Configuring option 82

Surya Teja suryateja042 at gmail.com
Thu Sep 26 14:12:19 UTC 2019


Hi is the option 82 supported by using class concept only ?
or can it be defined as other general options like domain-name server,
router in scope section ?

On Tue, Sep 24, 2019 at 12:49 PM Surya Teja <suryateja042 at gmail.com> wrote:

> Hi,
> I am trying to configure the dhcp option 82, went through the google
> forums and one of it suggest the syntax like
> # vim /etc/dhcp/dhcpd.conf
> ########################################################
> log-facility local7;
>
>
>
>
>
>
> *class "VLAN10" {        match if
> binary-to-ascii(10,16,"",substring(option agent.circuit-id,2,2)) = "10";} #
> VLAN10class "VLAN20" {          match if ( substring(option
> agent.remote-id,2,15)="10.5.20.4" and binary-to-ascii(10, 16,
> "",substring(option agent.circuit-id, 4, 2)) = "2" ); }*
> subnet 192.168.10.0 netmask 255.255.255.0 {
>         pool {
>                 *allow members of                "VLAN10";*
>                 default-lease-time               600;
>                 max-lease-time                    7200;
>                 range                           192.168.10.1
> 192.168.10.199;
>                 option routers                  192.168.10.254;
>                 option broadcast-address        192.168.10.255;
>                 option subnet-mask              255.255.255.0;
>                 option domain-name-servers      4.2.2.2;
> }
> }
> subnet 192.168.20.0 netmask 255.255.255.0 {
>         pool {
>        * allow members of                "VLAN20";*
>         default-lease-time              600;
>         max-lease-time                  7200;
>         range                           192.168.20.20 192.168.20.199;
>         option routers                  192.168.20.254;
>         option broadcast-address        192.168.20.255;
>         option subnet-mask              255.255.255.0;
>         option domain-name-servers      4.2.2.2;
>
> }
> (Just ignore ip values)
> can we configure this concept only by using classes and make it allow or
> deny like that?
> or can we use the option space concept to get it worked(do we have any
> other syntax). Thanks in advance
>
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