Specifications

2-189
Cisco ME 3400 Ethernet Access Switch Command Reference
OL-9640-07
Chapter 2 Cisco ME 3400 Ethernet Access Switch Cisco IOS Commands
ipv6 dhcp server
ipv6 dhcp server
Use the ipv6 dhcp server interface configuration command to enable Dynamic Host Configuration
Protocol for IPv6 (DHCPv6) service on an interface. To disable DHCPv6 service on an interface, use the
no form of this command.
ipv6 dhcp server [poolname | automatic] [allow-hint] [rapid-commit] [preference value]
no ipv6 dhcp server
Note This command is available only if the is running the metro IP access image and you have configured a
dual IPv4 and IPv6 Switch Database Management (SDM) template on the switch.
Syntax Description
Defaults By default, no DHCPv6 packets are serviced on the interface.
Command Modes Interface configuration
Command History
Usage Guidelines The ipv6 dhcp server interface configuration command enables DHCPv6 service on a specified
interface.
If you enter the automatic keyword, the system automatically determine which pool to use when
allocating addresses for a client. When the server receives an IPv6 DHCP packet, the server determines
if it was received from a DHCP relay or if it was directly received from the client. If the packet was
received from a relay, the server verifies the link-address field inside the packet associated with the first
relay that is closest to the client. The server matches this link-address against all address prefix and
link-address configurations in IPv6 DHCP pools to find the longest prefix match. The server selects the
pool associated with the longest match.
poolname (Optional) User-defined name for the IPv6 DHCP pool. The pool name can
be a symbolic string (such as Engineering) or an integer (such as 0).
automatic (Optional) Enable the server to automatically determine which pool to use
when allocating addresses for a client.
allow-hint (Optional) Specify whether the server should consider client suggestions in
the SOLICIT message. By default, the server ignores client suggestions.
preference value (Optional) The preference value carried in the preference option in the
advertise message sent by the server. The range is from 0 to 255. The default
is 0.
rapid-commit (Optional) Allow two-message exchange method.
Release Modification
12.2(50)SE The automatic keyword was added to the command.