Log into the Cisco and adjust the lease time to one day. The link below is the manual for the Cisco, take a look at page 30 for log in and page 34 shows the screen to adjust the lease time.
http://www.cisco.com/c/dam/en/us/td/.../4021192_B.pdf
http://www.cisco.com/c/dam/en/us/td/.../4021192_B.pdf
