Windows 2012 R2 DHCP Scope Policies

compdigit44 used Ask the Experts™
In Windows 2012 R2 DHCP Scope policies, what is the difference between Vendor Class and Client Identifier? I have some devices that I need to setup a separate policy for and got the vendor id  from the vendor yet when I select vendor class, it has a drop down with only Microsoft options. Client Identifier does let me type information in though.

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Vendor Class and Client Identifier

It depends on whether you're talking about client ID or vendor class ID. Being that you're talking about vendor class as well I'll assume you're talking about vendor class ID.

Vendor class
Is the DHCP option for a particular vendor. Think Microsoft, Cisco, etc. You can define your DHCP server to send a set of DHCP options for specific clients. If you right click your IPv4 node and select "set predefined options", the very top list is a list of your vendor pre-defined options.

Vendor class ID
This is the ASCII string that the DHCP client sends to the DHCP server in its DHCP DISCOVERY. Windows clients these days will send "MSFT 5.0" which the DHCP server knows as a Windows 2000 client, and therefore sends DHCP options relevant to that client. If you have something specific like a Cisco device or whatever that needs something special, you would set that up.

Client ID
Clients MAC address. Not much more to say about this.


Thank you for your reply, I am going to asume that Client Identifier = Vendor class ID in Windows 2012 R2 correct?
For a DHCP policy no. Vendor class is going to be the class ID the client presents to the DHCP server. E.g. MSFT 5.0. Client Identifier is going to be a MAC address usually still to the best of my knowledge.

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