Iaid; Binding; Dhcpv6 Address/Prefix Assignment; Rapid Assignment Involving Two Messages - HP 10500 Series Configuration Manual

Figure 50 DUID-LL format
IA
Identified by an IAID, an Identity Association (IA) provides a construct through which the obtained
addresses, prefixes, and other configuration parameters assigned from a server to a client are managed.
A client can have more than one IA assigned to it, for example, one for each of its interfaces, to manage
the addresses, prefixes, and other configuration parameters obtained by the interfaces.

IAID

An IAID uniquely identifies an IA. It is chosen by the client and must be unique among the IAIDs on the
client.

Binding

The DHCPv6 server uses bindings to record the configuration information assigned to DHCPv6 clients,
including the IPv6 address/prefix, client DUID, IAID, valid lifetime, preferred lifetime, and lease
expiration time.
PD
The DHCPv6 server creates a Prefix Delegation (PD) for each assigned prefix to record the IPv6 prefix,
client DUID, IAID, valid lifetime, preferred lifetime, and lease expiration time.

DHCPv6 address/prefix assignment

A process of DHCPv6 address/prefix assignment involves two or four messages. The following sections
describe the detailed processes.

Rapid assignment involving two messages

As shown in
The DHCPv6 client sends out a Solicit message that contains a Rapid Commit option, requesting
1.
that rapid assignment of address/prefix and other configuration parameters should be preferred.
If the DHCPv6 server supports rapid assignment, it responds with a Reply message containing the
2.
assigned IPv6 address/prefix and other configuration parameters. If the DHCPv6 server does not
support rapid assignment,
Figure 51, the rapid assignment involving two messages operates as follows:
Assignment involving four messages
135
is implemented.