CTF provides user commands that allow you to:

 o  Start and stop the collection of protocol information from specified
    points within networking software, called tracepoints.  Each time
    data is collected at a tracepoint, it is stored in a trace record.

 o  Display the collected trace information on your terminal, or save
    it in a trace file for later analysis.

 You can collect protocol data from networking software running on the
 local VMS system or on remote servers. Note, however, that you cannot
 collect protocol data from remote VMS systems.