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Giao thức định tuyến - Chapter 10

Distance vector routing protocols are like road signs because routers must make preferred path decisions based on a distance or metric to a network. – Link-state routing protocols are more like a road map because they create a topological map of the network and each router uses this map to determine the shortest path to each network. – The ultimate objective is that every router receives all of the link-state information about all other routers in the routing area. | I11111111 CISCO Link-State Routing Protocols Routing Protocols and Concepts - Chapter 10 ITE PC v4.0 Chapter 1 2007 Cisco Systems Inc. All rights reserved. Cisco Public 1 Objectives Describe the basic features concepts of link-state routing protocols. - Distance vector routing protocols are like road signs because routers must make preferred path decisions based on a distance or metric to a network. - Link-state routing protocols are more like a road map because they create a topological map of the network and each router uses this map to determine the shortest path to each network. - The ultimate objective is that every router receives all of the link-state information about all other routers in the routing area. With this link-state information each router can create its own topological map of the network and independently calculate the shortest path to every network. List the benefits and requirements of link-state routing protocols. ITE PC v4.0 Chapter 1 2007 Cisco Systems Inc. All rights reserved. Cisco Public 2 Link-State Routing Link state routing protocols -Also known as shortest path first algorithms -These protocols built around Dijkstra s SPF Classification of Routing Protocols Interior Gateway Exterior Gateway Protocols Protocols Distance Vector Routing Link State Routing Protocols Path Vector Protocols Classfill RIP IGRP EGP Classless RIPv2 EIGRP OSPFv2 IS-IS BGPv4 IPv6 RIPng EIGRP for IPv6 SPFv3 IS-IS for IPv6 0GPv4 for IPv6 OSPF will be discussed in Chapter 11 and IS-IS will be discussed in CCNP. ITE PC v4.0 Chapter 1 2007 Cisco Systems Inc. All rights reserved. Cisco Public