DELL PC7024 User Manual

DHCPv6 Commands

• rapid-commit — Is 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)

The default preference value is 20. Rapid commit is not enabled by default.

Interface Configuration (VLAN, Tunnel) mode

An IP interface (VLAN) can be configured in DHCP relay mode or DHCP 

server mode. Configuring an interface in DHCP server mode overwrites the 

DHCP relay mode configuration and vice-versa.
An interface in server mode cannot be configured as a DHCP client (ip 

address dhcp).

The following example configures DHCPv6 server functionality.

console(config)#interface vlan 15

console(config-if-vlan15)#ipv6 dhcp server pool

Use the prefix-delegation command in IPv6 DHCP Pool Configuration mode 

to define multiple IPv6 prefixes within a pool for distributing to specific 

DHCPv6 Prefix delegation clients. 

prefix-delegation 

ipv6-prefix/prefix-length client-DUID [name hostname] 

[valid-lifetime {

valid-lifetime | infinite}] [preferred-lifetime {preferred-

lifetime | infinite}]
no prefix-delegation ipv6-prefix/prefix-length

2CSPC4.XCT-SWUM2XX1.book  Page 900  Monday, October 3, 2011  11:05 AM