Trace-route message format

Trace-route messages are standard WebSphere MQ messages containing a message descriptor and message data. The message data contains information about the activities performed on a trace-route message as it has been routed through a queue manager network. For information on trace-route messaging, see Trace-route messaging.

Trace-route messages contain the following:

A message descriptor

An MQMD structure, with the Format field set to MQFMT_ADMIN or MQFMT_EMBEDDED_PCF.

Message data

Consists of either:

  • A PCF header (MQCFH) and trace-route message data, if Format is set to MQFMT_ADMIN, or

  • An embedded PCF header (MQEPH), trace-route message data, and additional user-specified message data, if Format is set to MQFMT_EMBEDDED_PCF.

When using the WebSphere MQ display route application to generate a trace-route message, Format is set to MQFMT_ADMIN.