Well-known multicast addresses

A lot of dynamic routing protocols uses ip multicast for neighbor discovery, hellos and other things.

Here are some well known multicast adresses:

  • 224.0.0.1 all hosts on a subnet
  • 224.0.0.2 all routers on a subnet
  • 224.0.0.4 Distance Vector Multicast Routing Protocols (DVMRP)
  • 224.0.0.5 OSPF routers
  • 224.0.0.6 OSPF designated routers
  • 224.0.0.9 RIP Version 2 routers
  • 224.0.0.10 EIGRP routers
  • 224.0.0.13 Protocol independent Multicast (PIM) routers

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