Motivation Address Space Address Notation Address Scope Address Types Unicast Addresses Anycast Addresses Multicast Addresses Resources About Me Compression ToolMulticast Addresses
A IPng multicast address is an identifier for group of interfaces.
The Multicast address format:
FD- 1111 1111 identifies the address as being a multicast address.
FLGS- 4 bits when the high-order flags bits are reserve, and must be
Initialized to 0.
T=0 indicates a permanently-assigned multicast address, assigned by the
Global internet numbering authority.
T=1 indicates a non -permanently-assigned multicast adress.
SCOP is a 4-bit multicast scope value used to limit the scope of the multicast
Group. The values are:
0- reserved
1- node-local scope
2- link-local scope
3- (unassigned)
4- (unassigned)
5- site-local scope
6- (unassigned)
7- (unassigned)
8- organization-local scope
9- (unassigned)
10- (unassigned)
11- (unassigned)
12- (unassigned)