Brocade Communications Systems Brocade 8/12c User Manual page 846

27
Bottleneck detection
If you add additional switches, including logical switches, to the fabric, bottleneck detection is not
automatically applied, so be sure to enable bottleneck detection on those switches as well.
NOTE
It is recommended that you enable bottleneck detection on every switch in the fabric.
Enabling bottleneck detection enables both latency and congestion detection.
When you enable bottleneck detection, you also determine whether alerts are to be sent when the
bottleneck conditions at a port exceed a specified threshold. These alert parameters apply to all
ports in the switch, unless you override them later.
1. Select Monitor > Performance > Bottlenecks.
2. Select Enable if it is not already selected.
3. (Optional) Select the Alerts check box to enable alerts.
4. (Optional) Enter values for the alert settings, or use the default values.
5. Select one or more fabrics, switches, or ports from the Products/Ports list.
6. Click the right arrow to apply the settings in the Bottleneck Detection pane to the selected
7.
802
The Bottlenecks dialog box displays.
NOTE
Best practice is to enable alerts and use the default values:
Congestion80%
Latency10%
Window300 seconds
Quiet Time300 seconds
If you change the Window value, you should use a setting that is 300 seconds or higher.
You can select fabrics or switches or ports, but you cannot select a mix of fabrics, switches,
and ports.
elements in the Products/Ports list.
If you selected one or more ports, and bottleneck detection is disabled on the switch, you are
prompted to enable bottleneck detection on the entire switch. You cannot enable a single port
unless you had specifically disabled it previously.
Click OK or Apply to save your changes.
Brocade Network Advisor SAN User Manual
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