OMAPI Host Object and Duplicate MACs in different subnets

[Caciano Machado]

Another problem is mobility. For example, a notebook that is used in
various subnets.

On Tue, Jul 8, 2008 at 12:54 PM, Caciano Machado <caciano at gmail.com> wrote:
> Yes... in a large network it's very common.
>
> On Tue, Jul 8, 2008 at 12:38 PM, Stéphane PURNELLE
> <stephane.purnelle at corman.be> wrote:
>>
>> It's possible to have multiple same MAC address ?
>>
>> -----------------------------------
>> Stéphane PURNELLE                         stephane.purnelle at corman.be
>> Service Informatique       Corman S.A.           Tel : 00 32 087/342467
>>
>> dhcp-users-bounce at isc.org a écrit sur 08/07/2008 17:35:00 :
>>
>>> Glenn,
>>>
>>> It's not exactly what I need.
>>>
>>> My problem is: different machines which have the same MAC address but
>>> are in different subnets. They may have different configurations.
>>>
>>> Anyway, I tried to create a host entry with the parameter
>>> fixed-address using more than one IP, but it's not possible. OMAPI
>>> takes only the first argument.
>>>
>>> Any ideas?
>>>
>>> Thanks,
>>> Caciano Machado
>>>
>>> On Tue, Jul 8, 2008 at 12:00 PM, Glenn Satchell
>>> <Glenn.Satchell at uniq.com.au> wrote:
>>> >
>>> >>Date: Tue, 8 Jul 2008 11:47:44 -0300
>>> >>From: "Caciano Machado" <caciano at gmail.com>
>>> >>To: dhcp-users at isc.org
>>> >>Subject: OMAPI Host Object and Duplicate MACs in different subnets
>>> >>
>>> >>Hi,
>>> >>
>>> >>I have a problem with the following scenario:
>>> >>
>>> >>A central DHCP server and many subnets which forward the DHCP requests
>>> >>through DHCP relays. The central server is managed via OMAPI. We
>>> >>manage static hosts configurations using it.
>>> >>
>>> >>The problem occurs when a subnet has a duplicate address interface...
>>> >>ISC DHCP don't permit this situation using OMAPI even if the
>>> >>interfaces are in different subnets. OMAPI doesn't have a way to tell
>>> >>to DHCP in which subnet the host is located.
>>> >>
>>> >>Anyone has a solution to this problem?
>>> >>
>>> >>Regards,
>>> >>Caciano Machado
>>> >>
>>> > In dhcpd.conf it is legal to have more than one address in the
>>> > fixed-address statement.
>>> >
>>> > For example if you have one host which might need fixed addresses in
>>> > more than one subnet you can use:
>>> >
>>> > host mylaptop {
>>> >  hardware ethernet c:0:f:f:e:e;
>>> >  fixed address 192.168.1.1, 192.168.2.20, 192.168.50.99;
>>> > }
>>> >
>>> > Can you do this with omapi commands? Select using the mac address, then
>>> > add multiuple IP addresses?
>>> >
>>> > set ip-address = 192.168.1.1, 192.168.2.20, 192.168.50.99
>>> >
>>> > I'm not able to test this here, but it might be worth trying.
>>> >
>>> > regards,
>>> > -glenn
>>> >
>>> >
>>> >
>>>
>>
>