From LedHed's Wiki
Creating a DHCP Pool
Switch to configure mode
config term
Create an address pool
ip dhcp pool <POOLNAME>
Specify the network to provide address for
network 10.1.1.0 /24
Set the clients default gateway
default-router 10.1.1.254
Set the clients DNS Servers
dns-server 10.1.1.1 10.1.1.2
Set the clients lease timeout in hours
lease 8