Multicasting
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Within IPv4 it is historically known as a class D address, a type of IP address. It ranges from 224.0.0.0 to 239.255.255.255, or, equivalently, 224.0.0.0/4. The 224.0.0.0 to 224.0.0.255 range is assigned for multicasting on the local LAN only. Well known examples are RIPv2 which uses 224.0.0.9 and OSPF which uses the 224.0.0.5 address. IP multicast address
Description
224.0.0.0
Base address (reserved)
224.0.0.1
The All Hosts multicast group that contains all systems on the same network segment
224.0.0.2
The All Routers multicast group that contains all routers on the same network segment
224.0.0.5
The Open Shortest Path First (OSPF) All SPF Routers address. Used to send Hello packets to all OSPF routers on a network segment
224.0.0.6
The OSPF All the Routers address. Used to send OSPF routing information to OSPF designated routers on a network segment
224.0.0.9
The RIP Version 2 group addresses. Used to send RIP routing information to all RIP v2 routers on a network segment
224.0.0.10
EIGRP group address. Used to send EIGRP routing information to all EIGRP routers on a network segment
224.0.0.18
Virtual Router Redundancy Protocol
224.0.0.22
IGMP (Internet Group Management Protocol)
224.0.0.102
Hot Standby Router Protocol Version 2
224.0.1.41
H.323 Gatekeeper discovery address
Description
224.0.0.0
Base address (reserved)
224.0.0.1
The All Hosts multicast group that contains all systems on the same network segment
224.0.0.2
The All Routers multicast group that contains all routers on the same network segment
224.0.0.5
The Open Shortest Path First (OSPF) All SPF Routers address. Used to send Hello packets to all OSPF routers on a network segment
224.0.0.6
The OSPF All the Routers address. Used to send OSPF routing information to OSPF designated routers on a network segment
224.0.0.9
The RIP Version 2 group addresses. Used to send RIP routing information to all RIP v2 routers on a network segment
224.0.0.10
EIGRP group address. Used to send EIGRP routing information to all EIGRP routers on a network segment
224.0.0.18
Virtual Router Redundancy Protocol
224.0.0.22
IGMP (Internet Group Management Protocol)
224.0.0.102
Hot Standby Router Protocol Version 2
224.0.1.41
H.323 Gatekeeper discovery address
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