0.2, 00:40:45, Serial3/0O 2.2.0.0/22 is a summary, 00:40:45, Null0O 2.2.3.2/32 [110/65] via 123.0.0.2, 00:40:45, Serial3/0O 2.2.0.2/32 [110/65] via 123.0.0.2, 00:40:45, Serial3/0O 2.2.1.2/32 [110/65] via 123.0.0.2, 00:40:45, Serial3/03.0.0.0/22 is subnetted, 1 subnetsO E2 3.3.0.0 [110/20] via 123.0.0.3, 00:40:45, Serial3/04.0.0.0/24 is subnetted, 1 subnetsO E2 4.4.4.0 [110/20] via 15.0.0.5, 00:40:46, Serial2/25.0.0.0/32 is subnetted, 1 subnetsO 5.5.5.5 [110/65] via 15.0.0.5, 00:40:46, Serial2/225.0.0.0/24 is subnetted, 1 subnetsO IA 25.0.0.0 [110/65] via 123.0.0.2, 00:40:46, Serial3/0[110/65] via 15.0.0.5, 00:40:46, Serial2/2123.0.0.0/24 is subnetted, 1 subnetsC 123.0.0.0 is directly connected, Serial3/015.0.0.0/24 is subnetted, 1 subnetsC 15.0.0.0 is directly connected, Serial2/2O*E2 0.0.0.0/0 [110/1] via 15.0.0.5, 00:40:46, Serial2/2以上输出表明，R1上已经可以全网访问，收敛已完成。