VLAN and fixed IPs

[José Queiroz]

Why don't you give your devices a loooong lease, so the addresses get fixed
to the devices, once assigned?



2017-09-28 6:33 GMT-03:00 Jan Lundmark <jan.lundmark at guidelinegeo.com>:

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> Hi,
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> We have an application where we want the clients to  have fixed IPs and
> that the clients are all on the same *subnet*.
>
> It is not practical for our application to use the MAC adresses of the
> clients.
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> This configuration below will assign a somewhat fixed IP based on the VLAN
>  subnets but it is not exactly what we want.
>
> The point is that we want each client to receive a fixed IP address based
> on their port in the switch.
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> /etc/network/interfaces:
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> # VLAN 2
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> iface eth0.2 inet static
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> address 192.168.5.1
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> netmask 255.255.255.0
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> vlan_raw_device eth0
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> # VLAN 3
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> iface eth0.3 inet static
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> address 192.168.6.1
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> netmask 255.255.255.0
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> vlan_raw_device eth0
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> /etc/dhcp/dhcpd.conf
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> # VLAN 2DHCP
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> subnet 192.168.5.0 netmask 255.255.255.0 {
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>                 range 192.168.5.50 192.168.5.200;
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> }
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> # VLAN 3
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> subnet 192.168.6.0 netmask 255.255.255.0 {
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>                 range 192.168.6.50 192.168.6.200;
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> }
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> So, my question is:
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> Is there a way to assign fixed IP(v4) adresses in dhcpd.conf to clients
> based on their VLAN membership instead of their subnet?
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> Regards
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> Jan
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>
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