HP StorageWorks 2/140 fw 05.01.00 and sw 07.01.00 ha-fabric manager user guide - Page 191
ongestion Thresholds, Use Algorithmic Threshold, Threshold, Event Notification, Unresolved Congestion
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Optional Features 3. Set the Congestion Thresholds for ports as percentages of link bandwidths, in the range of 1% through 99%. These thresholds are used only when a port becomes an ISL. When the link's traffic load becomes greater than this percentage, the link is seen as "congested" and traffic is rerouted (if possible) to an uncongested link. Note that rerouting may not be possible if there are no alternate links available or if alternate links are congested or have no available BB_Credit. Note: Using default settings for port congestion thresholds should work well in most cases. This step is not required. Set the Congestion Threshold using one of these methods: ■ Click the check box under the Use Algorithmic Threshold column to display a value under the Threshold % column. This value is computed by the feature's rerouting algorithm. If you click this check box, you cannot enter a value into the Threshold % column for the port. ■ If you click the check box to remove the check mark, 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 Gbps or 2 Gbps) and channel bandwidth. This field cannot be left blank. 4. Set Event Notification options. Note that, 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 check mark 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. High Availability Fabric Manager User Guide 191
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