DHCP Minimum Lease Duration
ID: Q158016
|
The information in this article applies to:
-
Microsoft Windows NT Workstation versions 3.5, 3.51, 4.0
-
Microsoft Windows NT Server versions 3.5, 3.51, 4.0
-
Microsoft Windows 95
-
Microsoft Windows 98
-
Microsoft Windows 2000 Professional
-
Microsoft Windows 2000 Server
-
Microsoft Windows 2000 Advanced Server
SUMMARY
The Microsoft Windows NT DHCP Service has been designed to allow a network administrator to assign a lease duration shorter than one hour for testing purposes. Always assign a lease duration longer than one hour for production systems in real work environments.
Section 3.3 of Internet RFC 1541 originally defined the minimum DHCP lease duration as one hour. RFC 2131 supersedes RFC 1541 and removes the minimum lease duration limit. However, for production systems, it is recommended that the minimum one-hour specification be adhered to.
MORE INFORMATION
It is typically not neccessary to change the DHCP scope lease time from its three-day default setting. If you think you need to change the default lease time, follow the recommendations below.
Reduce lease durations for DHCP scopes where high client turnover is found (for example, classroom or conference room environments where clients frequently come and go). DHCP scopes that are used for dial-up networking clients are another example.
Additionally, a DHCP Administrator may want to assign a shorter lease time to scopes with low ratios of availible addresses. Setting the lease time shorter in both these cases will increase the availiblity of addresses.
REFERENCES
RFC1541 RFC2131
Additional query words:
prodnt dhcp RFC1541 RFC2131
Keywords : kbnetwork ntprotocol nttcp NTSrvWkst
Version : WINDOWS:2000,95; winnt:3.5,3.51,4.0
Platform : WINDOWS winnt
Issue type : kbinfo