Hello. My name´s Pedro Dominguez and I works in Vivacable engineering department. Vivacable is a FTTH and wireless ISP from the South of Spain, with around 15000 customers. In wireless networks we started to use Cambium ePMP devices around three years ago. We have around 700 ePMP CPEs deployed.
We configure ePMP CPEs in NAT mode and we use PPPoE at them. ePMP CPEs are connected through a bridged network (layer 2) to Mikrotiks PPPoE servers, using Radius authentication. In the bridged network we use different manufacturers devices, Cambium, Ubiquiti, Mimosa,.... We use Spanning Tree in order to have rings for redundancy, but it doesn´t work fine at all.
In the engineering department we are studying the possibility to use L2TP instead off PPPoE . The idea is to be able to have a routed network (layer 3) between ePMP CPEs and Mikrotiks L2TP servers, in order to be able to use layer 3 redundancy protocols.
The key question is if Cambium has in his roadmap to include a L2TP client in ePMP CPEs. For the moment we are testing this L2TP topology using Cambium CPEs in bridge mode and running L2TP in TPLink customer routers (after Cambium CPEs). But this way requires to allocate Cambium CPEs with management IPs (instead of public IPs), and complicates a lot the network management.
Thank you very much and best regards,
VIVACABLE, dpto Ingenieria
Avda. del Comercio 41-43, PI Poliviso
41520 El Viso del Alcor – Sevilla
0034 672 240 542