For anybody interested on SRM 1.3 I'm using Dual WAN and I've created three networks with corresponding Port and Ethernet.
The 4 ethernet ports are a bit sticky to assign, but eventually I did it
WAN1 The main wan is Cable 80MBps Comcast
Port1 - Wan2 which goes to a DSL line 8Mbps
Port2 - Primary Trunk and built in Network1
The built-in Guest Network2 doesn't seem to allow a port to be allocated, but can be turned off and
Network3 Guest2 created for wifi and also include
Port 3
and finally Network4 IoT reated with WiFi and also include
Port 4
I use Guest2 plus ethernet extension to another Router in a rental unit
And have IoT for a number of ethernet devices (enphase solar power) as well as WiFI (sensors Purpleair).
The 4 ethernet ports are a bit sticky to assign, but eventually I did it
WAN1 The main wan is Cable 80MBps Comcast
Port1 - Wan2 which goes to a DSL line 8Mbps
Port2 - Primary Trunk and built in Network1
The built-in Guest Network2 doesn't seem to allow a port to be allocated, but can be turned off and
Network3 Guest2 created for wifi and also include
Port 3
and finally Network4 IoT reated with WiFi and also include
Port 4
I use Guest2 plus ethernet extension to another Router in a rental unit
And have IoT for a number of ethernet devices (enphase solar power) as well as WiFI (sensors Purpleair).