Troubleshooting the sensor

This topic describes common problems that occur with the Port sensor and presents solutions for those problems.

The sensor does not discover any open UDP ports

Problem: When discovering the endpoint ports, the sensor does not find any open UDP ports.

Solution: You must configure the properties that are responsible for the discovery over the UDP protocol. For more information about those properties, see Configuring the collation.properties file. The Ping sensor and the Port sensor use the same properties for discovery over the UDP protocol.; To retrieve information about open UDP ports, the Port sensor uses the SNMP protocol to query the discovery endpoints. Make sure that the proper SNMP or SNMPv3 authentication credentials are provided in the Agile Service Manager access list. You can also verify if your firewall passes the network traffic through the ports that are specified in the com.ibm.cdb.discover.pingUDPPorts property.