Re: DHCP - obscure error message

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You're the cat's whiskers <G>. When I saw Terry's question I did not
expect such an formative reply!



~~~~


Gerry
~~~~
FCA
Stourport, England
Enquire, plan and execute
~~~~~~~~~~~~~~~~~~~
Whiskers wrote:
["Followup-To:" header set to 24hoursupport.helpdesk.]
On 2008-07-17, Terry Pinnell <terrypinDELETE@xxxxxxxxxxxxxxxxxxx>
wrote:
In Event Viewer I see many errors like this
---------
DHCP
"The IP address lease 192.168.x.xx for the Network Card with network
address xxxxxxxxxx has been denied by the DHCP server 192.168.1.1
(The DHCP Server sent a DHCPNACK message)." [I've inserted the x's
for security.]
---------

Totally meaningless to me! Any of the experts able to help please?


<http://www.ex-designz.net/tcpipguide.asp>:-

LEASE RENEWAL
DHCP clients will attempt to renew their leases when %50 of the
lease has expired. The client will send a DHCPREQUEST message to
the server that assigned the lease. Assuming the DHCP server
isn't on fire or anything it will send out a DHCPACK with the new
lease. If the server is unavailable, then the client can continue
functioning as it has %50 remaining still. The client will
continue as normal until the lease reaches %87.5 used at which
time it broadcast to all DHCP servers and attempt to get a new
lease. If the client receives a DHCPNACK message or the lease
expires then the client must start all over again and will get a
different IP address. If the lease expires and the client is
unable to get a new one then the user will be whining to their IS
dept. about it because they will not be able to communicate over the
network.


See also
<http://www.microsoft.com/technet/support/ee/SearchResults.aspx?Type=0&Message=dhcpnack>


.

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