Verify that the device is configured to receive and transmit TCP and UDP RPM probes on the correct ports.
From the CLI, enter the show services rpm active-servers command.
user@host> show services rpm active-servers
Protocol: TCP, Port: 50000
Protocol: UDP, Port: 50037
The output shows a list of the protocols and corresponding ports for which the device is configured as an RPM server.
For a complete description of show services rpm active-servers output, see the JUNOS System Basics and Services Command Reference.