HP Surestore 64 - Director Switch User Manual page 201

4. Set Event Notification options.
5. Set the Low BB_Credit Threshold.
Note:
cases. This step is not required.
Director Product Manager User Guide
box, you cannot enter a value into the Threshold % column for the
port. If you click the check box to remove the checkmark, any value
that was set in the Threshold % column for the port will redisplay.
— Click in the Threshold % column and enter a value in the range of 1
through 99.
Note: If no threshold is entered for a port, a default value is used that is based
on port type (1 Gb/sec or 2 Gb/sec) and channel bandwidth. This field
cannot be left blank.
Note: If enabled, these notifications occur the first time the events occur.
Notifications are not resent while the problem persists.
— Unresolved Congestion. Click this check box to display a checkmark and
enable notification. If enabled, an "unresolved congestion" entry is made
to the Event Log and an SNMP trap will be generated, if trap recipients
are configured through the Configure SNMP dialog box.
An unresolved congestion event occurs when the rerouting algorithm
cannot find a path for rerouting data flow and relieving congestion on an
ISL.
— Back Pressure. Click this check box to display a checkmark and enable
this option. If enabled, a back pressure entry will be made to the Event
Log and an SNMP trap will be generated if trap recipients are configured
through the Configure SNMP dialog box.
A back pressure event occurs when the percentage of time the ISL has no
available BB_Credit exceeds the Low BB_Credit threshold. A separate
event also occurs when the back pressure condition ends.
Using default settings for Low BB_Credit Threshold should work well in most
Optional Features
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