Quick Reference Guide

DHCPv6 Commands 963
Command Mode
Interface Configuration (VLAN, Tunnel) mode
User Guidelines
The IPv6 DHCP service must be enavbled to use this feature. Enable the
IPv6 DHCP service using the service dhcpv6 command. If
relay-address is an
IPv6 global address, then
relay-interface is not required. If relay-address is a
link-local or multicast address, then
relay-interface is required. Finally, a value
for
relay-address is not specified, then a value for relay-interface must be
specified and the DHCPV6-ALLAGENTS multicast address (i.e. FF02::1:2)
is used to relay DHCPv6 messages to the relay server. An IP interface (VLAN)
can be configured in DHCP relay mode or DHCP server mode. Configuring
an interface in DHCP relay mode overwrites the DHCP server mode and vice-
versa.
An IP interface configured in relay mode cannot be configured as a DHCP
client (ip address dhcp).
Example
The following example configures VLAN 15 for DHCPv6 relay functionality.
console(config)#service dhcpv6
console(config)#interface vlan 15
console(config-if-vlan15)#ipv6 dhcp relay destination 2020:1::1
ipv6 dhcp server
Use the ipv6 dhcp server command in Interface Configuration mode to
configure DHCPv6 server functionality on an interface. For a particular
interface DHCPv6 server and DHCPv6 relay functions are mutually exclusive.
Syntax
ipv6 dhcp server pool-name [rapid-commit] [preference pref-value ]
• pool-name — The name of the DHCPv6 pool containing stateless and/or
prefix delegation parameters
•
rapid-commit — An option that allows for an abbreviated exchange
between the client and server.
2CSNXXX_SWUM200.book Page 963 Tuesday, December 10, 2013 1:22 PM