Users Guide

Switch Management Commands 2007
Up to 10 relay destinations may be configured per interface. If a destination
relay address has global scope, then the interface option (option 18) is not
required. If the destination relay address scope is link local (FE80::) or
multicast (FF00::/8), then the destination interface option (Option 18) must
be configured.
If no relay destination is configured, then a relay interface must be
configured and the DHCPV6-ALLAGENTS multicast address (i.e.
FF02::1:2) is used to relay DHCPv6 messages to the relay server.
The remote ID (option 37) may be configured with the keyword duid-ifid,
which causes the remote ID to be derived from the DHCPv6 server DUID
and the relay interface, or it may be a user-defined string. The remote ID
must be unique.
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.
• pref-value — Preference value — used by clients to determine preference
between multiple DHCPv6 servers. (Range: 0-4294967295)
Default Configuration
The default preference value is 20. Rapid commit is not enabled by default.