TCP/IP Stack Layers History Workspace
The TCP/IP Stack Layers History workspace displays historical performance
data for the layers of the TCP/IP stack.
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 Stack Navigator item.
Short Term History support is an optional feature that must be
enabled for this workspace to display attribute and metric values.
If this workspace does not contain data, you will see message KFWITM220E
Request failed during execution displayed in the Tivoli Enterprise
Portal message area. Contact your system administrator to request
that historical collection be started for this attribute group.
The following views provide information in this workspace:
- TCP Session Count: Shows a historical view
of the number of active TCP sessions for the specified time period
in a line graph.
- Fragmentation and Reassembly: Shows a historical
view of the packet fragmentation and reassembly operation for the
specified time period in a time-line chart where:
- Yellow represents the reassembly percentage.
- Blue represents reassembly failure percentage.
- Pink represents the fragmentation percentage.
A high fragmentation or reassembly rate indicates that an adjacent
device, such as a router, may have a too small window size.
- TCP Connections Accepted: Shows a historical
view of TCP connections accepted by the stack layer and the connections
accepted high-water mark for the specified time period in a time-line
chart, where:
- Yellow represents the TCP connections accepted.
- Blue represents the TCP connections accepted
high-water mark.
- TCP Connections Dropped: Shows a historical
view of TCP connections dropped during the specified time period in
a time-line chart.
- UDP Datagram Rate: Compares the number of
input and output datagrams for this TCP/IP stack layer over the specified
time period in a time-line chart, where:
- Blue represents the UDP receive datagram
rate.
- Green represents the UDP transmit datagram
rate.
- TCP/IP Stack Layers Summary History Table:
Provides detailed performance information about the TCP/IP stack layers
displayed in the charts on the TCP/IP Stack Layers workspace.
TCP/IP Stack Layers Summary History Table
The TCP/IP Stack Layers Summary History table provides detailed
performance information about the TCP/IP stack layers displayed in
the charts on the TCP/IP Stack Layers workspace for the specified
time period.
The attributes displayed in the history workspaces represent a
subset of the attributes supported by the TCP/IP Stack Layers workspace
(for enhanced performance). For a complete list of the attributes
available in the TCP/IP Stack Layer History Summary Table, and a brief
description of each, see the TCP/IP Stack
Layer Attributes help panel. Because this is a history panel,
a unique attribute is listed in addition to the Interfaces attributes:
- Recording Time: The time and date of the
data sampling. Recording time displays the exact collection interval
boundary (such as every 00:15:00 minutes). This value is displayed
in the following format:
mm/dd/yy hh:mm:ss
Where:
- mm = Month
- dd = Day of the month
- yy = Year
- hh = Hour
- mm = Minute
- ss = seconds
See also: