TCP/IPv6 Configuration and Management Manual (G06.29+, H06.03+, J06.03+)

IPv6 Fundamentals

HP NonStop TCP/IPv6 Configuration and Management Manual—524523-012

A-2

Types of Addresses

In this case, x is a hexadecimal value of a 16-bit piece of the address (six high-order

pieces) and d is a decimal value of an 8-bit piece of address (four low-order pieces) in

standard, dotted-quad IPv4 form. For example, these are IPv6 addresses:

0:0:0:0:0:0:13.1.68.3

0:0:0:0:0:FFFF:129.144.52.38

When compressed, these addresses are:

::13.1.68.3

::FFFF:129.144.52.38

Like IPv4 address prefixes, IPv6 address prefixes are represented using the Classless

Inter-Domain Routing (CIDR) notation. This notation has this format:

ipv6-address/prefix-length

For example, you can represent the 60-bit hexadecimal prefix 12AB00000000CD3 in

any of these ways:

12AB:0000:0000:CD30:0000:0000:0000:0000/60

12AB::CD30:0:0:0:0/60

12AB:0:0:CD30::/60

Types of Addresses

NonStop TCP/IPv6 supports two types of IPv6 addresses:



Unicast



Multicast

Unicast Address

A unicast address is an identifier for a physical network interface. Packets sent to a

unicast address are delivered to the node containing the interface identified by the

address. Unicast addresses typically have the format shown in Figure A-1

page A-3:

Note. Unlike IPv4, IPv6 does not define a broadcast address. To get the function of a

broadcast address, use a multicast address with link-local scope.