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the excluded address will not be allocated to any hosts; the no form of this command will
remove the configuration.
Parameter: <ipv6-address> is the IPv6 address to be excluded from being allocated to
hosts in the address pool.
Default: Disabled
Command Mode: DHCPv6 address pool configuration mode.
Usage Guide: This command is used to preserve the specified address from DHCPv6
address allocation.
Example: To configure to exclude 2001:da8:123::1 from DHCPv6 address allocation.
Switch(config)#excluded-address 2001:da8:123::1
21.10 ipv6 address
Command: ipv6 address <prefix-name> <ipv6-prefix/prefix-length>
no ipv6 address <prefix-name> <ipv6-prefix/prefix-length>
Function: To configure the specified interface to use prefix delegation for address
allocation. The no form of this command will disable the using of prefix delegation for
address allocation.
Parameters: <prefix-name> is a string with its length no more than 32, designating or
manual configuring the name of the address prefix defined in the prefix pool.
<ipv6-prefix/prefix-length> is latter part of the IPv6 address excluding the address prefix,
as well as its length.
Command Mode: Interface Configuration Mode.
Default: No global address is configured for interfaces by default.
Usage Guide: The IPv6 address of an interface falls into two parts: <prefix-name> and
<ipv6-prefix>/<prefix-length>. If routing advertisement has been enabled, the first 64
bits of the addresses will be advertised. The address generated by <prefix-name> and
<ipv6-prefix/prefix-length> combination will be removed, and the advertising of the
prefix will be disabled. Only one <ipv6-prefix/prefix-length> can be configured for one
prefix name.
Example: If the prefix name my-prefix designates 2001:da8:221::/48, then the following
command will add the address 2001:da8:221:2008::2008 to interface VLAN1.
Switch(Config-if-Vlan1)# ipv6 address my-prefix 0:0:0:2008::2008/64
21.11 ipv6 dhcp client pd
Command: ipv6 dhcp client pd <prefix-name> [rapid-commit]
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