TCP/IP Summary workspace

The TCP/IP Summary workspace is a multi-pane workspace that shows the general health and activity of the TCP/IP stack. It provides performance data for the TCP layer of a z/OS(R) Communications Server TCP/IP protocol stack that is running in z/OS system images. A TCP/IP protocol stack is uniquely defined within a z/OS system image by the TCP/IP job name and the fully qualified host name or IP address. The TCP/IP Summary workspace is displayed when the TCP/IP Navigator icon for a monitored stack is selected.

An alternate workspace is the TCP/IP Summary History workspace, which displays historical performance data for the layers of the TCP/IP stack during the specified time period. This workspace displays the most recent 24 hours of historical data by default. This workspace can be displayed by right-clicking on the TCP/IP Navigator icon for a monitored stack. For more information, see TCP/IP Summary History workspace.

Note: If the address space being monitored is running on z/OS v1.11 or earlier, the values for this attribute group are retrieved using SNMP. If the address space being monitored is running on z/OS v1.12 or later, the values for this attribute group are retrieved using the z/OS Communications Server callable network management interface (NMI).

The TCP/IP Summary workspace contains the following views:

  • Resource Summary: Displays the count of TCP/IP resources by type in a bar chart, where:
    • Yellow represents the Gateway Count.
    • Blue represents the Connection Count.
    • Pink represents the Application Count.
    • Green represents the Device Count.
    • Turquoise represents the Telnet Connection Count.
    • Orange represents the Interface Count.
  • Traffic Summary: Displays the count of TCP/IP resources by type in a bar chart, where:
    • Yellow represents the Input Segment Count.
    • Blue represents the Output Segment Count.
    • Pink represents the TCP Input Segment Count.
    • Green represents the TCP Output Segment Count.
    • Turquoise represents the UDP Input Datagram Count.
    • Orange represents the UDP Output Datagram Count.
  • Discard Percentages: Provides the following data in a line chart, where:
    • Yellow represents the Input Discard Percentage.
    • Blue represents the Output Discard Percentage.
    • Pink represents the UDP Discard Percentage.
  • Fragmentation Percentages: Provides the following data in a line chart, where:
    • Yellow represents the Fragmentation Percentage.
    • Blue represents the Fragmentation Failure Percentage.
  • Reassembly Percentages: Provides the following data in a line chart, where:
    • Yellow represents the Reassembly Percentage.
    • Blue represents the Reassembly Failure Percentage.
  • Retransmission Percentages: Shows the percentage of TCP segments retransmitted over time in a line graph.
  • Throughput Rate: Shows the byte rate, or number of bytes received or sent, per minute, over time in a line graph.
  • TCP/IP Summary table: Displays the TCP/IP Summary attributes that can be used to view information about TCP/IP stack conditions, find and fix problems in your network, or create situations that monitor information for a selected TCP/IP stack.