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1、实验：被动接口实验：被动接口环境如图：环境如图：R1R2S1/2:12.12.12.1/24S1/3:12.12.12.2/24Loopback0:1.1.1.1Loopback0:2.2.2.2实验目的：实验目的：1 看看设置了被动接口，Eigrp 功能失效基本配置：基本配置：R1Routeren Router#configure terminal Router(config)#hostname r1 r1(config)#line console 0 r1(config-line)#logging synchronous r1(config-line)#exec-timeout 0 r1(
2、config-line)#exit r1(config)#interface serial 1/2 r1(config-if)#ip address 12.12.12.1 255.255.255.0 r1(config-if)#no shutdown r1(config-if)#exit r1(config)#interface loopback 0 r1(config-if)#ip address 1.1.1.1 255.255.255.0 r1(config-if)#no shutdown r1(config-if)#exit r1(config)#exitr1#wrR2Routerena
3、ble Router#configure terminal Router(config)#hostname r2 r2(config)#line console 0 r2(config-line)#logging synchronous r2(config-line)#exec-timeout 0 r2(config-line)#exit r2(config)#interface serial 1/3 r2(config-if)#ip address 12.12.12.2 255.255.255.0 r2(config-if)#no shutdown r2(config-if)#exit r2
4、(config)#interface loopback 0 r2(config-if)#ip address 2.2.2.2 255.255.255.0 r2(config-if)#no shutdown r2(config-if)#exit r2(config)#exit r2#wr配置配置 EIGRP 动态路由协议动态路由协议R1r1#configure terminal r1(config)#router eigrp 1 r1(config-router)#network 1.1.1.1 0.0.0.255 r1(config-router)#network 12.12.12.1 0.0
5、.0.155 r1(config-router)#no auto-summary r1(config-router)#exit r1(config)#exitR2r2#configure terminal r2(config)#router eigrp 1 r2(config-router)#network 2.2.2.2 0.0.0.255 r2(config-router)#network 12.12.12.2 0.0.0.255 r2(config-router)#no auto-summary r2(config-router)#exit r2(config)#exit显示路由表显示路
6、由表R1r1#show ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGPD - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - 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-I
7、S 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 not set1.0.0.0/24 is subnetted, 1 subnets C 1.1.1.0 is directly connected, Loopback0 D 2.0.0.0/8 90/2297856 via 12.12.12.2, 00:00
8、:55, Serial1/212.0.0.0/30 is subnetted, 1 subnets C 12.12.12.0 is directly connected, Serial1/2R2r2#show ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGPD - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type
9、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 not set1.0.0.0/24 is subnetted, 1 su
10、bnets D 1.1.1.0 90/2297856 via 12.12.12.1, 00:00:12, Serial1/32.0.0.0/8 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, 00:00:13, Null012.0.0.0/8 is variably subnetted, 2 subnets, 2 masks C 12.12.12.0/30 is directly connected, Serial1
11、/3 D 12.0.0.0/8 is a summary, 00:00:13, Null0在在 R1 上做被动接口上做被动接口R1r1#configure terminal r1(config)#router eigrp 1 r1(config-router)#passive-interface serial 1/2 r1(config-router)#exit r1(config)#exit查看结果查看结果R1r1#show ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGPD - EIGRP, EX
12、 - EIGRP external, O - OSPF, IA - OSPF inter area N1 - 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 r
13、outeo - ODR, P - periodic downloaded static routeGateway of last resort is not set1.0.0.0/24 is subnetted, 1 subnets C 1.1.1.0 is directly connected, Loopback012.0.0.0/30 is subnetted, 1 subnets C 12.12.12.0 is directly connected, Serial1/2R2r2#show ip route Codes: C - connected, S - static, R - RIP
14、, M - mobile, B - BGPD - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - 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, * - candid
15、ate default, U - per-user static routeo - ODR, P - periodic downloaded static routeGateway of last resort is not set2.0.0.0/8 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, 00:05:23, Null012.0.0.0/8 is variably subnetted, 2 subnets, 2 masks C 12.12.12.0/30 is directly connected, Serial1/3 D 12.0.0.0/8 is a summary, 00:05:23, Null0因为 R1 的 Serial1/2 接口设置成了被动接口，无法正常收发 Eigrp 数据包。因此 Eigrp 的邻 居关系也就断了，无法正常更新动态路由表了。
