tailieunhanh - Giao thức định tuyến - Chapter 4

Identify the characteristics of distance vector routing p y g protocols. Describe the network discovery process of distance vector routing protocols using Routing Information Protocol (RIP). Describe the processes to maintain accurate routing tables used by distance vector routing protocols. | I11111111 CISCO Routing Protocols and Concepts - Chapter 4 ITE PC Chapter 1 2007 Cisco Systems Inc. All rights reserved. Cisco Public 1 Objectives Identify the characteristics of distance vector routing protocols. Describe the network discovery process of distance vector routing protocols using Routing Information Protocol RIP . Describe the processes to maintain accurate routing tables used by distance vector routing protocols. Identify the conditions leading to a routing loop and explain the implications for router performance. Recognize that distance vector routing protocols are in use today Interior Calewoy Protocols Exterior Gateway Prcloccls Distance Vector Rou ng Link State Routing I .1 Path Vector Protocols Protocols Glassful Classless IPv6 RIP RIPvZ IGRP EGP EIGRP OSPFV2 IS-IS BGPv4 RlPng EIGRPfor IPv6 OSPFv3 ISMS for IPv6 BGPv4 for IPv6 Highlighted rouhng protocols are lhe focus of this course. ITE PC . Chapter 1 2007 Cisco Systems Inc. All rights reserved. Cisco Public 2 Distance Vector Routing Protocols Dynamic routing protocols help thenetwork administrator overcome the timeconsuming and exacting process of configuring and maintaining static routes. Examples of Distance Vector routing protocols Routing Information Protocol RIP -RFC 1058. -Hop count is used as the metric for path selection. -If the hop count for a network is greater than 15 RIP cannot supply a route to that network. -Routing updates are broadcast or multicast every 30 seconds by default. Interior Gateway Routing Protocol IGRP -proprietary protocol developed by Cisco. -Bandwidth delay load and reliability are used to create a composite metric. -Routing updates are broadcast every 90 seconds by default. -IGRP is the predecessor of EIGRP and is now obsolete. Enhanced Interior Gateway Routing Protocol EIGRP -Cisco proprietary distance vector routing protocol. -It can perform unequal cost load balancing. -It uses Diffusing Update Algorithm DUAL to calculate the shortest path. .