DHCP options

DT DT dt.techno99 at gmail.com
Tue Sep 29 20:38:10 UTC 2009


Thank you so much for your response Glenn,

Do you know, or somebody else knows, which is the DHCP client used by
Windows XP?, or wheather Windows XP can handle this optional settings? what
kind of modifications should we implement on the clients that they support
this options if it is possible to send them though DHCP?

Thanks and Greetings,
Alma R.


2009/9/28 Glenn Satchell <Glenn.Satchell at uniq.com.au>

>
> >Date: Mon, 28 Sep 2009 13:43:29 -0500
> >Subject: DHCP options
> >From: DT DT <dt.techno99 at gmail.com>
> >To: dhcp-users at lists.isc.org
> >X-BeenThere: dhcp-users at lists.isc.org
>  >
> > Hello,
> >
> > I request your help in case somebody knows about the time options for a
> DHCP
> > server:
> > At the company where i work we have implemented a NTP server, we have a
> > large amount of ntp clients we want to sincronize (windows XP most of
> them).
> > We are thinking of using DHCP options to try to send the NTP server
> address
> > as well as the correct time zone (UTC-6 & UTC-7).
> > We have tested on linux clients and they take the NTP server address but
> not
> > time zome; windows clients seem to ignore these 2 settings the DHCP
> server
> > sends them.
> >
> > These are the options we have implemented on the DHCP server to send NTP
> > server settings and timezone:
> >
> > option pcode code 100 = text;
> > option tcode code 101 = text;
> >  ......
> >
> >  option ntp-servers 10.0.78.61;
> >  option pcode "CST6CDT";
> >  option tcode "America/Mexico_City";
> >  option time-offset    -21600;
> >
> > I appreciate any advice you may have.
> >
> > Best Regards,
> > Alma R.
>
> Hi Alma
>
> The dhcp-options man page lists all the DHCP options that the dhcp
> server can set, but that does not mean every client will use all of
> them.
>
> You will need to look up the documentation for your various clients.
> There are only a few mandatory options that clients must implement.
> There are a lot that are, well, optional.
>
> Each client has an option that it sends listing the option fields that
> it wants the dhcp server to supply. If the client does not request a
> particular option then the dhcp server will not send it. Even if you
> force the server to send an option, the client may not know how to
> decode and use the value.
>
> regards,
> -glenn
> --
> Glenn Satchell   mailto:glenn.satchell at uniq.com.au | Miss 9: What do you
> Uniq Advances Pty Ltd       http://www.uniq.com.au | do at work Dad?
> PO Box 70 Paddington NSW Australia 2021            | Miss 6: He just
> tel:0409-458-580     fax:02-9380-6416              | types random stuff.
>
>
>
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