Chapter 11:

Outline of Chapter 11: Routing

 Understand the Basics of Routing
      Summarize the purposes and attributes of routing protocols.
                Network addressing (path & ports) & best path selection (network discovery)
      Explain how path determination is a function of the network layer.
      Explain how routers route packets from source to destination.
      Explain that both networks and individual hosts on a network must have addresses.
      Explain best path selection and packet switching as the two basic processes of a router.
      Compare and contrast routed versus routing protocol.
      Explain how a packet undergoes multiple encapsulations and
          de-encapsulations, up to the network layer, as it traverses a network of routers.
      Explain multiprotocol routing.
 Understand Why Routing Protocols are Necessary
      Compare and contrast static versus dynamic routes.
      Explain one example why a static route would be used.
      Explain one example of how a default route is used.
      Explain why dynamic routing is necessary.
      Explain what information is important in dynamic routing.
      Explain how distances on network paths are determined by various metrics.
      Describe three classes of routing protocols.
      Explain the concept of time to convergence.
 Understand the Basics of Distance-Vector Routing
      Explain the concept of distance-vector routing.
      Explain how distance-vector protocols exchange routing tables.
      Explain how topology changes propagate through the network of
    routers.
      Explain the problem of routing loops.
      Explain the problem of counting to infinity.
      Explain the solution of defining a maximum.
      Explain the solution of split horizon.
      Explain the solution of hold-down timers.
 Understand the Basics of Link-State Routing
      Explain the concept of link-state routing.
      Explain how link-state protocols exchange routing tables.
      Explain how topology changes propagate through the network of routers.
      Describe two link-state concerns.
      Explain a situation where link-state advertisements (LSAs) are
          unsynchronized leading to inconsistent path decisions amongst routers.
 Understand the Context of Different Routing Protocols
      Compare and contrast distance-vector and link-state routing protocols.
      Describe hybrid routing protocols.
      Describe LAN-to-LAN routing.
      Describe LAN-to-WAN routing.
      Describe routers as intelligent layer 3 networking devices which perform
           best path selection and switching of multiple protocols and media.
  Goto chapter 9 10 11 12 13 next chapter