- Packet is malformed (it’s gibberish).
- On MS/TP, it typically means the packet was clobbered by the network (poor wiring).
- On IP, it can be bad wiring or electrical influence on the wire.
- Not a BACnet router problem, it’s a physical router problem. The actual router itself is failing, or perhaps you have loose cable, or power fluctuations.
Why it fails
- Bad wiring
- Failing devices (overheating, old, internal electronic problems, etc.)
- Power fluctuations
How to fix it
- Use the Source and Destination devices to Isolate the path
- Check if other destinations have received “normal” packets from the source
- Look at other destinations with checksum errors to isolate the problem switch or wire
- If it’s a switch, replace it
- If it’s a wire, test and replace it
Watch us troubleshoot checksum errors in this live webinar on a hospital site. Skip ahead to 15:30 for the checksum errors diagnostic check.