CS402: Computer Communications and Networks

5.3: Routing in IP Networks

• Université Catholique de Louvain: Olivier Bonaventure's "Computer Networking: Principles, Protocols, and Practice" URL

  Read the introduction to section 5.3, "Routing in IP Networks," on page 170. Stop at section 5.3.1, "Intradomain Routing," which you will read below. Routing protocols will be discussed in terms of two classifications: intradomain and interdomain. What are the differences between these classifications?

• 5.3.1: Intradomain Routing

  • Université Catholique de Louvain: Olivier Bonaventure's "Computer Networking: Principles, Protocols, and Practice" URL

    Read the introduction to section 5.3, "Routing in IP Networks," on page 170. Stop at section 5.3.1, "Intradomain Routing," which you will read below. Routing protocols will be discussed in terms of two classifications: intradomain and interdomain. What are the differences between these classifications?

  • 5.3.1.1: Routing Information Protocol (RIP)

    • Université Catholique de Louvain: Olivier Bonaventure's "Computer Networking: Principles, Protocols, and Practice" URL

      Read "RIP" on pages 171-172. Stop at "OSPF," which you will read below. As you read, consider the following questions: What is RIP? What are the features of the RIP protocol? How does RIP meet the objectives of intradomain routing? What are its weaknesses?

  • 5.3.1.2: Open Shortest Path First (OSPF)

    • Université Catholique de Louvain: Olivier Bonaventure's "Computer Networking: Principles, Protocols, and Practice" URL

      Read "OSPF" on pages 172-175. Stop at section 5.3.2 "Interdomain routing," which you will read below. As you read, consider the following questions: What is OSPF? What are the features of the OSPF protocol? How does OSPF meet the objectives of intradomain routing? What are its weaknesses? How is OSPF different from RIP?

• 5.3.2: Interdomain Routing

  • Université Catholique de Louvain: Olivier Bonaventure's "Computer Networking: Principles, Protocols, and Practice" URL

    Read section 5.3.2, "Interdomain Routing," on pages 175-194. As you read, consider the following questions: What are the objectives of interdomain routing? What is the difference between transit and stub domains? What are some of the relationships you can expect to find in an interdomain routing policy?

    Describe the BGP. How does BGP differ from the intradomain protocols RIP and OSPF that you've studied? What messages might the BGP generate? What is router convergence? Why is router convergence necessary? How is router convergence handled by the BGP?