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IPMS Overview Configuring IP Multicast Switching
page 26-4 OmniSwitch 6600 Family Network Configuration Guide April 2006
Reserved Multicast Addresses
The Internet Assigned Numbers Authority (IANA) created the range for multicast addresses, which is
224.0.0.0 to 239.255.255.255. However, as the table below shows, certain addresses are reserved and
cannot be used.
IPMS and Link Aggregation
When configuring IPMS and link aggregation on the same switch the following conditions should be kept
in mind:
• When a port moves to a link aggregation group all IPMS configurations on the port will be lost.
• When the last port in a link aggregation group moves out of the group all IPMS configuration on the
link aggregation group will be lost.
Address or Address Range Description
224.0.0.0 through 224.0.0.255 Routing protocols (e.g., OSPF, RIP2)
224.0.1.0 through 224.0.1.255 Internetwork Control Block (e.g., RSVP, DHCP, commer-
cial servers)
224.0.2.0 through 224.0.255.0 AD-HOC Block (e.g., commercial servers)
224.1.0.0 through 224.1.255.255 ST Multicast Groups
224.2.0.0 through 224.2.255.255 SDP/SAP Block
224.252.000.000 through 224.255.255.255 DIS Transient Groups
225.000.000.000 through 231.255.255.255 Reserved
232.000.000.000 through 232.255.255.255 Source Specific Multicast
233.000.000.000 through 233.255.255.255 GLOP Block
234.000.000.000 through 238.255.255.255 Reserved
239.000.000.000 through 239.255.255.255 Administratively Scoped