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 This time line graph shows a historical
view of the number of active TCP sessions for the specified time period.
- Fragmentation and Reassembly. This time line chart
shows a historical view of the packet fragmentation and reassembly operation
for the specified time period 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. This time line chart shows
a historical view of TCP connections accepted by the stack layer and the connections
accepted high-water mark for the specified time period, where:
- Yellow represents the TCP connections accepted
- Blue represents the TCP connections accepted high-water mark
- TCP Connections Dropped. This time line chart shows
a historical view of TCP connections dropped during the specified time period.
- UDP Datagram Rate. This time line chart compares
the number of input and output datagrams for this TCP/IP stack layer over
the specified time period, where:
- Dark blue represents the UDP receive datagram rate
- Light blue represents the UDP transmit datagram rate
- TCP/IP Stack Layers Summary History Table. This
summary 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: