SV: agent.circuit-id (Option-82,2) map to fixed-address
Lars Jacobsen
lj at sydfynsel.dk
Thu Mar 29 08:27:31 UTC 2007
Hello Henrik
Have a look at www.strammelse.dk/dhcp/ where I posted a solution on how we did it.
Othervice mail me off list, or call me
Lars Jacobsen
Sydfyns Elforsyning
> -----Oprindelig meddelelse-----
> Fra: dhcp-users-bounce at isc.org [mailto:dhcp-users-bounce at isc.org] På vegne
> af Henrik Sterndorff Jessen
> Sendt: 29. marts 2007 08:29
> Til: dhcp-users at isc.org
> Emne: agent.circuit-id (Option-82,2) map to fixed-address
>
> I am using dhcp to dish out fixed addresses to users. All users are
> connected to cisco switch ports that act as a relay and therefore add
> option-82 information to the dhcp query.
>
>
> But I would like to provision the dhcp server so each switch port (and
> therefore each user) is assigned a predefined fixed address.
>
>
>
> That requires that I can map the agent.circuit-id to a fixed address.
> "host" entries does not work since I don't know the mac address of the
> end users.
>
>
>
> But I have spend hours on end reading man pages and googling for a way
> to do this. Please help me.
>
>
>
> The only work around I have found is using pools and user groups:
>
>
>
> class "user-john" {
>
> match option agent.circuit-id;
>
> }
>
>
>
> subclass "user-john" 00:04:00:5C:03:04; # This is the cisco switch
> option-82 addition.
>
>
>
> subnet 10.0.0.0 netmask 255.255.255.0 {
>
> pool {
>
> allow members of "user-john";
>
> range 10.0.0.10 10.0.0.10;
>
> log (info, "subnet hit");
>
> }
>
> }
>
>
>
> This seems to work. But I am not shure this scales to 10.000's of users.
>
>
>
> Thanks in advance
>
> Henrik
>
>
>
>
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