4000 Router Series Layer 3 - IP Services Configuration Guide

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Configuring the DHCPv6 server

Overview

A DHCPv6 server can assign IPv6 addresses or IPv6 prefixes to DHCPv6 clients.

IPv6 address assignment

As shown in Figure 81, the DHCPv6 server assigns IPv6 addresses, domain name suffixes, DNS server

addresses, and other configuration parameters to DHCPv6 clients.

The IPv6 addresses assigned to the clients include the following types:

• Temporary IPv6 addresses—Internally used and frequently changed without lease renewal.

• Non-temporary IPv6 addresses—Correctly used by DHCP clients.

Figure 81 IPv6 address assignment

IPv6 prefix assignment

As shown in Figure 82, the DHCPv6 server assigns an IPv6 prefix to the DHCPv6 client. The client

advertises the prefix information in an RA message so that hosts on the subnet can automatically

configure their IPv6 addresses by using the prefix.