该实验比较耗费精力，请做该实验前，准备好瓜子饮料！
一、实验拓扑
二、实验要求
1.全网EIGRP as =1 auto-summary开启
2.ospf 0,1,12 建立
3.R5，R6 eigrp 1 no auto-summary
4.所有网络PING通
三、实验步骤
步骤一：
基本配置（全网eigrp已配置）
R1：
R1#conf t
R1(config)#int e0/0
R1(config-if)#ip add 12.12.12.1 255.255.255.0
R1(config-if)#no shut
R1(config-if)#int e0/1
R1(config-if)#ip add 20.2.2.1 255.255.255.0
R1(config-if)#no shut
R1(config-if)#int lo0
R1(config-if)#ip add 1.1.1.1 255.255.255.0
R1(config-if)#end
R1(config)#router eigrp 1
R1(config-router)#eigrp router-id 1.1.1.1
R1(config-router)#net 1.1.1.1 0.0.0.0
R1(config-router)#net 20.2.2.1 0.0.0.0
R1(config-router)#net 12.12.12.1 0.0.0.0
R2：
R2#CONF T
R2(config)#int e0/0
R2(config-if)#ip add 12.12.12.2 255.255.255.0
R2(config-if)#no shut
R2(config-if)#int lo0
R2(config-if)#ip add 2.2.2.2 255.255.255.0
R2(config-if)#end
R2#conf t
R2(config)#router eigrp 1
R2(config-router)#eigrp rou
R2(config-router)#eigrp router-id 2.2.2.2
R2(config-router)#net 2.2.2.2 0.0.0.0
R2(config-router)#net 12.12.12.2 0.0.0.0
R2(config-router)#end
R3：
R3#CONF T
R3(config)#INT E0/0
R3(config-if)#IP ADD 10.1.1.3 255.255.255.0
R3(config-if)#no shut
R3(config-if)#int e0/1
R3(config-if)#ip add 20.2.2.3 255.255.255.0
R3(config-if)#no shut
R3(config-if)#int lo0
R3(config-if)#ip add 3.3.3.3 255.255.255.0
R3(config-if)#no shut
R3(config)#router eigrp 1
R3(config-router)network 3.3.3.3 0.0.0.0
R3(config-router)network 10.1.1.3 0.0.0.0
R3(config-router)network 20.2.2.3 0.0.0.0
R3(config-router)eigrp router-id 3.3.3.3
R4：
R4#CONF T
R4(config)#int e0/0
R4(config-if)#ip add 10.1.1.4 255.255.255.0
R4(config-if)#no shut
R4(config-if)#int e0/1
R4(config-if)#ip add 20.2.2.4 255.255.255.0
R4(config-if)#no shut
R4(config-if)#int lo0
R4(config-if)#ip add 4.4.4.4 255.255.255.0
R4(config-if)#end
R4#conf t
R4(config)#router eigrp 1
R4(config-router)#eigrp router-id 4.4.4.4
R4(config-router)#net 4.4.4.4 0.0.0.0
R4(config-router)#net 10.1.1.4 0.0.0.0
R4(config-router)#net 20.2.2.4 0.0.0.0
R5：
R5#conf t
R5(config)#int e0/0
R5(config-if)#ip add 10.1.1.5 255.255.255.0
R5(config-if)#no shut
R5(config-if)#int e0/1
R5(config-if)#ip add 56.56.56.5 255.255.255.0
R5(config-if)#no shut
R5(config-if)#int lo0
R5(config-if)#ip add 5.5.5.5 255.255.255.0
R5(config-if)#end
R5#conf t
R5(config)#router eigrp 1
R5(config-router)#eigrp router-id 5.5.5.5
R5(config-router)#net 10.1.1.5 0.0.0.0
R5(config-router)#net 56.56.56.5 0.0.0.0
R5(config-router)#net 5.5.5.5 0.0.0.0
R5(config-router)#end
R6：
R6#conf t
R6(config)#int e0/1
R6(config-if)#ip add 56.56.56.6 255.255.255.0
R6(config-if)#no shut
R6(config-if)#int lo0
R6(config-if)#ip add 6.6.6.6 255.255.255.0
R6(config-if)#end
R6#conf t
R6(config)#router eigrp 1
R6(config-router)#eigrp router-id 6.6.6.6
R6(config-router)#net 6.6.6.6 0.0.0.0
R6(config-router)#net 56.56.56.6 0.0.0.0
R6(config-router)#end
检验：
R6#show ip route eigrp
D 1.0.0.0/8 [90/460800] via 56.56.56.5, 00:40:23, Ethernet0/1
