Cisco的路由表-思科课程-IP路由

Cisco的路由表 RouterA#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, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default, U - per-user static route, o – ODR, T - traffic engineered route Gateway of last resort is not set 172.16.0.0/24 is subnetted, 1 subnets C 172.16.1.0 is directly connected, Ethernet0 10.0.0.0/24 is subnetted, 2 subnets R 10.2.2.0 [120/1] via 10.1.1.2, 00:00:07, Serial2 C 10.1.1.0 is directly connected, Serial2 R 192.168.1.0/24 [120/2] via 10.1.1.2, 00:00:07, Serial2 Network Protocol Destination Network Connected Learned 10.120.2.0 172.16.1.0 Exit Interface E0 S0 路由器开始只知道与自己直连的网络，必须学习那些与自己非直连的目的网络 目的网络 管理距离AD（区分不同路由协议的可信度）和度量值metric（在同一路由协议内比较不同路由的代价） 下一跳IP地址 转发接口