文档介绍：?所谓Routing就是一个数据包从一个地方到另一个地方这样一个过程在网络中路由器就是承担route功能的网络设备为了达到Route目的路由器必须知道以下关键因素DestinationAddressIdentifyingsourcesofinformationDiscoveringroutesSelectingroutesMaintainingroutinginformation路由器将路由信息存在路由表中路由器正是依靠路由表达到路由目的的在路由器可以通过showiproute查看路由表内容如AS116-SH#shiprouteCodes:C-connectedrS・static,I-IGRP,R・RIPrM・-BGPD・EIGRP,EX・EIGRPexternaL0・・OSPFinterareaN1OSPFNSSAexternaItype1rN2-OSPFNSSAexternaItype2E1-OSPFexternaltype1,E2-OSPFexternaltype2,E・EGPi・IS-ISrL1・IS-ISlevel-1rL2・IS・ISlevel-2,ia・IS-ISinterarea-candidatedefauItrU-per-userstaticroute,o-ODRP-[110/249],00:.,[110/1],00:00:.[110/20],00:00:17,Serial0/[110/20]:00:17,Serial0/[110/155],00:00:17,Serial0/ [110/99],00:00:17,Serial0/ [110/208],00:00:17,Serial0/ [110/50],00:00:17rSeria10/ [110/96],00:00:17rSeria10/ [110/51],00:00:17,Serial0/ [110/122],00:13:.[110/20],00:00:17,Serial0/[110/1]:00:17,