D 2.0.0.0/8 [90/486400] via 56.56.56.5, 00:40:23, Ethernet0/1
D 3.0.0.0/8 [90/435200] via 56.56.56.5, 00:40:23, Ethernet0/1
D 4.0.0.0/8 [90/435200] via 56.56.56.5, 00:40:23, Ethernet0/1
D 20.0.0.0/8 [90/332800] via 56.56.56.5, 00:40:23, Ethernet0/1
D 5.0.0.0/8 [90/409600] via 56.56.56.5, 00:40:23, Ethernet0/1
6.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
D 6.0.0.0/8 is a summary, 00:40:26, Null0
D 10.0.0.0/8 [90/307200] via 56.56.56.5, 00:40:23, Ethernet0/1
56.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
D 56.0.0.0/8 is a summary, 00:40:25, Null0
D 12.0.0.0/8 [90/358400] via 56.56.56.5, 00:40:23, Ethernet0/1
Ping 2.2.2.2 so 6.6.6.6 通！
步骤二：
建立OSPF
R2：
R2#conf t
R2(config)#router ospf 1
R2(config-router)#router-id 2.2.2.2
R2(config-router)#net 2.2.2.2 0.0.0.0 area 12
R2(config-router)#net 12.12.12.0 0.0.0.255 area 12
R2(config-router)#int lo0
R2(config-if)#ip ospf network point-to-point
R1：
R1#conf t
R1(config)#router ospf 1
R1(config-router)#router-id 1.1.1.1
R1(config-router)#net 1.1.1.1 0.0.0.0 a 1
R1(config-router)#net 20.2.2.0 0.0.0.255 a 1
R1(config-router)#net 12.12.12.0 0.0.0.255 a 12
R1(config-router)#int lo0
R1(config-if)#ip ospf net point-to-point
R3：
R3#conf t
R3(config)#router ospf 1
R3(config-router)#router-id 3.3.3.3
R3(config-router)#net 3.3.3.3 0.0.0.0 a 0
R3(config-router)#net 10.1.1.0 0.0.0.255 a 0
R3(config-router)#net 20.2.2.0 0.0.0.255 a 1
R3(config)#int lo0
R3(config-if)#ip ospf net point-to-point
R4：
R4#conf t
R4(config)#router ospf 1
R4(config-router)#router-id 4.4.4.4
R4(config-router)#net 4.4.4.4 0.0.0.0 a 0
R4(config-router)#net 10.1.1.0 0.0.0.255 a 0
R4(config-router)#net 20.2.2.0 0.0.0.255 a 1
R4(config-router)#int lo0
R4(config-if)#ip ospf net point-to-point
R5：
R5#CONF T
R5(config)#router ospf 1
R5(config-router)#router-id 5.5.5.5
R5(config-router)#net 10.1.1.0 0.0.0.255 a 0
R5(config-router)#net 5.5.5.5 0.0.0.0 a 0
R5(config-router)#exit
R5(config)#int lo0
R5(config-if)#ip ospf net point
R5(config-if)#ip ospf net point-to-point
步骤三：
建立虚电路
R1
R1(config)#router ospf 1
R1(config-router)#area 1 virtual-link 3.3.3.3
R1(config-router)#area 1 virtual-link 4.4.4.4
R4：
R4(config)#router ospf 1
R4(config-router)#area 1 virtual-link 1.1.1.1
R3：
R3(config)#router ospf 1
R3(config-router)#area 1 virtual-link 1.1.1.1
检验：
R2#show ip route ospf
1.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 1.1.1.0/24 [110/11] via 12.12.12.1, 00:05:19, Ethernet0/0
3.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 3.3.3.0/24 [110/21] via 12.12.12.1, 00:03:41, Ethernet0/0
4.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 4.4.4.0/24 [110/21] via 12.12.12.1, 00:03:45, Ethernet0/0
20.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 20.2.2.0/24 [110/20] via 12.12.12.1, 00:05:19, Ethernet0/0
5.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 5.5.5.0/24 [110/31] via 12.12.12.1, 00:03:45, Ethernet0/0
