HP Brocade BladeSystem 4/12 Brocade Network Advisor SAN User Manual v11.1x (53 - Page 850

27 Thresholds and event notification Disabling bottleneck detection Use this procedure to exclude specific ports from bottleneck detection or to disable bottleneck detection on entire switches or fabrics. It is not recommended to disable bottleneck detection on a port except under special circumstances. For example, if a long-distance port is known to be a bottleneck because of credit insufficiency, you could disable bottleneck detection on that port. 1. Select Monitor > Performance > Bottlenecks. The Bottlenecks dialog box displays. 2. Select Disable. 3. Select one or more fabrics, switches, or ports from the Products/Ports list. You can select fabrics or switches or ports, but you cannot select a mix of fabrics, switches, and ports. 4. Click the right arrow to apply the settings in the Bottleneck Detection pane to the selected elements in the Products/Ports list. 5. Click OK or Apply to save your changes. Thresholds and event notification Performance allows you to apply thresholds and event notification to real-time performance data. A performance monitor process (thread) monitors the performance data against the threshold setting for each port and issues an appropriate alert to notify you when the threshold is exceeded. For information about configuring event notification, refer to Event Notification. NOTE It is not necessary to configure event notification to receive events in the master log. If the threshold is exceeded for a threshold, an event is automatically generated and displayed in the master log. Creating a threshold policy NOTE If you set the threshold for a particular critical event to 100%, by the time you are notified, it may be too late to prevent a failure. However, when you set the threshold to 85%, for example, you may be able to prevent the failure from occurring. Example The values at 1 second, 3 seconds, and 5 seconds generate events because they exceed boundaries. The value at 2 seconds does not generate an event because, although it crosses the boundary, it remains in the buffer zone. The value at 6 seconds generates an event because it crosses the lower boundary and returns to a value beyond the buffer zone. 806 Brocade Network Advisor SAN User Manual 53-1002167-01