assigning ip from windows dhcp server for specific class

imax36581 · 07-16-2008, 07:27 AM

hi my friends
some times in my network i have a ubuntu user that acquiring ip from microsoft dhcp server(2003).
how can i define new vendor class in my dhcp server that specific set any computer that use ubuntu as their os.
can i do this?
remember that i want to define vendor class not user class...
in the default setting dhcp have these vendor class:microsoft option,microsoft windows 2000,microsoft windows 98 and microsoft windows xp.
i want to define new one but i don't know witch class id must i set.
thanks in advance.

bsdunix · 07-16-2008, 08:38 AM

According to the dhclient(8) man page, the -V option sets the vendor-class-identifier.

According to the dhcpcd(8) man page, the -i option sets the vendorClassID "dhcpcd uses the default vendor class identifier string (system name, system release, and machine type) if it is not specified."

So, it appears that you can manually set the vendor class ID to your site requirements.

This article describes how to set the vendor class ID for Windows 2000 DHCP server, but it may also apply to 2003:

How to Create a New DHCP User or Vendor Class
http://support.microsoft.com/?id=240247

imax36581 · 07-16-2008, 04:03 PM

thanks but this article don't show me the specific vendor id for linux system.creating a class and set that is easy but vendor class id is specific name that match for that systems.
of course,if i want to use user class id i can do this with any name but for vendor class i must use the specific name that windows server detect any linux systems with that.i want that name.
for example the word "Sun" works fine for sun systems(in verndor class id) but "Linux" isn't work...
any idea?

bsdunix · 07-17-2008, 07:16 AM

Quote:

"dhcpcd uses the default vendor class identifier string (system name, system release, and machine type) if it is not specified."

Do a tcpdump and see what your Linux distro is sending. This can also be set per what I posted previously according to the man pages.