Configuring DHCPv6 Server and Relay Settings 126539Configuring DHCPv6 Server andRelay SettingsThis chapter describes how to configure the switch to dynamically assignnetwork information to IPv6 hosts by using the Dynamic Host ConfigurationProtocol for IPv6 (DHCPv6).The topics covered in this chapter include:• DHCPv6 Overview• Default DHCPv6 Server and Relay Values• Configuring the DHCPv6 Server and Relay (Web)• Configuring the DHCPv6 Server and Relay (CLI)• DHCPv6 Configuration ExamplesDHCPv6 OverviewDHCP is a protocol that is generally used between clients and servers for thepurpose of assigning IP addresses, gateways, and other networking definitionssuch as Domain Name System (DNS) and Network Time Protocol (NTP)parameters. However, IPv6 natively provides IP address auto configurationthrough IPv6 Neighbor Discovery Protocol (NDP) and through the use ofRouter Advertisement messages. Thus, the role of DHCPv6 within thenetwork is different than that of DHCPv4 because DHCPv6 is not theprimary source for IP address assignment.DHCPv6 server and client interactions are described by RFC 3315 [6]. Thereare many similarities between DHCPv6 and DHCPv4 interactions andoptions, but there are enough differences in the messages and optiondefinitions that there is no DHCPv4 to DHCPv6 migration orinteroperability.