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 10.1.1.0/24 [110/30] via 12.12.12.1, 00:03:45, Ethernet0/0
R5#show ip route ospf
1.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 1.1.1.0/24 [110/21] via 10.1.1.4, 00:05:17, Ethernet0/0
[110/21] via 10.1.1.3, 00:05:17, Ethernet0/0
2.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 2.2.2.0/24 [110/31] via 10.1.1.4, 00:05:17, Ethernet0/0
[110/31] via 10.1.1.3, 00:05:17, Ethernet0/0
3.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O 3.3.3.0/24 [110/11] via 10.1.1.3, 00:05:17, Ethernet0/0
4.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O 4.4.4.0/24 [110/11] via 10.1.1.4, 00:05:17, Ethernet0/0
20.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 20.2.2.0/24 [110/20] via 10.1.1.4, 00:05:17, Ethernet0/0
[110/20] via 10.1.1.3, 00:05:17, Ethernet0/0
12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 12.12.12.0/24 [110/30] via 10.1.1.4, 00:05:17, Ethernet0/0
[110/30] via 10.1.1.3, 00:05:17, Ethernet0/0
步骤四：
改大eigrp的管理距离
R2：
R2(config)#access-list 40 permit any
R2(config)#router eigrp 1
R2(config-router)#distance 111 12.12.12.1 0.0.0.0 40
R1：
R1(config)#access-list 40 permit any
R1(config)#router eigrp 1
R1(config-router)#distance 111 12.12.12.2 0.0.0.0 40
R1(config-router)#distance 111 12.12.12.2 0.0.0.0 40
R3：
R3(config)#access-list 40 permit any
R3(config)#router eigrp 1
R3(config-router)#distance 111 10.1.1.3 0.0.0.0 40
R3(config-router)#distance 111 10.1.1.5 0.0.0.0 40
R3(config-router)#distance 111 10.1.1.3 0.0.0.0 40
R3(config-router)#distance 111 10.1.1.5 0.0.0.0 40
R4：
R4(config)#access-list 40 permit any
R4(config)#router eigrp 1
R4(config-router)#distance 111 20.2.2.1 0.0.0.0 40
R4(config-router)#distance 111 20.2.2.3 0.0.0.0 40
R4(config-router)#distance 111 10.1.1.3 0.0.0.0 40
R4(config-router)#distance 111 10.1.1.5 0.0.0.0 40
R5：
R5(config)#access-list 40 permit any
R5(config)#router eigrp 1
R5(config-router)#distance 111 10.1.1.3 0.0.0.0 40
R5(config-router)#distance 111 10.1.1.4 0.0.0.0 40
步骤五：
重分发
R5(config)#router ospf 1
R5(config-router)#redistribute eigrp 1 subnets metric 30
R5(config)#router eigrp 1
R5(config-router)#redistribute ospf 1 metric 10000 100 255 1 1500
检验：
Ping 6.6.6.6 so 2.2.2.2
Ping 2.2.2.2 so 6.6.6.6
R6#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
1.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
D EX 1.1.1.0/24 [170/307200] via 56.56.56.5, 00:01:20, Ethernet0/1
D 1.0.0.0/8 [90/460800] via 56.56.56.5, 00:01:20, Ethernet0/1
2.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
D EX 2.2.2.0/24 [170/307200] via 56.56.56.5, 00:01:20, Ethernet0/1
D 2.0.0.0/8 [90/486400] via 56.56.56.5, 00:00:00, Ethernet0/1
3.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
D EX 3.3.3.0/24 [170/307200] via 56.56.56.5, 00:01:20, Ethernet0/1
D 3.0.0.0/8 [90/435200] via 56.56.56.5, 00:01:22, Ethernet0/1
4.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
