HP StorageWorks 2.140 Director Switch - Manual (Page 103)

Monitoring and managing the Director
101 Director Element Manager User Guide
Port Statistics
To choose and display more detailed performance information for a port, click the
port’s bar graph. The bar graph for that port highlights with a darker background,
and the lower portion of the Performance View panel displays the statistics values
for the port’s number and the WWN decoding.
The Statistics Values tables include values for the following categories:
■ Class 2 Statistics
■ Class 3 Statistics
■ Error Statistics
■ Operational Statistics
■ Traffic Statistics
Click a category in the left frame of the statistics area to display only statistics for
that category or click All to display values for all categories.
Note: There are not thresholds for these values. You may determine that a problem
exists by the rate that the value changes. For example, low BB_Credit can occur if data
is sent to a device faster than it can consume the frames. This can backup into ISLs
causing degraded performance.
The Statistics Values tables contain statistics in the following groups. To refresh
tables with the latest data, click Refresh on the upper right portion of the
Statistics Values panel or click the port’s bar graph. Clear all counters for all
users using Clear.
Class 2 Statistics
The Class 2 statistics include:
■ Received Frames—The number of Class 2 frames received by this F_Port
from its attached N_Port.
■ Transmitted Frames—The number of Class 2 frames transmitted by this
F_Port to its attached N_Port.