思科路由怎么配置EIGRP

2016-12-02

思科制造的路由器设备、交换机和其他设备承载了全世界80%的互联网通信,成为硅谷中新经济的传奇,那么你知道思科路由怎么配置EIGRP吗?下面是小编整理的一些关于思科路由怎么配置EIGRP的相关资料,供你参考。

思科路由配置EIGRP的方法:

拓扑图

接口连接:

Router1 S0/0 <----> Router2 S0/0

Router2 S0/1 <----> Router3 S0/0

Router1 S0/1 <----> Router4 S0/0

Router3 S0/1 <----> Router4 S0/1

VPCS V0/1 <----> Router1 E1/0

VPCS V0/2 <----> Router3 E1/0

实验原理:

在R1R2R3R4上均运行EIGRP路由协议。R4通过S0/1向R3通告一条0.0.0.0 0.0.0.0的汇总路由,并将这条浮动路由的管理距离设置为250,于是在网络连通的情况下R3上到达200.1.1.0/24网段的路由经过R2,而在R2与R3链路故障的时候,通过R3前往200.1.1.0/24的数据包会通过R4(R3拓扑表中,默认路由由A变为P)

关键配置:

R1:

interface Serial0/0

ip address 192.168.1.1 255.255.255.0

serial restart-delay 0

!

interface Serial0/1

ip address 192.168.3.1 255.255.255.0

serial restart-delay 0

!

interface Ethernet1/0

ip address 200.1.1.254 255.255.255.0

half-duplex

!

router eigrp 100

network 192.168.1.0

network 192.168.3.0

network 200.1.1.0

no auto-summary

R2、R3略,参照R1进行接口IP和路由协议的配置

重点看下R4的配置

R4:

interface Serial0/0

ip address 192.168.3.2 255.255.255.0

serial restart-delay 0

!

interface Serial0/1

ip address 192.168.4.1 255.255.255.0

ip summary-address eigrp 100 0.0.0.0 0.0.0.0 250(向R3通过默认路由,管理距离高于EIGRP默认值)!

router eigrp 100

network 192.168.3.0

network 192.168.4.0

auto-summary

查看结果:

1.R2和R3之间链路正常时

a) R3的路由表:

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, 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 192.168.4.1 to network 0.0.0.0

D 200.1.1.0/24 [90/2707456] via 192.168.2.1, 00:00:02, Serial0/0

C 200.1.2.0/24 is directly connected, Ethernet1/0

C 192.168.4.0/24 is directly connected, Serial0/1

D 192.168.1.0/24 [90/2681856] via 192.168.2.1, 00:00:02, Serial0/0

C 192.168.2.0/24 is directly connected, Serial0/0

D 192.168.3.0/24 [90/3193856] via 192.168.2.1, 00:00:02, Serial0/0

D* 0.0.0.0/0 [90/2681856] via 192.168.4.1, 00:00:00, Serial0/1

b)R3的拓扑表:

R3#sh ip eigrp topology

IP-EIGRP Topology Table for AS(100)/ID(200.1.2.254)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,

r - reply Status, s - sia Status

A 0.0.0.0/0, 1 successors, FD is Inaccessible

1 replies, active 00:00:00, query-origin: Successor Origin

Remaining replies:

via 192.168.2.1, r, Serial0/0

P 192.168.1.0/24, 1 successors, FD is 2681856

via 192.168.2.1 (2681856/2169856), Serial0/0

P 192.168.2.0/24, 1 successors, FD is 2169856

via Connected, Serial0/0

P 192.168.3.0/24, 1 successors, FD is 3193856

via 192.168.2.1 (3193856/2681856), Serial0/0

P 192.168.4.0/24, 1 successors, FD is 2169856

via Connected, Serial0/1

P 200.1.1.0/24, 1 successors, FD is 2707456

via 192.168.2.1 (2707456/2195456), Serial0/0

P 200.1.2.0/24, 1 successors, FD is 281600

via Connected, Ethernet1/0

2.R2的S0/1设置为DOWN,观察R3路由表和拓扑表

a)R3路由表:

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, 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 192.168.4.1 to network 0.0.0.0

C 200.1.2.0/24 is directly connected, Ethernet1/0

C 192.168.4.0/24 is directly connected, Serial0/1

C 192.168.2.0/24 is directly connected, Serial0/0

D* 0.0.0.0/0 [90/2681856] via 192.168.4.1, 00:00:05, Serial0/1

b)R3的拓扑表:

R3#sh ip eigrp topology

IP-EIGRP Topology Table for AS(100)/ID(200.1.2.254)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,

r - reply Status, s - sia Status

P 0.0.0.0/0, 1 successors, FD is 2681856

via 192.168.4.1 (2681856/2169856), Serial0/1

P 192.168.4.0/24, 1 successors, FD is 2169856

via Connected, Serial0/1

P 200.1.2.0/24, 1 successors, FD is 281600

via Connected, Ethernet1/0

该实验说明,当R2和R3链路正常是,通过R3去往PC1的数据包不通过R4,只有当R2、R3间链路出现故障,默认路由才启用。

更多相关阅读

最新发布的文章