VLAN and fixed IPs

[Patrick Trapp]

Seconding Christian's suggestion if your relay agent will support it. 

-----Original Message-----
From: dhcp-users [mailto:dhcp-users-bounces at lists.isc.org] On Behalf Of Christian Kratzer
Sent: Thursday, September 28, 2017 4:48 AM
To: Users of ISC DHCP <dhcp-users at lists.isc.org>
Subject: Re: VLAN and fixed IPs

Hi,

On Thu, 28 Sep 2017, Jan Lundmark wrote:
>
>
>
> Hi,
>
> 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.
>
> 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.
<snipp/>

dhcp snooping on some switches is able to insert realay agent options into packets passing by even in pure l2 environments.

You can then assign fixed ip based on option82 circuit-id or remote-id options.

Greetings
Christian

-- 
Christian Kratzer                   CK Software GmbH
Email:   ck at cksoft.de               Wildberger Weg 24/2
Phone:   +49 7032 893 997 - 0       D-71126 Gaeufelden
Fax:     +49 7032 893 997 - 9       HRB 245288, Amtsgericht Stuttgart
Mobile:  +49 171 1947 843           Geschaeftsfuehrer: Christian Kratzer
Web:     http://www.cksoft.de/
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