Re: DHCP question

[Lonnie Cumberland <lonnie neenet com>]

Thanks Chris for giving me more information on this subject.

Actually the project idea that I am playing with could potentially 
include a huge number of entries that is always changing with short 
lease times as well.

thanks again,
Lonnie

Christopher K. Johnson wrote:

> Lonnie Cumberland wrote:
>
> > which can be placed in the config file for each client machine after 
> > which the daemon can be started, right?
>
>
> Right.
>
> > Well, I am wondering how can client configurations be added/removed 
> > dynamically while the daemon is running and without causing a problem 
> > when many clients are involved.
>
>
> First of all dhcp leases are not dependent upon maintaining a session 
> with a dhcp server.  The process of acquiring a lease, and later 
> renewing it is a simple brief exchange between the client and server.  
> And a client will attempt renewal several times before the lease 
> expires, so a momentary failure should not cause the loss of a lease.
>
> Because of this restarting a dhcp server is unlikely to impact anyone 
> unless it serves a large number of clients with very short lease times.
> By using the command:
> service dhcpd restart
> to restart the daemon it will include testing the configuration first, 
> and not stopping and restarting unless the configuration is error 
> free.  This prevents a lengthier outage while you figure out your 
> editing mistake.
>
> Chris