name : update-monitor.rst **To update a monitor** The following ``update-monitor`` example changes a monitor's ``aggregationPeriod`` from ``60`` seconds to ``30`` seconds. :: aws networkmonitor update-monitor \ --monitor-name Example_NetworkMonitor \ --aggregation-period 30 Output:: { "monitorArn": "arn:aws:networkmonitor:region:012345678910:monitor/Example_NetworkMonitor", "monitorName": "Example_NetworkMonitor", "state": "PENDING", "aggregationPeriod": 30, "tags": { "Monitor": "Monitor1" } } For more information, see `How Amazon CloudWatch Network Monitor Works <https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/nw-monitor-how-it-works.html>`__ in the *Amazon CloudWatch User Guide*.