Eigrp管理距离.doc

管理距离如图：基本配置R1Routerenable Router#configure terminal Router(config)#hostname r1r1(config)#line console 0r1(config-line)#logging synchronous r1(config-line)#exec-timeout 0r1(config-line)#exitr1(config)#interface serial 1/2r1(config-if)#ip address 12.12.12.1 255.255.255.252r1(config-if)#no shutdown r1(config-if)#exitr1(config)#interface loopback 0r1(config-if)#ip address 1.1.1.1 255.255.255.0r1(config-if)#no shutdown r1(config-if)#exitr1(config)#exitR2Routerenable Router#configure terminal Router(config)#hostname r2r2(config)#line console 0r2(config-line)#logging synchronous r2(config-line)#exec-timeout 0r2(config-line)#exitr2(config)#interface serial 1/3r2(config-if)#ip address 12.12.12.2 255.255.255.252r2(config-if)#no shutdown r2(config-if)#exitr2(config)#interface serial 1/2r2(config-if)#ip address 12.12.12.5 255.255.255.252r2(config-if)#no shutdown r2(config-if)#exitr2(config)#int loopback 0r2(config-if)#ip address 2.2.2.2 255.255.255.0r2(config-if)#no shutdown r2(config-if)#exitr2(config)#exitR3Routerenable Router#configure terminal Router(config)#hostname r3r3(config)#line console 0r3(config-line)#logging synchronous r3(config-line)#exec-timeout 0r3(config-line)#exitr3(config)#interface serial 1/3r3(config-if)#ip address 12.12.12.6 255.255.255.252r3(config-if)#no shutdown r3(config-if)#exitr3(config)#interface loopback 0r3(config-if)#ip address 3.3.3.3 255.255.255.0r3(config-if)#no shutdown r3(config-if)#exitr3(config)#exit配置EigrpR1r1#configure terminal r1(config)#router eigrp 1r1(config-router)#network 12.12.12.1 0.0.0.3r1(config-router)#network 1.1.1.1 0.0.0.255r1(config-router)#no auto-summary r1(config-router)#exitr1(config)#exitR2r2#configure terminal r2(config)#router eigrp 1r2(config-router)#network 12.12.12.2 0.0.0.3r2(config-router)#network 12.12.12.5 0.0.0.3r2(config-router)#network 2.2.2.2 0.0.0.255r2(config-router)#no auto-summaryr2(config-router)#exitr2(config)#exitR3r3#configure terminal r3(config)#router eigrp 1r3(config-router)#network 12.12.12.6 255.255.255.252r3(config-router)#network 3.3.3.3 0.0.0.255r3(config-router)#no auto-summary r3(config-router)#exitr3(config-router)#exitr3(config)#exit显示路由表R1r1#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 routeGateway of last resort is not set 1.0.0.0/24 is subnetted, 1 subnetsC 1.1.1.0 is directly connected, Loopback0 2.0.0.0/24 is subnetted, 1 subnetsD 2.2.2.0 90/2297856 via 12.12.12.2, 00:00:13, Serial1/2 3.0.0.0/24 is subnetted, 1 subnetsD 3.3.3.0 90/2809856 via 12.12.12.2, 00:01:07, Serial1/2 12.0.0.0/30 is subnetted, 2 subnetsD 12.12.12.4 90/2681856 via 12.12.12.2, 00:02:44, Serial1/2C 12.12.12.0 is directly connected, Serial1/2R2r2#show ip routeCodes: 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 routeGateway of last resort is not set 1.0.0.0/24 is subnetted, 1 subnetsD 1.1.1.0 90/2297856 via 12.12.12.1, 00:03:31, Serial1/3 2.0.0.0/24 is subnetted, 1 subnetsC 2.2.2.0 is directly connected, Loopback0 3.0.0.0/24 is subnetted, 1 subnetsD 3.3.3.0 90/2297856 via 12.12.12.6, 00:01:19, Serial1/2 12.0.0.0/30 is subnetted, 2 subnetsC 12.12.12.4 is directly connected, Serial1/2C 12.12.12.0 is directly connected, Serial1/3R3r3#show ip routeCodes: 