Information Technology Reference
In-Depth Information
Reserved Multicast Addresses
Table 10-8
Multicast Address
Description
224.0.0.1
All hosts or all systems on this subnet
224.0.0.2
All multicast routers
224.0.0.4
DVMRP routers
224.0.0.5
All OSPF routers
224.0.0.6
All OSPF DR routers
224.0.0.9
RIPv2 routers
224.0.0.10
EIGRP routers
224.0.0.13
All PIM routers
224.0.0.39
RP-Announce
224.0.0.40
RP-Discovery
Multicast Protocols
Table 10-9
Protocol
Description
IGMP
Internet Group Management Protocol—IP hosts use to report their multicast group
memberships to routers
CGMP
Cisco Group Management Protocol—Switches use to prune ports that do not have
multicast members
PIM-SM
Protocol Independent Multicast-Sparse Mode—Uses an RP to determine how to
distribute multicast streams
PIM-DM
Protocol Independent Multicast-Dense Mode—Sends packets out all interfaces
DVMRP
Distance Vector Multicast Routing Protocol —Multicast protocol that MBONE uses
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