Configure Port Utilization Thresholds and Notifications

There are two port utilization alarms:

•

lowportutilization—Utilization Alarm Low Status Change

•

portutilization—Utilization Alarm High Status Change

Use the high utilization threshold to detect high port utilization. Use the low utilization threshold to detect low port utilization. Or use both thresholds.

The thresholds for these alarms are configured as a percentage using the port command as follows:

(config) # port 1/1/x1 alarm low-utilization-threshold 30
(config) # port 1/1/x1 alarm high-utilization-threshold 70

To enable SNMP notifications when these thresholds are exceeded, use the snmp-server command as follows:

(config) # snmp-server notify event lowportutilization
(config) # snmp-server notify event portutilization

An SNMP notification will be sent when a threshold is exceeded in any 5-second interval. A clear notification will be sent when the threshold is no longer exceeded. Clear notifications are sent for both rx and tx directions, for both porttutilization and lowporttutilization.

The thresholds can be disabled by setting them to zero, as follows:

(config) # port 1/1/x1 alarm low-utilization-threshold 0
(config) # port 1/1/x1 alarm high-utilization-threshold 0

If a threshold has been exceeded, but is then disabled, a clear notification will be sent.

Examples:

•

When the high utilization threshold is set to 70% and the traffic on the port rises above 70%, if the porttutilization alarm is enabled, it will be sent. If the traffic then falls below 70%, a clear notification (clearing the high threshold) will be sent.

•

When the low utilization threshold is set to 30% and the traffic on the port falls below 30%, if the lowporttutilization alarm is enabled, it will be sent. If the traffic then rises above 30%, a clear notification (clearing the low threshold) will be sent. The lowporttutilization alarm will also be sent if there is no traffic or if the traffic is between 0 and 30%.

•

When the high utilization threshold is set to 70% and the traffic on the port rises above 70%, if the porttutilization alarm is enabled, it will be sent. If the high utilization threshold is then disabled, a clear notification will be sent.