Global Configuration Commands
30-2 DHCPv6 Configuration
RFC 3315 also describes DHCPv6 Relay Agent interactions, which are very much like DHCPv4
Relay Agent. RFC 3046 describes the DHCPv6 Relay Agent Information Option, which employs
very similar capabilities as those described by DHCPv4 Relay Agent Option in RFC 2132.
With the larger address space inherent to IPv6, addresses within a network can be allocated more
effectively in a hierarchical fashion. DHCPv6 introduces the notion of “prefix delegation” as
described in RFC 3633 as a way for routers to centralize and delegate IP address assignment.
Default Conditions
The following table lists the default DHCPv6 conditions.
Global Configuration Commands
Purpose
These router global configuration mode commands are used to enable DHCPv6 on the router,
configure relay agent global parameters, and enter DHCP pool configuration mode.
Commands
ipv6 dhcp enable
This command enables DHCPv6 on the router.
Syntax
ipv6 dhcp enable
no ipv6 dhcp enable
Condition Default Value
IPv6 DHCP Disabled
IPv6 DHCP Relay Agent Information
Option
32
IPv6 DHCP Relay Agent Information
Remote ID Sub-option
1
IPv6 DHCP Preferred Lifetime 2592000 seconds
IPv6 DHCP Valid Lifetime 604800 seconds
For information about... Refer to page...
ipv6 dhcp enable 30-2
ipv6 dhcp relay-agent-info-opt 30-3
ipv6 dhcp relay-agent-info-remote-id-subopt 30-4
ipv6 dhcp pool 30-4
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