Use the offer-reuse command to specify the maximum timeframe after which an offered IP address can be returned to the pool of free addresses. This timeframe can be from 1-120 seconds. In this example, the timeout is set to 10 seconds.
SEFOS# configure terminal SEFOS(config)# ip dhcp server offer-reuse 10 SEFOS(config)# end
SEFOS# show ip dhcp server information DHCP server status : Enable Send Ping Packets : Enable Debug level : None Server Address Reuse Timeout : 10 secs Next Server Address : 0.0.0.0 Boot file name :