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DES-7200 Configuration Guide Chapter 8 DHCPv6 Client Configuration
8-1
8 DHCPv6 Client
Configuration
8.1 DHCPv6 Overview
Along with the development of IPv6 network, IPv6-based network is being applied
more and more widely. As the framework proposed at the beginning of IPv6 design,
the automatic configuration of network nodes has become a key feature of IPv6
network. In the new network framework, the concepts of stateless configuration and
stateful configuration were brought forward. Through stateless auto-configuration, the
new nodes in the network can complete all configurations via Route Advertisement;
while in stateful auto-configuration, the network nodes need interact with relevant
configuration server in the network in order to complete the configuration of network
address and other parameters. As the only stateful configuration model developed at
the present time, DHCPv6 is fully described in RFC3315.
Comparatively complete description on the application model of DHCPv6 has been
given in RFC3315 (Dynamic Host Configuration Protocol for IPv6). Similar to the
framework of sDHCPv4, the application model of DHCPv6 is composed of the DHCP
server, DHCP clients and DHCP relay. The configuration parameters can be obtained
through the interaction between DHCP clients and DHCP server, while the DHCP
relay can link the DHCP clients with the DHCP server outside the local link. The
message interaction and parameter maintenance basically follow the practices of
DHCPv4, but DHCPv6 do give proper consideration to the message structure and
process according to the new network.
In IPv6 network, the auto-configuration of network nodes can be divided into:
Stateless auto-configuration: Network nodes will acquire configuration parameters
from route advertisement.
Stateful auto-configuration: Network nodes will acquire configuration parameters from
the DHCPv6 server.