220
Switch(config)# ipv6 general-prefix my-prefix 2001:da8:221::/48
21.17 ipv6 local pool
Command: ipv6 local pool
<poolname> <prefix/prefix-length> <assigned-length>
no ipv6 local pool
<poolname>
Function:
To configure the address pool for prefix delegation. The no form of this
command will remove the IPv6 prefix delegation configuration.
Parameters: <
poolname
>
is the name for the IPv6 address pool of the prefix delegation,
the length name string should be less than 32.
<
prefix/prefix-length
>
is the address
prefix and its length of the prefix delegation.
<
assigned-length
>
is the length of the prefix
in the address pool which can be retrieved by the client, the assigned prefix length should
be no less than the value of
<
prefix-length
>
Command Mode:
Global Mode.
Default:
No IPv6 prefix delegation address pool is configured by default.
Usage Guide:
This command should be used with the
―
prefix delegation pool
‖
command to allocate address prefixes to the clients. If IPv6 prefix delegation is removed,
the associated
―
prefix delegation
‖ command will be in-effective either.
21.18 lifetime
Command: lifetime {
<valid-time>
| infinity} {
<preferred-time>
| infinity}
no lifetime
Function:
To configure the life time for the addresses or the address prefixes allocated by
DHCPv6. The no form of this command will restore the default setting.
Parameters: <
valid-time>
and <
preferred-time
>
are the valid life time and preferred life
time respectively for the allocated IPv6 addresses in the local address pool. Its value is
allowed to be between 1 and 31536000 in seconds, and
<
preferred-time
>
should never
be bigger than
<valid-time
>
. The
infinity
parameter designates the maximum life time.
Command Mode:
DHCPv6 Address Pool Configuration Mode.
Default:
The default valid life time and preferred life time are 2592000 seconds (30 days)
and 604800 seconds (7 days) respectively.
Example:
To configure the valid life time as 1000 seconds, and the preferred life time as
600 seconds.
Switch(config)#lifetime 1000 600
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