Switch a client to fixed pool after dynamic ip delegation

AJH ajh4711 at gmx.de
Fri Mar 1 06:53:49 UTC 2013

Hello together,

I have the same problem...

How work that deny/accept rules?

In my case I have the same ip range for both (dynamic and fixed).

For me it's no posibility to work with MAC adresses.

I am also happy about every idea...

thanks ajh

[ Denis Laventure <Denis_Laventure at uqac.ca> - 28.02.2013      19:22:13 ]:

> Hi,
> I think it's because you use a static via agent circuit id. When the client send a DHCPREQUEST it goes right to the DHCP server without passing by your DHCP relay (no broadcast), so the option-82 (circuit id) doesn't exist in the request from the client, it's added by the relay. 
> I know it doesn't fix your problem, but if you use a static via a MAC address it will work.
>  Denis
> -----Message d'origine-----
> De : dhcp-users-bounces+denis_laventure=uqac.ca at lists.isc.org [mailto:dhcp-users-bounces+denis_laventure=uqac.ca at lists.isc.org] De la part de Andreas Hanke
> Envoyé : 28 février 2013 11:34
> À : dhcp-users at lists.isc.org
> Objet : Switch a client to fixed pool after dynamic ip delegation
> Hello everyone,
> I have an isc dhcp server.
> The configuration is mixed between a dynamic pool and some static fixed pools (with option agent circuit id).
> That means:
> a lot of clients get there ip from the pool dynamic.
> a lot of clients get there ip "fixed" via the agent circuit id option of the static fixed pool configuration.
> My problem:
> If I switch a client from the dynamic pool into the fixed "area" the client send his next DHCPREQUEST with the "old ip from the pool".
> and...the dhcp server says "OK you could have that"
> altough a fixed pool entry exists...
> Is there any posiblity to tell the DHCP server if a static fixed pool exists only use this?
> thanks...
> Have anyone, any idea?
> --
> thanks a lot andy
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thanks + bye ajh 

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