Configuring an IPv6 Address Pool

After an IPv6 prefix pool is configured in NDRA address allocation mode, you need to configure an IPv6 address pool.

Context

Prefix pool binding

A prefix pool can be bound to only one address pool. Similarly, an address pool can be bound only to one prefix pool. Table 1 shows the binding between address pools and prefix pools.

**Table 1** Binding between address pools and prefix pools
Address Pool Type	Prefix Pool for Binding
User-side local address pool	Local prefix pool
User-side delegation address pool	Delegation prefix pool
User-side relay address pool	Local prefix pool
User-side remote address pool	Remote prefix pool

Priority

Among address pools of the same type, a greater priority value indicates a higher priority.

In NDRA address allocation mode, BAS local address pools are used to allocate shared prefixes, whereas BAS delegation address pools are used to allocate unshared prefixes. A BAS delegation address pool configured with slaac-unshare-only takes precedence over other BAS delegation address pools.
Address pool locking

An IPv6 address pool whose addresses are in use cannot be deleted. To delete an IPv6 address pool, first run the lock command in the IPv6 address pool view to lock the pool and then delete it after all online users have logged out.
DNS suffix

Only one domain name suffix can be set for an IPv6 address pool.
DNS server

A maximum of two DNS servers can be bound to an IPv6 address pool.
Address lease

If an IPv6 address pool has been bound to a domain, the address lease cannot be changed.

Procedure

Run system-view
The system view is displayed.
(Optional) Run access wait-request-time dhcpv6 time-value
The timeout period for a router to wait for a Request message from a client in response to an Advertise message sent to the client is set.
Run ipv6 pool pool-name { bas { local | delegation | remote } }
An IPv6 address pool is created, and the IPv6 address pool view is displayed.
Run prefix prefix-name
The IPv6 address pool is bound to an IPv6 prefix pool.
(Optional) Run preference preference-value
A priority value is set for the IPv6 address pool.

The default value is 255.
(Optional) Run dns-server ipv6-address &<1-2>
A DNS server is specified for an IPv6 address pool. An IPv6 address is used to specify a DNS server.
(Optional) Run dns-search-list dns-search-list-name
A DNS suffix is configured for domain name resolution.
(Optional) Run renew-time-percent renew-time-value rebind-time-percent rebind-time-value
A lease renewal time and a rebinding time are set for the IPv6 address pool.
(Optional) Run ipv6-pool statistic include shared-user
IPv6 address pool statistics include those about users sharing the prefix pool.
(Optional) Run wait-request-time time-value
The timeout period for a router to wait for a Request message from a client in response to an Advertise message sent to the client is set.

The wait-request-time time-value command is run in the IP address pool view whereas the access wait-request-time dhcpv6 time-value command is run in the system view. If the two commands are both run, the wait-request-time time-value command takes effect.
Run commit
The configuration is committed.