ip dhcp limit lease

[mspdog22]

Hello 

We are facing an issue with limiting a dhcp lease from our dhcp server on a switch interface. We have issued the command below and are not able to limit the lease down to 1 lease. We are setting this up do to some security requirements. 

ip dhcp limit lease 1

[MHM Cisco World]

This command I think use if router is local dhcp server. 

It not work of you use external dhcp server. 

MHM

[marce1000]

 - Check logs on the switch for subsequent connections of devices and dhcp behavior , even more  : do the same on the DHCP server.
  You did not provide  the switch model but check software version and use latest (advisory) to overcome possible bugs , then 
  verify again , 

 M.

[mspdog22]

We are using cisco 3850 switch with latest long term code update. 

Our dhcp server is not located on the switch it self. 

we are using a linux server to provide the dhcp hand out.