I have this one switch continually marked as Undefined in NPM because of this "Overall Hardware Status has state: Could not poll" error. However, the switch passes all of the UDT compatibility checks through the compatibility checker on the server. It also - obviously - passes the SNMP test when editing the node. It appears in NPM with ports listed, attached MAC addresses, all of the CPU, memory, and other graphs have data. In short, it appears normal. So why the error message?