[NTLUG:Discuss] DHCP diagnostic program

[crem]

Just seen this..

DHCP is a Layer 2 protocol that acts like Layer 3. DHCP can be a difficult protocol to troubleshoot especially with Vlans (tagging) in a mixed data and VoIP environment. Different applications use different methods for troubleshooting options 176 (a.k.a. DHCP options 176 strings) for clients and servers. I use Wireshark/snoop to verify DHCP's operation.

Charles Rem


-----Original Message-----
From: discuss-bounces at ntlug.org [mailto:discuss-bounces at ntlug.org] On Behalf Of Robert Citek
Sent: Monday, May 09, 2011 23:12
To: NTLUG Discussion List
Subject: Re: [NTLUG:Discuss] DHCP diagnostic program

On Mon, May 9, 2011 at 11:05 AM, Preston Hagar <prestonh at gmail.com> wrote:
> On Thu, May 5, 2011 at 11:41 PM, Leroy Tennison
> <leroy_tennison at prodigy.net> wrote:
>> I'm looking for a program to test DHCP server responses.  Specifically, I
>> need a program where I can specify the DHCP server and options I want
>> returned (option 176 specifically since this is telephony-related) and have
>> it display the results (preferably without assigning anything to the host).
>>  Any ideas?  Thanks for your help.
>>
>
> This may be too basic for what you are looking for, but the check_dhcp
> script in Nagios can do most of what you want.   In ubuntu, you would
> do

That is fantastic.  Thanks, Preston.  I've been looking everywhere for
such a tool to diagnose/troubleshoot DHCP server setups.

Regards,
- Robert

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