F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Configuration Guide-6PW100

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851BIPv6 prefix assignment
As shown in 2892HFigure 371, 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.
Figure 371 IPv6 prefix assignment
852BDHCPv6 address pool
The DHCP server selects IPv6 addresses, IPv6 prefixes, DNS server addresses, and other parameters
from an address pool and assigns them to the DHCP clients.
1698BAddress allocation mechanisms
DHCPv6 supports the following address allocation mechanisms:
• Static address allocation—To implement static address allocation for a client, create a DHCPv6
address pool, and manually bind the DUID and IAID of the client to an IPv6 address in the DHCPv6
address pool. When the client requests an IPv6 address, the DHCPv6 server assigns the IPv6
address in the static binding to the client.
• Dynamic address allocation—To implement dynamic address allocation for clients, create a
DHCPv6 address pool, specify a subnet for the pool, and divide the subnet into temporary and
non-temporary IPv6 address ranges. Upon receiving a DHCP request, the DHCPv6 server selects an
IPv6 address from the temporary or non-temporary IPv6 address range based on the address type
specified in the client request.
1699BPrefix allocation mechanisms
DHCPv6 supports the following prefix allocation mechanisms:
• Static prefix allocation—To implement static prefix allocation for a client, create a DHCPv6 address
pool, and manually bind the DUID and IAID of the client to an IPv6 prefix in the DHCPv6 address
pool. When the client requests an IPv6 prefix, the DHCPv6 server assigns the IPv6 prefix in the static
binding to the client.
• Dynamic prefix allocation—To implement dynamic prefix allocation for clients, create a DHCPv6
address pool and a prefix pool, specify a subnet for the address pool, and apply the prefix pool to
the address pool. Upon receiving a DHCP request, the DHCPv6 server dynamically selects an IPv6
prefix from the prefix pool in the address pool.