Brocade Network Advisor SAN + IP User Manual v12.1.0 - Manual (Page 1538)

Brocade Network Advisor SAN + IP User Manual 1491
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Bottleneck detection
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FIGURE 641 Bottlenecks dialog box
2. Select Enable if it is not already selected.
3. Select the Congestion Alerts check box to enable alerts for congestion bottlenecks. Clear this
check box to disable alerts. If you enabled alerts, enter threshold values between 1 and 100,
or use the default value for triggering a congestion alert.
4. Select the Latency Alerts check box to enable alerts for latency bottlenecks. If you enabled
alerts, enter values for the following thresholds:
• Threshold - Enter values between 1 and 100, which is the percentage of one-second
intervals affected by congestion conditions within a specified time window that will trigger
a latency alert.
• Time Threshold - Enter the minimum fraction of a second (sub-second time) that must be
affected by latency in order for that second to be considered affected by a latency
bottleneck and trigger a latency alert. Values are in tenths of a second from 0 through 10
tenths, or 1 second. You can only configured Time Threshold for switches running Fabric
OS v7.1.0 and later.
• Severity Threshold - Enter a severity threshold from 1 through 1000. This specifies the
factor that throughput must drop in a second (sub-second severity) for that second to be
considered affected by a latency bottleneck and trigger a latency alert. You can only
configured Severity Threshold for switches running Fabric OS v7.1.0 and later.
NOTE
When setting time and severity threshold values the at switch level or fabric level, all values
applied to individual ports are overridden and updated with the new values.
5. Enter a value for Window in seconds over which the percentage of seconds affected by
bottleneck conditions is computed and compared with the threshold. Values can be from 1
through 10800 seconds (3 hours).
6. Enter a value for Quiet Time, which is the minimum number of seconds between consecutive
alerts. Enter values from 1 through 31556926 (approximately 1 year).