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 routeGateway of last resort is not set 1.0.0.0/24 is subnetted, 1 subnetsD 1.1.1.0 90/2809856 via 12.12.12.5, 00:01:55, Serial1/3 2.0.0.0/24 is subnetted, 1 subnetsD 2.2.2.0 90/2297856 via 12.12.12.5, 00:00:36, Serial1/3 3.0.0.0/24 is subnetted, 1 subnetsC 3.3.3.0 is directly connected, Loopback0 12.0.0.0/30 is subnetted, 2 subnetsC 12.12.12.4 is directly connected, Serial1/3D 12.12.12.0 90/2681856 via 12.12.12.5, 00:01:55, Serial1/3查看邻居关系R1r1#show ip eigrp neighbors IP-EIGRP neighbors for process 1H Address Interface Hold Uptime SRTT RTO Q Seq (sec) (ms) Cnt Num0 12.12.12.2 Se1/2 13 00:12:05 420 2520 0 23邻居12.12.12.2 13秒后HolddownR2r2#show ip eigrp neighbors IP-EIGRP neighbors for process 1H Address Interface Hold Uptime SRTT RTO Q Seq (sec) (ms) Cnt Num1 12.12.12.6 Se1/2 12 00:12:10 366 2196 0 130 12.12.12.1 Se1/3 10 00:13:57 385 2310 0 13邻居12.12.12.1 10秒后Holddown邻居12.12.12.6 12秒后HolddownR3r3#show ip eigrp neighbors IP-EIGRP neighbors for process 1H Address Interface Hold Uptime SRTT RTO Q Seq (sec) (ms) Cnt Num0 12.12.12.5 Se1/3 12 00:13:38 364 2184 0 24邻居12.12.12.5 12秒后Holddown修改R2的管理距离修改全局管理距离R2r2#configure terminal Enter configuration commands, one per line. End with CNTL/Z.r2(config)#router eigrp 1r2(config-router)#distanr2(config-router)#distance eigrp 89 169r2(config-router)#exitr2(config)#exit查看路由表R1r1#show ip routeCodes: 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 routeGateway of last resort is not set 1.0.0.0/24 is subnetted, 1 subnetsC 1.1.1.0 is directly connected, Loopback0 2.0.0.0/24 is subnetted, 1 subnetsD 2.2.2.0 90/2297856 via 12.12.12.2, 00:01:28, Serial1/2 3.0.0.0/24 is subnetted, 1 subnetsD 3.3.3.0 90/2809856 via 12.12.12.2, 00:01:28, Serial1/2 12.0.0.0/30 is subnetted, 2 subnetsD 12.12.12.4 90/2681856 via 12.12.12.2, 00:01:28, Serial1/2C 12.12.12.0 is directly connected, Serial1/2R2r2#show ip routeCodes: 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 routeGateway of last resort is not set 1.0.0.0/24 is subnetted, 1 subnetsD 1.1.1.0 89/2297856 via 12.12.12.1, 00:06:18, Serial1/3 2.0.0.0/24 is subnetted, 1 subnetsC 2.2.2.0 is directly connected, Loopback0 3.0.0.0/24 is subnetted, 1 subnetsD 3.3.3.0 89/2297856 via 12.12.12.6, 00:06:17, Serial1/2 12.0.0.0/30 is subnetted, 2 subnetsC 12.12.12.4 is directly connected, Serial1/2C 12.12.12.0 is directly connected, Serial1/3R3r3#show ip routeCodes: 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 routeGateway of last resort is not set 1.0.0.0/24 is subnetted, 1 subnetsD 1.1.1.0 90/2809856 via 12.12.12.5, 00:03:30, Serial1/3 2.0.0.0/24 is subnetted, 1 subnetsD 2.2.2.0 90/2297856 via 12.12.12.5, 00:03:30, Serial1/3 3.0.0.0/24 is subnetted, 1 subnetsC 3.3.3.0 is directly connected, Loopback0 12.0.0.0/30 is subnetted, 2 subnetsC 12.12.12.4 is directly connected, Serial1/3D 12.12.12.0 90/2681856 via 12.12.12.5, 00:03:30, Serial1/3R1和R3的没有变。R2的管理距离变成了89。（这里其实R2的域外管理距离也改变了。只是没有显示出来而已）修改单独的管理距离R2r2#configure terminal r2(config)#router eigrp 1r2(config-router)#distance 91 12.12.12.1 0.0.0.0r2(config-router)#exitr2(config)#exit查看路由表R2r2#show ip routeCodes: 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 - OSP