Multiple class setup

[Sten Carlsen]

There is also the question of what the addresses in the host statements are.

The addresses (looked up from DNS) determine which subnet the hosts
appear in, the placement of the host statements do NOT have any
influence on that (as also Glenn states).

On 04/10/14 12.02, Glenn Satchell wrote:
> Hi Chris
>
> Defining a host record inside a subnet does not cause that host to be
> bound or in any way assigned to that subnet. A host definition is, by
> definition a global statement.
>
> You need a way to differentiate the two different types of client so they
> are restricted to their specific subnet. A client defined in a host
> statement is a "known-client", so in your case there are two things to do
> to fix the situation:
>
> 1) move the host statements outside the subnet and shared-network
> definitions.
>
> 2) in the first subnet add a pool and deny statement, move the range into
> the pool:
>         pool {
>                  range 10.0.1.65 10.0.1.126;
>                  allow unknown-clients;
>         }
>                  option routers 10.0.1.3;
>                  option ntp-servers 10.0.1.3;
>                  option broadcast-address 10.0.1.127;
>                  option domain-name "local.lan";
>                  option domain-name-servers 10.0.1.3;
>
>                  default-lease-time 10800;
>                  max-lease-time 21600;
>
>    similarly, in the second subnet add a pool and allow statement, move
> the range into the pool:
>
>        pool {
>                 range 10.0.1.128 10.0.1.142;
>                 deny unknown-clients;
>        }
>        # rest of the original subnet statements ...
>
> There is an example in the ADDRESS POOLS section of the dhcpd.conf man page.
>
> regards,
> -glenn
>
>
> On Sat, October 4, 2014 7:11 pm, Chris wrote:
>> Hi all.
>> I'm trying to configure the dhcp server to grant leases in same subnet but
>> different cidr classes however it doesn't appear to be working:
>>
>> * dhcp/dns server and router is 10.0.1.3/255.255.255.0
>> * any dhcp request should get a short term lease in 10.0.1.64/26
>> * dhcp requests from specified mac addresses get long term lease in
>> 10.0.1.128/28
>>
>> shared-network local {
>>
>>         # short term
>>         subnet 10.0.1.64 netmask 255.255.255.192 {
>>                 range 10.0.1.65 10.0.1.126;
>>                 option routers 10.0.1.3;
>>                 option ntp-servers 10.0.1.3;
>>                 option broadcast-address 10.0.1.127;
>>                 option domain-name "local.lan";
>>                 option domain-name-servers 10.0.1.3;
>>
>>                 default-lease-time 10800;
>>                 max-lease-time 21600;
>>         }
>>
>>         # long term
>>        subnet 10.0.1.128 netmask 255.255.255.240 {
>>                range 10.0.1.128 10.0.1.142;
>>                option routers 10.0.1.3;
>>                option ntp-servers 10.0.1.3;
>>                option broadcast-address 10.0.1.143;
>>                option domain-name "local.lan";
>>                option domain-name-servers 10.0.1.3;
>>
>>                default-lease-time 604800;
>>                max-lease-time 864000;
>>
>>                host solaredge1 {
>>                         hardware ethernet 00:27:02:10:65:49;
>>                         fixed-address pv-inverter1.local.lan;
>>                }
>>
>>                host solaredge2 {
>>                         hardware ethernet 00:27:02:10:30:21;
>>                         fixed-address pv-inverter2.local.lan;
>>                }
>>
>>                host cctv-dvr {
>>                         hardware ethernet 00:19:fb:e2:ab:1b;
>>                         fixed-address cctv.local.lan;
>>                }
>>
>>
>>        }
>> }
>>
>> Hostnames in the "long term" range have corresponding A and PTR records in
>> the
>> dns zone but they still get "short term" IPs assigned.
>> What's the right way to implement the setup?
>> Thanks
>>
>> -Chris
>>
>>
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>>
>
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-- 
Best regards

Sten Carlsen

No improvements come from shouting:

       "MALE BOVINE MANURE!!!" 

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