How do you test your dhcpd setup?

Leandro ingrogger at
Fri Jul 17 13:27:23 UTC 2015

I know exactly how you feel.
try dhcperf , its also a benchmark tool.

On 16/07/15 14:05, Frank Price wrote:
> Greetings dhcp-users,
> I've recently taken over a pair of ISC DHCP 4.2.5 servers, and I'd 
> like to know how you test your environment -- both for troubleshooting 
> and also for validating config changes.  To make things concrete, let 
> me briefly explain our setup and then what I'd like to be able to do.
> We have about 70 subnets defined, with failover peers on most of them 
> between our two servers.  Our network (cisco) vlan config has ip 
> helper-addresses which point to both servers.  Mostly we do 
> interim-style ddns, although there are some static host entries.
> Usually everything works fine, until it doesn't, and every few months 
> we add a new subnet for a lab or something.  To troubleshoot, or 
> double-check changes,  I'd like to be able to simulate a lease request 
> from a client. Right now what I do is a) run dhcpd -t against the 
> changes, and then b) stand up a vm on the new subnet and see what 
> happens.  It would be much nicer to simply say "pretend you get a 
> request from this MAC on this subnet, and show me what you'd do."
> I've tried dhcping, and it seems to require me to run it from a server 
> already on the subnet in question -- not quite what I want, but maybe 
> I just don't understand it well.
> Thanks for any advice you can provide,
> -Frank
> --
> Frank Price | R & D Services | Lexmark International
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> dhcp-users at

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