In STC DHCP server, there are two properties:
“Lease Time” and “Min Allowed Lease Time”.
STC DHCP server will use clients “suggested lease time” if “suggested lease time” >= “Min Allowed Lease Time” AND “suggested lease time” <=“Lease Time”, otherwise it will not.
1st snap shot show Server set for min 600s and lease time 3600s.
2nd snap shot show Client set for 700s lease time.
In this case the Server will accept suggested lease time.