Group Destination Address are broadcast address in class D domain. Multicast IP address are Class D IP address, from 224.0.0.0 to 239.255.255.255. They are also referred to as Group Destination Address (GDA). There is a mapping between IP address and MAC address for GDA. GDA MAC address is formed by 01:00:5E:XX:XX:XX, followed by the latest 24 bits of the GDA multicast IP address in hex.
Example: 220.15.15.15 --> Ethernet MAC of 01:00:5E:0F:0F:0F
For IPv6 Multicast addresses, the Ethernet MAC is derived by the four low-order octets OR'ed with the MAC 33:33:00:00:00:00.
Example: the IPv6 address FF02:DEAD:BEEF::1:3 --> Ethernet MAC of 33:33:00:01:00:03 (RFC 2464).
Famous quotes containing the words group, destination and/or address:
“Remember that the peer group is important to young adolescents, and there’s nothing wrong with that. Parents are often just as important, however. Don’t give up on the idea that you can make a difference.”
—The Lions Clubs International and the Quest Nation. The Surprising Years, I, ch.5 (1985)
“If we are always arriving and departing, it is also true that we are eternally anchored. One’s destination is never a place but rather a new way of looking at things.”
—Henry Miller (1891–1980)
“The English, the plain English, of the politest address of a gentleman to a lady is, “I am now, dear Madam, your humble servant: Pray be so good as to let me be your Lord and Master.””
—Samuel Richardson (1689–1761)