NAT, PPPoE y VLAN

Hola,
Aca en una zona rural tenemos un proyecto de acceso a internet usando las radios 450i y 450b. La topologia actual para la conexión al servicio de internet es:

ISP <> GATEWAY <<>> vlan 20 (gestion) <> PMP 450i (vlan 20) <> PMP 450b (vlan 20)
       MICROTIC <<>> vlan 50 (datos) <> PMP 450i/450b <> Router Wifi (Vla50/DHCP)<>Usuario

De esta forma en la vlan 20 se gestiona los equipos PMP y en la vlan 50 se usa como un tunel desde el router wifi del usuario al mikrotic. Esta topología esta funcionando correctamente.
Sin embargo por necesidad de crecimiento, quisieramos saber si es posible que el 450b cumpla la funcion del router del usuario, dado que revisando en su configuración veo que soporta NAT, DHCP y PPPoE. Es decir la topologia quedaría como:

ISP <> GATEWAY <<>> vlan 20 (gestion) <> PMP 450i (vlan 20) <> PMP 450b (vlan 20)
       MICROTIC <<>> vlan 50 (datos) <> PMP 450b  (vlan 50,NAT, PPPoe,dhcp) <>Usuario

El tema es como configurar correctamente el NAT, la configuracion IP entre la WAN y LAN que deberia del 450 b y asignar la red de la WAN a la vlan 50.

A la espera de sus comentarios.

Saludos.


Google Translate:

Hello,
Here in a rural area we have an internet access project using 450i and 450b radios. The current topology for the connection to the Internet service is:

ISP <> GATEWAY <<>> vlan 20 (management) <> PMP 450i (vlan 20) <> PMP 450b (vlan 20)
       MICROTIC <<>> vlan 50 (data) <> PMP 450i/450b <> Wifi Router (Vla50/DHCP) <> User

In this way, in vlan 20 the PMP equipment is managed and in vlan 50 it is used as a tunnel from the user’s Wi-Fi router to the mikrotic. This topology is working correctly.
However, due to the need for growth, we would like to know if it is possible for the 450b to fulfill the function of the user’s router, given that by reviewing its configuration I see that it supports NAT, DHCP and PPPoE. In other words, the topology would look like:

ISP <> GATEWAY <<>> vlan 20 (management) <> PMP 450i (vlan 20) <> PMP 450b (vlan 20)
       MICROTIC <<>> vlan 50 (data) <> PMP 450b (vlan 50,NAT, PPPoe,dhcp) <>User

The topic is how to correctly configure NAT, the IP configuration between the WAN and LAN that should be 450 b and assign the WAN network to vlan 50.

Waiting for your comments.

Greetings.

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