D-Link DES-3326 User Manual page 120

24-port NWay Ethernet Switch User's Guide
addresses ranging from 224.0.0.1 to 224.0.0.255 is reserved for
use by routing protocols and some other low-level topology
discovery or maintenance protocols.
239.0.0.0 to 239.255.255.355
administrative applications and not Internet-wide applications.
There are some other Class D addresses already reserved for
well-known groups such as "all routers on this subnet", "all
DVMRP routers". The format of Class D IP addresses is shown
below:
Figure 5-16. Class D Multicast Address
It should be noted that because of the mapping procedure there
will be 32 different multicast address mapped to the same IEEE-
802 address.
Some permanently assigned IP multicast addresses:
Address
224.0.0.0 Base Address (reserved)
All Systems on this subnet
224.0.0.1
224.0.0.2 All Routers on this subnet
Unassigned
224.0.0.3
224.0.0.4 DVMRP Routers
OSPF IGP Routers
224.0.0.5
104
Addresses ranging from
are reserved
Meaning
Switch Management and Operating Concepts
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