H3C Technologies H3C S5560 Series Switches - Manual (Page 185)

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Configuring the DHCPv6 server
Overview
A DHCPv6 server can assign IPv6 addresses, IPv6 prefixes, and other configuration parameters to
DHCPv6 clients.
NOTE:
The term "interface" in this section collectively refers to VLAN interfaces and Layer 3 Ethernet interfaces.
You can set an Ethernet port as a Layer 3 interface by using the port link-mode route command (see
Layer
2—LAN Switching Configuration Guide).
IPv6 address assignment
As shown in Figure 67 , 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—Frequently changed without lease renewal.
• Non-temporary IPv6 addresses—Correctly used by DHCP clients, with lease renewal.
Figure 67 IPv6 address assignment
IPv6 prefix assignment
As shown in Figure 68 , the DHCPv6 server assigns an IPv6 prefix to the DHCPv6 client. The client
advertises the prefix information in a multicast RA message so that hosts on the subnet can automatically
configure their IPv6 addresses by using the prefix.