Multicast Basics

IP range is –

Well known link local addresses assigned by IANA (reserved use of –;

  • – All Multicast systems on a subnet
  • – All routers n subnet
  • – All DVMRP routers
  • – All PIMv2 routers
  • – OSPF routers
  • – All OSPF DR’s
  • –  RIPv2 routers
  • – EIGRP

First Hop router – closest to source

Last Hop router – closest to reciever

Multicast Sources

  • Create a session or group and announce via session announcement
  • Originate multicast data and send it to a multicast group
  • Apply proper actions if feedback info is available
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