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By default, desired address/prefix assignment and rapid assignment are disabled, and the
default preference is 0.
{ Apply a DHCPv6 address pool to the interface.
ipv6 dhcp server apply pool
pool-name [ allow-hint | preference
preference-value | rapid-commit ] *
Configuring a DHCPv6 policy for IPv6 address
and prefix assignment
About DHCPv6 policy for IPv6 address and prefix assignment
In a DHCPv6 policy, each DHCPv6 user class has a bound DHCPv6 address pool. Clients matching
different user classes obtain IPv6 addresses, IPv6 prefixes, and other parameters from different
address pools. When receiving a DHCPv6 request, the DHCPv6 server compares the packet against
the user classes in the order that they are configured.
If a match is found and the bound address pool has assignable IPv6 addresses or prefixes, the
server uses the address pool for assignment. If the bound address pool does not have assignable
IPv6 addresses or prefixes, the assignment fails.
If no match is found, the server uses the default DHCPv6 address pool for assignment. If no default
address pool is specified or the default address pool does not have assignable IPv6 addresses or
prefixes, the assignment fails.
For successful assignment, make sure the applied DHCPv6 policy and the bound address pools
exist.
A match rule cannot match an option added by the DHCPv6 device, for example, Option 18 or Option
37.
Procedure
1. Enter system view.
system-view
2. Create a DHCPv6 user class and enter DHCPv6 user class view.
ipv6 dhcp class class-name
3. Configure a match rule for the DHCPv6 user class.
if-match rule rule-number { option option-code [ ascii ascii-string
[ offset offset | partial ] | hex hex-string [ mask mask | offset offset
length length | partial ] ] | relay-agent gateway-ipv6-address }
By default, no match rule is configured for a DHCPv6 user class.
4. Return to system view.
quit
5. Create a DHCPv6 policy and enter DHCPv6 policy view.
ipv6 dhcp policy policy-name
The DHCPv6 policy takes effect only after it is applied to the interface that acts as the DHCPv6
server.
6. Specify a DHCPv6 address pool for a DHCPv6 user class.
class class-name pool pool-name
By default, no address pool is specified for a user class.
7. (Optional.) Specify the default DHCPv6 address pool.
default pool pool-name
By default, the default address pool is not specified.
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