DHCP information update

Good afternoon. We have a Windows 2003 domain with multiple DHCP servers on
it. Client workstations get their DNS, gateway (router), etc. from the DHCP
scope. I need to update and change some of the information in the scope and
need the change to apply to the user workstations. My lease time is
currently set to 7 days.

If I change the DNS entries in DHCP, how long will it take for the clients
to be updated? Do I have to wait until the client tries to renew the DHCP
lease?


Thanks in advance for any assitance,
UCG

Hello UnderCoverGuy,

After the half of the lease time, the client will try to renew it's ip. So
in your case if you change the settings and a client was powered on the same
time after 3,5 days it will try to renew it's settings. The other way is
to shutdown/restart all workstations remote after you change the scope settings
and then with the startup they get the new settings.

So you can use the shutdown.exe from MS to remote shutdown/restart the workstations
at close of business.

Best regards

Meinolf Weber
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> Good afternoon. We have a Windows 2003 domain with multiple DHCP
> servers on it. Client workstations get their DNS, gateway (router),
> etc. from the DHCP scope. I need to update and change some of the
> information in the scope and need the change to apply to the user
> workstations. My lease time is currently set to 7 days.
>
> If I change the DNS entries in DHCP, how long will it take for the
> clients to be updated? Do I have to wait until the client tries to
> renew the DHCP lease?
>
> Thanks in advance for any assitance,
> UC

Thanks for the reply. That looks like that is what I am going to have to do.

Just wish that MS (or someone) could set up DHCP so that updates can be
centrally "pushed" out to the client versus the client pulling the
information down.


Thanks again,
UCG

Hello UnderCoverGuy,

That is nothing that is MS special. DHCP is a Standard that evrybody uses,
see here: http://www.faqs.org/rfcs/rfc2131.html
Also you could lower down your lease time, to get updates faster pushed out.
We use a lease time from 8 hours and it is not that much traffic going over
the network during the lease refresh, especially the clients will not refresh
the same time. Your clients will not start working at the same millisecond.:-)

Best regards

Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.
** Please do NOT email, only reply to Newsgroups
** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm

> Thanks for the reply. That looks like that is what I am going to have
> to do.
>
> Just wish that MS (or someone) could set up DHCP so that updates can
> be centrally "pushed" out to the client versus the client pulling the
> information down.
>
> Thanks again,
> UC