第四篇：EIGRP路由！
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第一步：基本IP通讯！
R1>en
R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#int s0/0
R1(config-if)#ip add 192.168.12.1 255.255.255.0
R1(config-if)#clock rate 64000
R1(config-if)#no sh
R1(config-if)#exit
R1(config)#int s0/1
R1(config-if)#ip add 192.168.13.1 255.255.255.0
R1(config-if)#clock rate 64000
R1(config-if)#no sh
R1(config-if)#exit
R1(config)#int lo 0
R1(config-if)#ip add 1.1.1.1 255.255.255.0
R1(config-if)#exit
R1(config)#
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R2>en
R2#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R2(config)#int s0/0
R2(config-if)#ip add 192.168.12.2 255.255.255.0
R2(config-if)#no sh
R2(config-if)#exit
R2(config)#int lo 0
R2(config-if)#ip add 2.2.2.2 255.255.255.0
R2(config-if)#exit
R2(config)#
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R3>en
R3#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R3(config)#int s0/1
R3(config-if)#ip add 192.168.13.3 255.255.255.0
R3(config-if)#no sh
R3(config-if)#exit
R3(config)#int lo 0
R3(config-if)#ip add 3.3.3.3 255.255.255.0
R3(config-if)#exit
R3(config)#
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第二步：EIGRP宣告路由！
R1(config)#router eigrp 10 -------10代表AS号，所有必须一致，否则学习不到路由信息的！
R1(config-router)#no au ----------关闭自动汇总
R1(config-router)#net 192.168.12.0
R1(config-router)#net 192.168.13.0
R1(config-router)#net 1.1.1.0
R1(config-router)#end
R1#
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R2(config)#router eigrp 10
R2(config-router)#no au
R2(config-router)#net 192.168.12.0
R2(config-router)#net 2.2.2.0
R2(config-router)#end
R2#
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R3(config)#router eigrp 10
R3(config-router)#net 192.168.13.0
R3(config-router)#net 3.3.3.0
R3(config-router)#end
R3#
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第三步：查看路由表！
R1#sh 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
C 192.168.12.0/24 is directly connected, Serial0/0
1.0.0.0/24 is subnetted, 1 subnets
C 1.1.1.0 is directly connected, Loopback0
C 192.168.13.0/24 is directly connected, Serial0/1
2.0.0.0/24 is subnetted, 1 subnets
D 2.2.2.0 [90/2297856] via 192.168.12.2, 00:03:51, Serial0/0
D 3.0.0.0/8 [90/2297856] via 192.168.13.3, 00:03:30, Serial0/1
R1#
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R2#sh 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
C 192.168.12.0/24 is directly connected, Serial0/0
1.0.0.0/24 is subnetted, 1 subnets
D 1.1.1.0 [90/2297856] via 192.168.12.1, 00:03:58, Serial0/0
D 192.168.13.0/24 [90/2681856] via 192.168.12.1, 00:03:58, Serial0/0
2.0.0.0/24 is subnetted, 1 subnets
C 2.2.2.0 is directly connected, Loopback0
D 3.0.0.0/8 [90/2809856] via 192.168.12.1, 00:03:35, Serial0/0
R2#
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R3#sh 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
D 192.168.12.0/24 [90/2681856] via 192.168.13.1, 00:03:42, Serial0/1
1.0.0.0/24 is subnetted, 1 subnets
D 1.1.1.0 [90/2297856] via 192.168.13.1, 00:03:42, Serial0/1
C 192.168.13.0/24 is directly connected, Serial0/1
2.0.0.0/24 is subnetted, 1 subnets
D 2.2.2.0 [90/2809856] via 192.168.13.1, 00:03:42, Serial0/1
3.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 3.3.3.0/24 is directly connected, Loopback0
D 3.0.0.0/8 is a summary, 00:03:39, Null0
R3#
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第四步：查看EIGRP邻居！
R1#sh ip eigrp neighbors
IP-EIGRP neighbors for process 10
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
1 192.168.13.3 Se0/1 13 00:05:20 100 600 0 3
0 192.168.12.2 Se0/0 11 00:05:42 55 330 0 4
R1#
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R2#sh ip eigrp neighbors
IP-EIGRP neighbors for process 10
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 192.168.12.1 Se0/0 12 00:05:31 56 336 0 5
R2#
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R3#sh ip eigrp neighbors
IP-EIGRP neighbors for process 10
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 192.168.13.1 Se0/1 12 00:05:03 460 2760 0 4
R3#
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第五步：ping测试！
R3#ping 1.1.1.1 source 3.3.3.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:
Packet sent with a source address of 3.3.3.3
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 24/37/48 ms
R3#
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R3#ping 2.2.2.2 source 3.3.3.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:
Packet sent with a source address of 3.3.3.3
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/28/56 ms
R3#
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好了，本教程也就此告一段落！我们的学习是一个循序渐进的过程！可能有的朋友会说这里面还有许多知识没涉及到啊！
我打算将在后面再为朋友们献上，等大家都有一定的基础的时候，那个时候学习起来会轻松多了！谢谢……
在这里祝大家：学习愉快！