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IPv6 Multicast

IPv6 Multicast. Mónica Domingues. Agenda. Introduction Address allocation IPv6 Multicast Multicast Listener Discovery Protocol Independent Multicast Rendezvous-Point Monitoring Conclusions. Introduction. Reduces traffic by simultaneosly delivering a stream

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IPv6 Multicast

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  1. IPv6 Multicast Mónica Domingues http://www.fccn.pt

  2. Agenda • Introduction • Address allocation • IPv6 Multicast • Multicast Listener Discovery • Protocol Independent Multicast • Rendezvous-Point • Monitoring • Conclusions http://www.fccn.pt

  3. Introduction • Reduces traffic by simultaneosly delivering a stream • Multicast traffic is sent to a single address but processed by multiple hosts. http://www.fccn.pt

  4. Address allocation • IPv6 multicast addresses have the Format Prefix (FF) • RFC 2373 http://www.fccn.pt

  5. IPv6 multicast Host • How does it work? • L2 Multicast • Deliver packets • MLD (Multicast Listener Discovery) • Host registration • Multicast Distribution Trees • Exchange routing information • PIM (Protocol-independent multicast) • Exchange routing information • BGMP (Border Gateway Multicast Protocol) • Forward between domains • RPF (Reverse path forwarding) • Forward multicast towards Source http://www.fccn.pt

  6. Multicast Listener Discovery • Host have to register in groups in order to receive traffic • MLD is used to dynamically register individual hosts in a multicast group http://www.fccn.pt

  7. Protocol Independent Multicast • Uses the unicast routing table to perform the reverse path forwarding: • RIP • OSPF • BGP • Any… • Types of PIM • Dense mode • Sparse mode • Source specific multicast • Bi-directional http://www.fccn.pt

  8. RendezVous-Point • Static • Manual configuration • Auto-RP • RP mapping agent • Bootstrap Router (BSR) • Candidate-RP per domain • Embedded RP • Multicast address includes encoded RP address • Interdomain and Intradomain solution http://www.fccn.pt

  9. Monitoring • Multicast beacon http://www.fccn.pt

  10. Applications • Video/audio conferencing • Broadcast TV • Video-on-demand • Radio Broadcast • Resource discovery/Service advertisement • Software update http://www.fccn.pt

  11. Conclusions • Way of sending same data to multiple receivers • Better bandwidth utilization • Lesser host/router processing • Receiver’s addresses unknown http://www.fccn.pt

  12. QUESTIONS http://www.fccn.pt

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