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
Exclude IP Range
ip dhcp excluded-address 10.1.1.200 10.1.1.240
Create Address Reservation
config term
ip dhcp pool Server_static host 10.1.1.100 255.255.255.0 client-identifier 001E.0C1F.A1E5
Client-Identifier is the MAC address