Configuration Guide Configuring DHCPv6
iana-address prefix ipv6-prefix/prefix-length [ lifetime { valid-lifetime | preferred-lifetime } ]
ipv6-prefix/prefix-length: Indicates an IPv6 address prefix and the prefix length.
lifetime: Sets the valid time of the address allocated to a client. This keyword must be configured together
with valid-lifetime and preferred-lifetime.
valid-lifetime: Indicates the valid time of the address allocated to a client.
preferred-lifetime: Indicates the time when an address is preferentially allocated to a client.
Interface configuration mode
Run the iana-address prefix command to configure IA_NA address prefixes for a DHCPv6 server, some of
which are allocated to the client.
When receiving an IA_NA address request from a client, the DHCPv6 server selects an available address
according to the IA_NA address range and allocates the address to the client. When the client does not use
this address, the DHCPv6 server marks this address as available for another client.
Configuring Prefixes of Statically Bound Addresses on the DHCPv6 Server
prefix-delegation ipv6-prefix/prefix-length client-DUID [ lifetime ]
ipv6-prefix/prefix-length: Indicates an IPv6 address prefix and the prefix length.
client-DUID: Indicates the DUID of a client.
lifetime: Sets the time when the client can use this prefix.
DHCPv6 pool configuration mode
You can run the prefix-delegation command to manually configure a prefix list for an IA_PD of a client and
specify the valid time of these prefixes.
Use the client-DUID parameter to specify the client to which the address prefix is allocated. The address
prefix will be allocated to the first IA_PD of the client.
After receiving a request for the address prefix from the client, the DHCPv6 server checks whether a static
binding is available. If yes, the DHCPv6 server directly returns the static binding. If not, the DHCPv6 server
allocates the address prefix from another prefix source.
Configuring the DCHPv6 Server to Allocate Prefixes from a local prefix pool
prefix-delegation pool poolname [lifetime { valid-lifetime | preferred-lifetime } ]
poolname: Indicates the name of a user-defined local prefix pool.
lifetime: Sets the valid time of the prefix allocated to a client. This keyword must be configured together with
valid-lifetime and preferred-lifetime.
valid-lifetime: Indicates the valid time of the prefix allocated to the client.
preferred-lifetime: Indicates the time when a prefix is preferentially allocated to a client.
DHCPv6 pool configuration mode
Run the prefix-delegation pool command to configure a prefix pool for a DHCPv6 server to allocate
prefixes to clients. The ipv6 local pool command is used to configure a prefix pool.
When receiving a prefix request from a client, the DHCPv6 server selects an available prefix from the prefix
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