dhcp relay

Gergely Kiss mail.gery at gmail.com
Tue Oct 13 09:16:31 UTC 2009


It's not possible to use two or more DHCP servers reliably on a single
network segment, as you may never know which server gives a lease to a
particular client. It's because of the way DHCP works. A DHCP client sends
its request to the broadcast address and whichever server receives it first
will create a lease for that client.
The best solution, I think, is to use static (manually set) addresses to
printers, servers and other permanent equipments on your network.
DHCP relaying may work, if you know how to configure it, but I cannot help
with that as I never used relaying with Chilli.
Probably other users can tell you more about this.

2009/10/13 Oguzhan Kayhan <oguzhank at bilkent.edu.tr>

> Anybody??? :)
>
> I made a few tests more..
> I installed dhcp server to another server.
> And i also installed coova.
> Lets assume DHCP server is on 192.168.1.10
> and coova wan ip is 192.168.1.11
> So what i need to enter on coova config i guess is,
>
> But when i enter dhcpgateway 192.168.1.10
>
> the msg i got on syslog is
>
> Oct 13 11:00:04 gw coova-chilli[11812]: dhcp.c: 2262: received DHCP
> response from host other than our gateway
> Oct 13 11:00:04 gw coova-chilli[11812]: chilli.c: 4164:
> dhcp_relay_decaps() failed!
>
> if i enter dhcprelayagent 192.168.1.10
>
> nothing happens..it still gives the ip addresses from coova.
>
> Anybody experienced about that????
>
>
>
>
> > Hello,
> > I wonder am i thinking wrong about dhcprelay..
> >
> > I am planning to run a dhcpserver on same server with coova.
> > And i want to disable coova's own dhcp server, so i can give static ip's
> > to some of MACID's (like printers etc)
> > I dont wanna use anyip and and dynamic-static ip masks.
> > Because it creates other problems too.
> >
> >
> > As i see it seems possible  via freeradius+jradius.
> > What i wonder how (or can I) can i set coova to use local dhcp server
> > instead of its own or freeradius..
> >
> >
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>
>
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