The subscription filter policy protects your edge network by limiting Mapped Universal Gateway time series polling to specific Points or controller devices.
Contact support@mapped.com to request that specific device Ids or specific Points be either allowlisted or blocklisted. For Points, the Mapped Point Id or mappingKey is most helpful. For devices, Support needs to know the device BACnet Id.
In the future, we plan to release a self-service tool to grant customers direct control of the filter.
How does the subscription filter policy work?
Customers seeking to limit traffic on their network can block all entities by default and only allow specific devices/Points to be polled. Alternatively, customers can allow all entities by default but only block select devices/Points.
Here are the expected effects on telemetry with each option:
| Entity | Allowed or Blocked | Effect on time series |
|---|---|---|
| Controller / BACnet device | Allowed | All child Points under this device will be included in the regular 15-minute interval time series poll. Trending Points should update every 15 minutes. |
| Point | Allowed | This Point will be included in the regular 15-minute interval time series poll. if the Point is trending in the source, it should update every 15 minutes. |
| Controller / BACnet device | Blocked | All child Points under this device will be excluded from the regular 15-minute interval time series poll. If Points were previously discovered, trending Points may only update on the weekly device discovery scan. |
| Point | Blocked | This Point will be excluded from the regular 15-minute interval time series poll. If the Point was previously discovered and is trending in the source, it may only update on the weekly device discovery scan. |
About Mapped Universal Gateway scanning
The Mapped Universal Gateway scans for devices, retrieves their objects and points, and continuously polls for timeseries data:
- Device discovery: Every seven days, the Gateway walks all IPs on the network. For each device that responds on the BACnet protocol, the Gateway performs a device scan.
- Device scan: Once a device or controller is discovered, the Gateway asks the device for all of its objects, at a default interval of 24 hours. For each object, it requests its points and all the point's properties, including additional information such as make, model, and firmware.
- Time series polling: For all discovered devices, objects, points and properties that are of time series type, Mapped Universal Gateway asks the device for the current value of each time series property, at a default interval of 15 minutes. The subscription filter policy allows or blocks devices/points from this poll.