tailieunhanh - Lecture Routing Protocols and Concepts - Chapter 3: Introduction to Dynamic Routing Protocols

In this chapter, you learned to: Describe the role of dynamic routing protocols and place these protocols in the context of modern network design, identify several ways to classify routing protocols, describe how metrics are used by routing protocols and identify the metric types used by dynamic routing protocols,. | Introduction to Dynamic Routing Protocol Routing Protocols and Concepts – Chapter 3 Objectives Describe the role of dynamic routing protocols and place these protocols in the context of modern network design. Identify several ways to classify routing protocols. Describe how metrics are used by routing protocols and identify the metric types used by dynamic routing protocols. Determine the administrative distance of a route and describe its importance in the routing process. Identify the different elements of the routing table. Dynamic Routing Protocols Function(s) of Dynamic Routing Protocols: Dynamically share information between routers. Automatically update routing table when topology changes. Determine best path to a destination. Dynamic Routing Protocols The purpose of a dynamic routing protocol is to: Discover remote networks Maintaining up-to-date routing information Choosing the best path to destination networks Ability to find a new best path if the current path is no longer | Introduction to Dynamic Routing Protocol Routing Protocols and Concepts – Chapter 3 Objectives Describe the role of dynamic routing protocols and place these protocols in the context of modern network design. Identify several ways to classify routing protocols. Describe how metrics are used by routing protocols and identify the metric types used by dynamic routing protocols. Determine the administrative distance of a route and describe its importance in the routing process. Identify the different elements of the routing table. Dynamic Routing Protocols Function(s) of Dynamic Routing Protocols: Dynamically share information between routers. Automatically update routing table when topology changes. Determine best path to a destination. Dynamic Routing Protocols The purpose of a dynamic routing protocol is to: Discover remote networks Maintaining up-to-date routing information Choosing the best path to destination networks Ability to find a new best path if the current path is no longer available Dynamic Routing Protocols Components of a routing protocol Algorithm In the case of a routing protocol algorithms are used for facilitating routing information and best path determination Routing protocol messages These are messages for discovering neighbors and exchange of routing information Dynamic Routing Protocols Advantages of static routing It can backup multiple interfaces/networks on a router Easy to configure No extra resources are needed More secure Disadvantages of static routing Network changes require manual reconfiguration Does not scale well in large topologies Classifying Routing Protocols Dynamic routing protocols are grouped according to characteristics. Examples include: RIP IGRP EIGRP OSPF IS-IS BGP Autonomous System is a group of routers under the control of a single authority. Classifying Routing Protocols Types of routing protocols: Interior Gateway Protocols (IGP) Exterior Gateway Protocols (EGP) Classifying Routing Protocols Interior Gateway Routing

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