HP StorageWorks 2.12 Edge Switch - Manual (Page 190)

Optional Features
190 Edge Switch Element Manager User Guide
5. Set the Low BB Credit Threshold.
Note: Using default settings for this threshold should work well in most cases. This step
is not required.
This is the percentage of time that the transmitting link cannot transmit
because BB_Credit is unavailable. It is the percent of time that the link can be
treated as back-pressured by the rerouting algorithm. This value is also used
when determining routes for a transmit link. A back-pressured ISL cannot be
the recipient of traffic rerouted from other ISLs, and traffic on a
back-pressured ISL may be rerouted even if the ISL is not congested.
— Click Default Threshold and a default value (1 to 99%) displays in the
threshold field. If the default is enabled, you cannot enter values into the
field.
— Click in the threshold field and enter a value from 1 to 99.
6. Click Activate to enable these values on the switch and close the dialog box.
Pop-Up Menu
Right-click on columns in the Congestion Threshold table to display menu
options that globally change values in the column cells. These columns are as
follows:
Use Algorithmic Threshold
Right-click in the column to display these options:
■ Set all to Default—Adds checks to all check boxes in this column and sets all
cells of the Threshold % column to default values.
■ Clear All —Clears all check boxes in this column and restores values in cells
of the Threshold % column with previous values.
Threshold %
Right-click in the column to display these options:
■ Set All To xx—Sets all cells in this column to the value (xx) that you clicked.
■ Restore All— Sets all cells in the column to the previous values.