Using IP packet trace

Use IP packet trace to identify the flow of data between the client program and the Listener and IMS™ transaction servers. TCP packets can be traced on the socket connections established through the Listener-reserved port. If the IP address of the client program is specified, only packets originating from or destined to the client program are traced. Specifying this parameter is recommended to avoid tracing a large number of unrelated TCP packets.

Restriction: When using X.25 devices to provide the network to the client program, the IP packet trace facility must be activated from the individual device address spaces. The previous example only activates tracing in the TCP/IP address space.

See TCP/IP services traces and IPCS support for details about how to use the IP packet trace facility.

The packets that contain data display the data in hexadecimal digits and, in this case, their EBCDIC characters. The numeric fields in the message segments can be verified from the hexadecimal representation, while any alphabetic data can be verified from the EBCDIC display.