配置OSPF-CCNA中文版PPT下载

配置OSPF Open 标准 最短路径优先(SPF Shortest Path First) 算法 链路状态路由协议(vs. 距离矢量) * Purpose: The figure introduces the IGRP routing protocol. IGRP is a sophisticated distance vector routing protocol. Emphasize: The Interior Gateway Routing Protocol (IGRP) is a dynamic distance-vector routing protocol designed by Cisco in the mid-1980s for routing in an autonomous system that contains large, arbitrarily complex networks with diverse bandwidth and delay characteristics. Historically, IGRP became one of the success factors for the early Cisco IOS software capabilities because of its superiority to RIP version 1. The important IGRP characteristics are as follows: More scalability than RIP Fast response to network changes Sophisticated metric Multiple-path support