ospf协议通过lsa描述网络拓扑（The OSPF protocol describes network topology through LSA）.docVIP

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ospf协议通过lsa描述网络拓扑（The OSPF protocol describes network topology through LSA）.doc

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ospf协议通过lsa描述网络拓扑（The OSPF protocol describes network topology through LSA）

ospf协议通过lsa描述网络拓扑（The OSPF protocol describes network topology through LSA） The OSPF protocol described by LSA network topology Source: Internet time: 2008-05-22 Western Digital Virtual Host - the national top 10! More than 40 virtual host management function, the countrys leading! Double line virtual host and access to free enterprise smoothly! Post office,.CN domain name, website 480 yuan, a 7 day free trial, satisfied with the payment! VPS host hire 266 yuan / month (1G memory)! OSPF protocol algorithm The two courses of study we know the OSPF is a link state algorithm, before the introduction of link state algorithm, let us recall the DV algorithm, such as RIP, RIP protocol in routing computation first himself known routing to their neighbors, when the neighbor received routing compared with their then take a route, the optimal route is added to the routing table, and a point to your router routing. OSPF link state protocol adopts a new design idea, running in OSPF routers in the network to send the information includes not only the routing information, including status information and network topology of the link topology (can be understood as used in the network interface, each network interface status what kind of, and in the network interconnection situation). The OSPF protocol described by LSA network topology In the understanding of the OSPF protocol, the OSPF protocol is how to describe this information. First of all, the existing network in any form of network selection are nothing more than the following four: First, for the entire network segment only router running OSPF, other devices connected to the router interface are not running OSPF. Second: two run OSPF router through a point-to-point link connected (such as PPP/HDLC). Third: a router through multipoint link and multiple routers connected in the same network, and there is no relationship between the plurality of router interconnection. Fourth: a router through multipoint link and multiple route