Dhcpv6 Overview; Concepts; Multicast Addresses Used By Dhcpv6; Duid - HP 10500 Series Configuration Manual

DHCPv6 overview

IMPORTANT:
The device cannot act as a DHCPv6 server.
The Dynamic Host Configuration Protocol for IPv6 (DHCPv6) provides a framework to assign IPv6
prefixes, IPv6 addresses, and other configuration parameters to hosts.
Compared with other IPv6 address allocation methods (such as manual configuration and stateless
address autoconfiguration), DHCPv6 can:
Record addresses assigned to hosts and assign specific addresses to hosts, facilitating network
•
management.
Assign prefixes to devices, facilitating automatic configuration and management of the entire
•
network.
Assign other configuration parameters, such as DNS server addresses and domain names.
•

Concepts

Multicast addresses used by DHCPv6

DHCPv6 uses the multicast address FF05::1:3 to identify all DHCPv6 servers on the site-local scope, and
uses the multicast address FF02::1:2 to identify all DHCPv6 servers and relay agents on the link-local
scope.

DUID

A DHCP unique identifier (DUID) uniquely identifies a DHCPv6 device (DHCPv6 client, server, or relay
agent). A DHCPv6 device adds its DUID in a sent packet.
The DUID falls into many types. The device supports only the DUID based on link-layer address (DUID-LL)
defined in RFC 3315.
Figure 50 shows the DUID-LL format, where:
DUID type—The device supports the DUID type of DUID-LL with the value of 0x0003.
•
Hardware type—The device supports the hardware type of Ethernet with the value of 0x0001.
•
Link layer address—Takes the value of the bridge MAC address of the device.
•
134