1 TCPIPTRACEStarts the UCX$TRACE utility. Format /BUFFERS=n /FULL TCPIPTRACE host /OUTPUT /PACKETS=n /PORT=option /PROTOCOL=option 2 Parameters host Required. Remote host to which you are sending packets for tracing. 2 Qualifiers /BUFFERS /BUFFERS=n Optional. Default: 100. Number of buffers that UCX$TRACE allocates for temporary storage. These buffers must be locked into the process working set, so you may have to decrease the number to accomodate the working set size or increase the number to prevent UCX$TRACE from dropping packets. /FULL Optional. Default: Brief display. Displays the packet contents. /OUTPUT Optional. Default: Screen display. Redirects the trace output to a file. If you specify a file name that already exists, UCX$TRACE appends new trace information to the existing file. /PACKETS /PACKETS=n Optional. Default: 10. Stops the trace after UCX$TRACE displays the specified number of packets. /PORT /PORT = LOCAL = n REMOTE Optional. Default: Trace all port numbers. Specifies the local or remote port number to trace. Use in conjunction with the /PROTOCOL qualifier to filter tracing to an exact port and protocol. /PROTOCOL ARP ICMP /PROTOCOL = IP TCP UDP Optional. Default: IP Specifies the protocol to trace. Use in conjunction with the /PORT qualifier to filter tracing to an exact port and protocol. 2 Examples 1.$ TCPIPTRACE HOST1 /FULL /PORT=REMOTE=21 Traces packets for host HOST1 and remote port number 21. UCX$TRACE provides a full display of the packets contents. 2.$ TCPIPTRACE HOST2 /FULL /PORT=(LOCAL=23, REMOTE=1056) - _$ /PACKETS=30 /OUTPUT=TELNET_TRACE.TXT) Traces packets for host HOST2 with a local port of 23 and remote port number of 1056. UCX$TRACE provides a full display of the packets contents. UCX$TRACE continues the trace for 30 packets and writes the output to the file TELNET_TRACE.TXT in the current directory.