snmpcollector device discovery is not working. Error: Could not find discovery_server probe at /Domain_hub/Hub_name/hubrobot/discovery_server
Ensure the address is correct, and that the discovery_server probe is running.
One character in the address was a different case.
Corrected the discovery _server path via the Admin Console -> SNMP configuration to point to the correct discovery_server address which is on the Primary hub.