D EX 4.4.4.0/24 [170/307200] via 56.56.56.5, 00:01:22, Ethernet0/1
D 4.0.0.0/8 [90/435200] via 56.56.56.5, 00:01:22, Ethernet0/1
20.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
D EX 20.2.2.0/24 [170/307200] via 56.56.56.5, 00:01:37, Ethernet0/1
D 20.0.0.0/8 [90/332800] via 56.56.56.5, 00:01:37, Ethernet0/1
D 5.0.0.0/8 [90/409600] via 56.56.56.5, 00:01:37, Ethernet0/1
6.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 6.6.6.0/24 is directly connected, Loopback0
D 6.0.0.0/8 is a summary, 00:01:18, Null0
D 10.0.0.0/8 [90/307200] via 56.56.56.5, 00:01:37, Ethernet0/1
56.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 56.56.56.0/24 is directly connected, Ethernet0/1
D 56.0.0.0/8 is a summary, 00:01:18, Null0
12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
D EX 12.12.12.0/24 [170/307200] via 56.56.56.5, 00:01:37, Ethernet0/1
D 12.0.0.0/8 [90/358400] via 56.56.56.5, 00:01:37, Ethernet0/1
R2#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
1.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 1.1.1.0/24 [110/11] via 12.12.12.1, 01:20:53, Ethernet0/0
O E2 1.0.0.0/8 [110/30] via 12.12.12.1, 00:14:04, Ethernet0/0
2.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 2.2.2.0/24 is directly connected, Loopback0
D 2.0.0.0/8 is a summary, 04:26:35, Null0
3.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 3.3.3.0/24 [110/21] via 12.12.12.1, 01:19:15, Ethernet0/0
O E2 3.0.0.0/8 [110/30] via 12.12.12.1, 00:14:06, Ethernet0/0
4.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 4.4.4.0/24 [110/21] via 12.12.12.1, 01:19:22, Ethernet0/0
O E2 4.0.0.0/8 [110/30] via 12.12.12.1, 00:14:06, Ethernet0/0
20.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 20.2.2.0/24 [110/20] via 12.12.12.1, 01:20:57, Ethernet0/0
O E2 20.0.0.0/8 [110/30] via 12.12.12.1, 00:14:08, Ethernet0/0
5.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 5.5.5.0/24 [110/31] via 12.12.12.1, 01:19:24, Ethernet0/0
O E2 5.0.0.0/8 [110/30] via 12.12.12.1, 00:05:24, Ethernet0/0
O E2 6.0.0.0/8 [110/30] via 12.12.12.1, 00:02:29, Ethernet0/0
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O IA 10.1.1.0/24 [110/30] via 12.12.12.1, 01:19:24, Ethernet0/0
O E2 10.0.0.0/8 [110/30] via 12.12.12.1, 00:14:08, Ethernet0/0
56.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
O E2 56.56.56.0/24 [110/30] via 12.12.12.1, 00:03:52, Ethernet0/0
O E2 56.0.0.0/8 [110/30] via 12.12.12.1, 00:03:51, Ethernet0/0
12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 12.12.12.0/24 is directly connected, Ethernet0/0
D 12.0.0.0/8 is a summary, 04:26:39, Null0
步骤六：
取消ospf内的eigrp路由协议
R1~R4：no router eigrp 1
步骤七：
取消自动汇总
R5(config)#router eigrp 1
R5(config-router)#no auto
R5(config-router)#no auto-summary
R6(config)#router eigrp 1
R6(config-router)#no auto
R6(config-router)#no auto-summary
步骤八：
ospf内流量分行
R5→R3→R1 备份：R5→R4→R1
R1→R4→R5备份： R5→R3→R1