Multicast Basics

Mar 21, 2011

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

Rob Edwards

Northern (UK) chap focusing on platforms, automation, cloud and cloud native applications. Recovering network engineer, although it turns out networking is as important, if not more, now than before!