Hi,

I'm using WAN1 and WAN2 on my Vigor2927. WAN1 is connected to my FTTP ONT. WAN2 is connected to my older Vigor2860, which is connected to my old VDSL2 line (I'm basically using my old Vigor2860 as a modem, using PPPoE Pass-through).

My network has 3 separate VLANs; Private, IoT & Guest. Private is routed to WAN1, and IoT & Guest are routed to WAN2. I do this using rules on the Load-Balance/Route Policy page on the Vigor2927.

Load balancing is not enabled.

The problem I have is that many devices on my IoT network stop working when routed to WAN2. In particular, my Nest Thermostats and Samsung SmartHub stop working. If I connect my phone (Galaxy S10) to the IoT network, it works fine. If I switch everything back to WAN1, then everything starts working again.

I'm running the latest 4.2.2 firmware on the Vigor2927. Referring to the picture in the attached link, if I enable Index 2, the internet connection for my IoT devices (Nest thermostats in particular) become unreliable. Any thoughts on what might be going wrong?

http://files.skidog.co.uk/index.php?dir=Router/&file=WAN%20Routing.JPG