R211x-HP Flexfabric 11900 Layer 3 - IP Services Command Reference

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Default
No IPv6 prefixes in the DHCPv6 prefix pool are excluded from dynamic allocation.
Views
System view
Predefined user roles
network-admin
mdc-admin
Parameters
start-prefix/prefix-len: Specifies the start IPv6 prefix. The prefix-len argument specifies the prefix length in
the range of 1 to 128.
end-prefix/prefix-len: Specifies the end IPv6 prefix. The prefix-len argument specifies the prefix length,
ranging from 1 to 128. The value for end-prefix cannot be lower than that for start-prefix. If this argument
is not specified, only the start-prefix/prefix-len is excluded from dynamic allocation. If it is specified, the
prefixes from start-prefix/prefix-len to end-prefix/prefix-len are all excluded.
Usage guidelines
You can exclude multiple IPv6 prefix ranges from dynamic allocation.
If the excluded IPv6 prefix is in a static binding, the prefix can still be assigned to the client.
The prefix or prefix range specified in the undo form of the command must be the same as the prefix or
prefix range specified in the command. To remove a prefix that has been specified as part of a prefix
range, you must remove the entire prefix range.
Examples
# Exclude IPv6 prefixes from 2001:3e11::/32 through 2001:3eff::/32 from dynamic allocation.
<Sysname> system-view
[Sysname] ipv6 dhcp server forbidden-prefix 2001:3e11::/32 2001:3eff::/32
Related commands
• ipv6 dhcp server forbidden-address
• static-bind
network
Use network to specify an IPv6 subnet for dynamic allocation in a DHCPv6 address pool.
Use undo network to remove the specified IPv6 subnet.
Syntax
network prefix/prefix-length [ preferred-lifetime preferred-lifetime valid-lifetime valid-lifetime ]
undo network
Default
No IPv6 subnet is specified in an address pool.
Views
DHCPv6 address pool view