PPPoE over a routed network

Hi,
We have a routed network with about 700 customers. We are looking to implement a PPPoE server, which would ideally be located at our central pop.
I realise that the PPPoE packets will not cross our routers - we are currently replacing them all with routerboard devices - is the way to go to implement OSPF/MPLS so that I can pass the Layer 2 PPPoE broadcast traffic to our server.
Just looking for some guidance / pointers..

Cheers,

Ade

EoIP tunnels and VPLS tunnels. As of late, VPLS are the preferred method.

why does you centralize pppoe server instead of activate pppoe server on each access point ?

I have same setup. I use EoIP but planning to go to VPLS. I have my network routed with private IP addresses and I don’t want that my customers see my internal setup and I want to have everything in one place instead of lot’s of boards across network. If I need to change something, I would change it only on central server. There is lot of pluses and minuses for both designs…

I use VPLS for a long time now with PPPoE to a core PoP. Works great.

do you use ospf or bgp?

What is your MTU?

Do you bridge VLANs to VPLS on your client access devices? How much traffic do you run?