[Cialug] DHCP question - Vendor info.

[Nathan C. Smith]

This 'vendor-class-identifier' may be the animal I am looking for.  Is there a way to find out what a certain product pushes out?

-Nate

> -----Original Message-----
> From: cialug-bounces at cialug.org 
> [mailto:cialug-bounces at cialug.org] On Behalf Of Aaron Porter
> Sent: Wednesday, August 12, 2009 12:03 PM
> To: Central Iowa Linux Users Group
> Subject: Re: [Cialug] DHCP question - Vendor info.
> 
> On Wed, Aug 12, 2009 at 9:51 AM, Josh
> More<morej at alliancetechnologies.net> wrote:
> > I'm not an expert, but the few times I've needed to do vendor 
> > identification on a network, I just use the first three 
> bytes and that 
> > gets the job done.
> >
> > I don't think it's any more complex than that.
> 
> It's oh SO MUCH MORE complicated than that, naturally. Josh 
> is talking about an Ethernet OUI (look up service here 
> http://standards.ieee.org/regauth/oui/index.shtml ). That'll 
> tell you who manufactured the computer or ethernet card 
> sending the request, and can be quite useful. The DHCP 
> protocol has all sorts of knobs that can be set by the 
> requesting client, a quick `man 5 dhcp-options` will lead you 
> down that rabbit warren, including such strings as:
> 
> vendor-class-identifier
> vendor-encapsulated-options
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