IP address range

[Jason Penton]

Sorry to come back to this guys but I have another probem:

Lets say a relay agent is sitting on 10.31.3.10 and we want to issue
172.16.0.0/16 addresses to all clients requesting an IP, how would one
set that up. We can assume that the dhcp server is on 10.31.3.1

if i put in the following:
subnet 172.16.0.0 netmask 255.255.0.0 {
     pool {
        range 172.16.0.1 172.16.255.254
     }
}

then when I get the relayd req from 3.10 then dhcp says there is no
network configured for 3.10 (unknown network segment).

So then i just create a subnet for 10.31.3.0/24, however I cant put
the range of IPs (172.16.0.0/16) in that subnet because then dhcp does
not startup, giving an error of "bad range - 172.16.0.0 not in
10.31.3.0/25".

It would be great if someone could shed some light on how I would
configure such a scenario

Kind regards
Jason

On Tue, Jul 14, 2009 at 5:50 PM, Simon Hobson<dhcp1 at thehobsons.co.uk> wrote:
> Jason Penton wrote:
>
>> I want to use DHCPD to server addresses for the follwoing network
>> 172.16.0.0/16. How do I configure this in the dhcpd.conf file. ie.
>> will it look as follows:
>>
>> range 172.16.0.1 176.16.254.254
>
> The available range is actually 172.16.0.1 to 172.16.255.254. In practice
> you wouldn't want to do this though.
>
> 1) It's a lot of addresses and will slow down the server. Better to keep the
> range closer to your actual needs (I'm assuming you don't have 65,000
> clients on the network).
>
> 2) It leaves no free addresses for routers or other devices.
>
> The netmask is 255.255.0.0
>
> --
> Simon Hobson
>
> Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
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