request for advice / building dhcpd infraestructure

[Leandro]

Thank you Bob , I will try !!
Leandro.

On 23/06/15 13:14, Bob Harold wrote:
>
>
> On Tue, Jun 23, 2015 at 11:54 AM, Leandro <ingrogger at gmail.com 
> <mailto:ingrogger at gmail.com>> wrote:
>
>     Hello dhcpd users:
>     Im planning to manage a /17 network using isc dhcpd. I would like
>     to briefly describe my plan so I can get any comments/advices 
>     from the list.
>     My dhcp server will receive requests from approximately 20 relay
>     agents from 3 different access technology.
>     I dont know in advance behind wich relay will be most ip usage
>     since I can not predict witch service will grown over the others.
>     In order to be able to be flexible with ip pools management, Im
>     thinking on:
>
>         Create a class per each agent.circuit-id
>         Subneting the  /17 in /24 subnets
>         Create a pool declaration per each subnet.
>         Add / Delete "allow members of" statements within the pool
>     declaration to bind a relay-agent with one or multiple pool
>
>     I also would like to create a default class just in case I can not
>     get the option 82 info from some relay-agent, I dont know how to
>     do it yet.
>     It would be for example with 3 class and 3 pools:
>
>     #########################################
>     class "fth_clients" {
>                     match if option agent.circuit-id = "fth_relay";
>                 }
>
>     class "adsl_clients" {
>                     match if option agent.circuit-id = "adsl_relay";
>                 }
>
>     class "default_clients" {
>                     match if option agent.circuit-id = "";  #need to
>     confirm
>                 }
>
>
> If it does not work as written, then maybe you could try:
>     match if not(  option agent.circuit-id = "fth_relay" or option 
> agent.circuit-id = "adsl_relay" );
> (That does not scale well, but should work for a small number of classes.)
>
> -- 
> Bob Harold
>
>
>
>     shared-network my_pool {
>             subnet 1.1.1.0 netmask  255.255.128.0 {
>
>             #1.1.1.0/24 <http://1.1.1.0/24> for all clases
>             pool {
>                 range 1.1.1.2 1.1.1.254;
>                 option broadcast-address 1.1.1.255;
>                 option subnet-mask 255.255.255.0;
>                 option routers 1.1.1.1;
>                 allow members of "fth_clients"
>                 allow members of "adsl_clients"
>                 allow members of "default_clients"
>             }
>
>             #1.1.2.0/24 <http://1.1.2.0/24> only for adsl_clients
>             pool {
>                 range 1.1.2.2 1.1.2.254;
>                 option broadcast-address 1.1.2.255;
>                 option subnet-mask 255.255.255.0;
>                 option routers 1.1.2.1;
>                 allow members of "adsl_clients"
>             }
>
>        }
>     }
>
>     ###################################33
>     Any comment / Advice will be accepted,
>     Thanks!!!
>     Leadro.
>
>
>
>
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