DES-3326S Layer 3 Fast Ethernet Switch User’s Guide
Switch Management and Operating Concepts 111
Internet Assigned Numbers Authority (IANA) for special
purposes. For example, the block of multicast addresses
ranging from 224.0.0.1 to 224.0.0.225 is reserved for use by
routing protocols and some other low-level topology discovery
and maintenance protocols.
Figure 5-14. Class D Multicast Address
Some of the reserved IP multicast addresses are as follows:
Address Assignment
224.0.0.0
Base Address (reserved)
224.0.0.1
All Systems on this subnet
224.0.0.2
All Routers on this subnet
224.0.0.3
Unassigned
224.0.0.4
DVMRP Routers
224.0.0.5
OSPF IGP Routers
224.0.0.6
OSPF IGP Designated Routers
224.0.0.7
ST Routers
224.0.0.8
ST Hosts
224.0.0.9
All RIP2 Routers
224.0.0.10
All IGRP Routers
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