Packet trace (SYSTCPDA) for TCP/IP stacks

Packet trace is a diagnostic method for obtaining traces of IP packets flowing to and from a TCP/IP stack on a z/OS® Communications Server host. You can use the PKTTRACE statement to copy IP packets as they enter or leave TCP/IP, and then examine the contents of the copied packets. To be traced, an IP packet must meet all the conditions specified on the PKTTRACE statement.