TCP Statistics workspace
The TCP Statistics workspace displays TCP protocol statistics for
the selected the TCP/IP stack on a z/OS v1.12 or later system.
Note: This workspace is available only on
systems running on z/OS v1.12 or later.
To display the TCP Statistics workspace, do the following steps:
- Click the TCP/IP Stack Layers Navigator
item.
- Right-click the TCP/IP Stack Layers Navigator
item.
- Click TCP Statistics.
The TCP Statistics workspace provides the following views:
- Flow Control: Displays attributes that
affect flow control for window problems and updates. The information
is presented in a bar graph where:
- Yellow represents Total Input Window Probes.
- Blue represents the Total Input Window Updates.
- Pink represents the Total Output Window
Probes.
- Green represents the Total Output Window
Updates.
- Packets Dropped: Displays attributes that
describe the reasons why packets are being dropped. The information
is presented in a bar graph where:
- Yellow represents Total Discards for Bad
Checksum.
- Blue represents Total Discards for Bad Length.
- Pink represents Total Discards for Length
Too Short.
- Green represents Total Discards for Old
Timestamp.
- Turquoise represents Total Segments Discarded
- Orange represents Total Passive Drops.
- Dropped Connections: Displays attributes
that describe the reasons why connections are being dropped. This
information is presented in a bar graph where:
- Yellow represents Total Established Resets
- Blue represents Total Attempt Failures.
- Pink represents Total Window Probe Drops
- Green represents Total Output RSTs.
- Turquoise represents Total Retransmit Drops
- Dark Blue represents Total Keepalive Drops.
- Purple represents Total FINWAIT2 Drops.
- TCP General and Dropped Connections Statistics Summary table: Displays
TCP connection statistics related to both general connection statistics
and statistics indicating connections that were not shut down gracefully.
- TCP Network Statistics Summary table: Displays
statistics that indicate a problem in the network on a z/OS V1.12
or later system.
- TCP Flow Control and Packet Drops Statistics Summary table: Displays
statistics related to dropped packets and application pacing on a
z/OS V1.12 or later system.
- TCP Statistics Summary table: Displays
statistics about the data flowing over TCP on a z/OS V1.12 or later
systems.
TCP General and Dropped Connections Statistics Summary table
The TCP General and Dropped Connections Statistics Summary table
displays TCP connection statistics related to both general connection
statistics and statistics indicating connections that were not shut
down gracefully.
For explanations of the attributes available in the TCP General
and Dropped Connections Statistics Summary table, and a brief description
of each, see the KN3 TCP Counter Statistics Attributes help panel.
TCP Network Statistics Summary table
The TCP Network Statistics Summary table displays statistics that
indicate a problem in the network on a z/OS V1.12 or later system.
For a explanations of the attributes available in the TCP Network
Statistics Summary table, and a brief description of each, see the KN3 TCP Counter Statistics Attributes help panel.
TCP Flow Control and Packet Drops Statistics Summary table
The TCP Flow Control and Packet Drops Statistics Summary table
displays statistics related to dropped packets and application pacing
on a z/OS V1.12 or later system.
For an explanation of the attributes available in the TCP Flow
Control and Packet Drops Statistics Summary table, and a brief description
of each, see the KN3 TCP Counter Statistics Attributes help panel.
TCP Statistics Summary table
The TCP Statistics Summary table displays statistics about the
data flowing over TCP on a z/OS V1.12 or later systems.
For a complete list of the attributes available in the TCP Statistics
Summary table, and a brief description of each, see the KN3 TCP Counter Statistics Attributes help panel.
See also: