1 Running_TRACE The TRACE utility provides the Common Trace Facility command interface that allows you to collect and display information that passes between protocol layers in a network. CTF commands allow you to start tracing data, stop tracing, and display an analysis of the traced information. The following process privileges are required to use CTF: ALTPRI, BYPASS, CMKRNL, NETMBX, PRMGBL, PRMMBX, PSWAPM, SYSGBL, SYSLCK, SYSNAM, TMPMBX, WORLD To run the TRACE utility, enter the command: TRACE The prompt CTF> will appear, indicating that you may enter CTF commands. Alternatively, you can enter a CTF command directly from DCL: TRACE command-string 2 About_CTF 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. 2 Rights_Identifiers To trace data on a local system or a remote server, you must hold specific rights identifiers in the rights database of the node you are invoking CTF from. These rights identifers are: NET$TraceHeaders - trace protocol header information on local node NET$TraceAll - trace protocol header and data on local node NET$TraceHeadersRemote - trace protocol header info on remote server NET$TraceAllRemote - trace protocol header and data on remote server The difference between NET$TraceHeaders and NET$TraceAll is that NET$TraceAll will allow you to see the user data portion of the protocol data unit, which may contain sensitive or private information. These rights identifiers must be granted through the Authorize utility: $ SET DEFAULT SYS$SYSTEM $ RUN AUTHORIZE $ GRANT/ID