Is it possible to route between multiple IoTRs?
Is it possible to communicate with other SSN/Itron NICs, e.g. in meters?
From a NIC is a NIC is a NIC perspective, the IoTRs (in edge mode) should function like any other devices (e.g. meters) that have an SSN/Itron NIC in them. That being said, that is a set up that has never been field tested.
And similarly, yes, it is possible for an IoTR to communicate with other SSN/Itron NIcs and route through them.