Multicast addresses

IP multicast addresses


[NOTE: ]

NOTE:

"Glop" is a mechanism for assigning multicast addresses between different ASs. By filling an AS number into the middle two bytes of 233.0.0.0, you get 255 multicast addresses for that AS. For more information, see RFC 2770.


Table 3: Common permanent multicast group addresses

Address

Description

224.0.0.1

All systems on this subnet, including hosts and routers.

224.0.0.2

All multicast routers on this subnet.

224.0.0.3

Unassigned.

224.0.0.4

DVMRP routers.

224.0.0.5

OSPF routers.

224.0.0.6

OSPF designated routers and backup designated routers.

224.0.0.7

Shared Tree (ST) routers.

224.0.0.8

ST hosts.

224.0.0.9

RIPv2 routers.

224.0.0.11

Mobile agents.

224.0.0.12

DHCP server/relay agent.

224.0.0.13

All Protocol Independent Multicast (PIM) routers.

224.0.0.14

RSVP encapsulation.

224.0.0.15

All Core-Based Tree (CBT) routers.

224.0.0.16

Designated SBM.

224.0.0.17

All SBMs.

224.0.0.18

VRRP.

Ethernet multicast MAC addresses