ip dhcp excluded-address 10.10.10.1 10.10.10.3     ! scope is HSRP v4s
ip dhcp excluded-address 10.10.10.14 10.10.10.255  ! scope assigned by R2
!
ip dhcp pool VLAN10
 network 10.10.10.0 255.255.255.0   ! some random /24 scope
 dns-server 200.200.200.1           ! one or more servers listed
 default-router 10.10.10.1          ! tell default gateway to clients
!
ip dhcp snooping vlan 10            ! look for unauthorized dhcp servers