1 / 40

Chapter 14

Chapter 14. Multicasting And Multicast Routing Protocols. www.btechebooks4u.blogspot.com. CONTENTS. INTRODUCTION MULTICAST ROUTING MULTICAST TREES MULTICAST ROUTING PROTOCOLS DVMRP MOSPF CBT PIM MBONE. www.btechebooks4u.blogspot.com. 14.1. INTRODUCTION.

ganit
Download Presentation

Chapter 14

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 14 Multicasting And Multicast Routing Protocols www.btechebooks4u.blogspot.com

  2. CONTENTS • INTRODUCTION • MULTICAST ROUTING • MULTICAST TREES • MULTICAST ROUTING PROTOCOLS • DVMRP • MOSPF • CBT • PIM • MBONE www.btechebooks4u.blogspot.com

  3. 14.1 INTRODUCTION www.btechebooks4u.blogspot.com

  4. Figure 14-1 Unicasting www.btechebooks4u.blogspot.com

  5. In unicast routing, the router forwards the received packet through only one of its interfaces. www.btechebooks4u.blogspot.com

  6. Figure 14-2 Multicasting www.btechebooks4u.blogspot.com

  7. In multicast routing, the router may forward the received packet through several of its interfaces. www.btechebooks4u.blogspot.com

  8. Figure 14-3:a Multicasting versus multiple unicasting www.btechebooks4u.blogspot.com

  9. Figure 14-3:b Multicasting versus multiple unicasting

  10. Emulation of multicasting through multiple unicasting is not efficient and may create long delays, particularly with a large group. www.btechebooks4u.blogspot.com

  11. 14.2 MULTICAST ROUTING

  12. 14.3 MULTICAST TREES www.btechebooks4u.blogspot.com

  13. In a source-based tree approach, the combination of source and group determines the tree. www.btechebooks4u.blogspot.com

  14. In the group-shared tree approach, the group determines the tree. www.btechebooks4u.blogspot.com

  15. 14.4 MULTICAST ROUTING PROTOCOLS

  16. Figure 14-4 Multicast routing protocols www.btechebooks4u.blogspot.com

  17. 14.5 DVMRP

  18. Figure 14-5 Reverse path forwarding www.btechebooks4u.blogspot.com

  19. In reverse path forwarding (RPF), the router forwards only the packets that have traveled the shortest path from the source to the router; all other copies are discarded.

  20. RPF prevents the formation of loops. www.btechebooks4u.blogspot.com

  21. Figure 14-6 Reverse path broadcasting www.btechebooks4u.blogspot.com

  22. Figure 14-7 RPF versus RPB www.btechebooks4u.blogspot.com

  23. RPB creates a shortest path broadcast tree from the source to each destination. It guarantees that each destination receives one and only one copy of the packet.

  24. Figure 14-8 RPF, RPB, and RPM www.btechebooks4u.blogspot.com

  25. RPM adds pruning and grafting to RPB to create a multicast shortest path tree that supports dynamic membership changes. www.btechebooks4u.blogspot.com

  26. 14.6 MOSPF

  27. Figure 14-9 Unicast tree and multicast tree www.btechebooks4u.blogspot.com

  28. 14.7 CBT www.btechebooks4u.blogspot.com

  29. Figure 14-10 Shared-group tree with rendezvous router www.btechebooks4u.blogspot.com

  30. Figure 14-11 Sending a multicast packet to the rendezvous router www.btechebooks4u.blogspot.com

  31. In CBT, the source sends the multicast packet (encapsulated in a unicast packet) to the core router. The core router decapsulates the packet and forwards it to all interested hosts. www.btechebooks4u.blogspot.com

  32. 14.8 PIM www.btechebooks4u.blogspot.com

  33. PIM-DM is used in a dense multicast environment, such as a LAN environment. www.btechebooks4u.blogspot.com

  34. PIM-DM uses RPF and pruning/grafting strategies to handle multicasting. However, it is independent from the underlying unicast protocol. www.btechebooks4u.blogspot.com

  35. PIM-SM is used in a sparse multicastenvironment such as a WAN.

  36. PIM-SM is similar to CBT but uses a simpler procedure. www.btechebooks4u.blogspot.com

  37. 14.9 MBONE www.btechebooks4u.blogspot.com

  38. Figure 14-12 Logical tunneling www.btechebooks4u.blogspot.com

  39. Figure 14-13 MBONE www.btechebooks4u.blogspot.com

  40. DVMRP supports MBONE www.btechebooks4u.blogspot.com

More Related