Network Monitor dashboards
You can use dashboards in Amazon CloudWatch Network Monitor to determine if a network issue is caused by AWS, by using the network health indicator (NHI), and view probe round-trip time and packet loss. You can view this information and metrics for monitors, as well as for individual probes.
Network Monitor creates several metrics that you can view in CloudWatch Metrics. You can specify alarms for the metrics that Network Monitor returns. For more information, see Probe alarms.