How to Run DHCP Relay and Server on the same box.

[GAURAV HALWASIA]

Thanks Simon. I will try this out.
 
I have couple of more questions, if you or someone else can help me out.
 
1.) When ISC Relay agent adds option 82 in upstream DHCP packets, does it adds remote-id sub option to it. I don't think so how ever looking at the code.
 
2.) Is there any way (tool or some script) which I can run on my linux box to emulate few DHCP clients as I don't have real clients. Actually I want to test out few things.
 
I want to have few bindings get created on the DHCP server with the requests comming through the Relay. But unfortunately as of now I only have one linux box with me. Can some body put some light on how this can be achieved using minimum possible hardware.
 
Best Regards,
Gaurav 

--- On Sat, 4/7/09, Simon Hobson <dhcp1 at thehobsons.co.uk> wrote:


From: Simon Hobson <dhcp1 at thehobsons.co.uk>
Subject: Re: How to Run DHCP Relay and Server on the same box.
To: "Users of ISC DHCP" <dhcp-users at lists.isc.org>
Date: Saturday, 4 July, 2009, 3:40 PM


GAURAV HALWASIA wrote:

> I have installed ISC DHCP on my linux box. Is it possible to make make it act like as both DHCP Relay and Server at the same time on the same box.
> 
> I want the DHCPDISCOVER to first get processed by Relay and then Relay should forward (after adding option 82) the same to DHCP server residing on the same box.

The only way I can think of would be to install two extra network ports. One will connect to the client network, two will connect to a separate network (either use a crossover cable or a switch - but it MUST be separate from the client network). Not sure if you could do this with a bridging and virtual interfaces instead of real ports.

Bind the relay agent to the client network and one of the other ports, bind the server to the remaining port.
-- Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
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