I’m looking to add a fallback WAN in the form of an LTE modem to my existing home network which consists of an RB4011 using PPPoe for WAN and 3 hAP ac2-s and 1 wAP ac (the ARM version) all managed via CAPsMAN. Since the 4011 is in the basement and it doesn’t support miniPCIe modems anyway, I was thinking that perhaps replacing the wAP ac with an LTE version would do the trick without any extra cabling, however I’m not sure what would be the right way to set the LTE wAP ac as the new default gateway for the RB4011 in case the PPPoe goes down. Is this something anybody tried before? Or should I just bite the bullet and eg. connect a raspberry pi with a USB LTE modem (or something else that’s wired) to one of the Ethernet ports and set up a regular dual wan failover.
I have 3 VLANs on 4 different SSID-s and the RB4011 is the default gw & dns for all.
For you, setting the LTE on the wAP ac into “passthrough mode” might be the best option - that way, the 4011 would get yet another WAN, and you’d use VLANs to sort things out on a single cable. And of course the multi-WAN failover is necessary no matter how exactly your second WAN is implemented.
Thanks but if I understand correctly, passthrough mode would disable CAPsMAN (since the Ethernet ports are bridged and look for CAPsMAN on the bridge on L2) unless you mean to set the passthrough interface to a vlan interface (in addition to moving the CAPsMAN traffic to another vlan as well)?
Edit: just to clarify I would like to have both CAP and the 2nd WAN on the wAP ac.
One VLAN may be tagless on the bridge & wire, but also the CAP can talk to the CAPsMAN over IP, not just via L2. So yes, I’d use the VLAN which would be tagged on the bridge as the passthrough interface, but you may as well let the CAP talk to the CAPsMAN via a subnet hosted in the tagged VLAN and let the bridge itself (the tagless VLAN) be the passthrough interface for the LTE.