HPE 3100 Configuration Manual page 123

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Multicast address—An identifier for a set of interfaces (typically belonging to different nodes),
similar to an IPv4 multicast address. A packet sent to a multicast address is delivered to all
interfaces identified by that address.
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Anycast address—An identifier for a set of interfaces (typically belonging to different nodes). A
packet sent to an anycast address is delivered to the nearest one of the interfaces identified by
that address. The nearest interface is chosen according to the routing protocols' measure of
distance.
NOTE:
There are no broadcast addresses in IPv6. Their function is replaced by multicast addresses.
The type of an IPv6 address is designated by the first several bits, the format prefix.
mappings between address types and format prefixes.
Table 5 Mappings between address types and format prefixes
Type
Unicast
address
Multicast address
Anycast address
Unicast addresses
Unicast addresses comprise global unicast addresses, link-local unicast addresses, site-local
unicast addresses, the loopback address, and the unspecified address.
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Global unicast addresses, equivalent to public IPv4 addresses, are provided for network
service providers. This type of address allows efficient prefix aggregation to restrict the number
of global routing entries.
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Link-local addresses are used for communication among link-local nodes for neighbor
discovery and stateless autoconfiguration. Packets with link-local source or destination
addresses are not forwarded to other links.
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Site-local unicast addresses are similar to private IPv4 addresses. Packets with site-local
source or destination addresses are not forwarded out of the local site (or a private network).
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A loopback address is 0:0:0:0:0:0:0:1 (or ::1). It cannot be assigned to any physical interface
and can be used by a node to send an IPv6 packet to itself in the same way as the loopback
address in IPv4.
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An unspecified address is 0:0:0:0:0:0:0:0 (or ::). It cannot be assigned to any node. Before
acquiring a valid IPv6 address, a node fills this address in the source address field of IPv6
packets. The unspecified address cannot be used as a destination IPv6 address.
Multicast addresses
IPv6 multicast addresses listed in
Table 6 Reserved IPv6 multicast addresses
Address
FF01::1
Unspecified address
Loopback address
Link-local address
Site-local address
Global unicast address
Table 6
Application
Node-local scope all-nodes multicast address
Format prefix (binary)
00...0 (128 bits)
00...1 (128 bits)
1111111010
1111111011
Other forms
11111111
Anycast addresses use the unicast address space and have the
identical structure of unicast addresses.
are reserved for special purposes.
113
Table 5 lists the
IPv6 prefix ID
::/128
::1/128
FE80::/10
FEC0::/10
N/A
FF00::/8