Monitor dashboard - Amazon CloudWatch
OverviewMonitor details
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Monitor dashboard

You can use the Amazon CloudWatch Network Monitor dashboard to view Amazon network health, and probe round-trip time and packet loss. Network Monitor has dashboards for both monitors and probes.

To access a monitor dashboard

  1. Open the CloudWatch console at https://console.amazonaws.cn/cloudwatch/, and then under Network Monitoring, choose Network Monitor.

  2. In the Network monitors section, choose the Name link to open the monitor dashboard.

Overview

The Overview page displays the following information for your monitor:

  • Amazon Network health — Amazon Network health displays the overall health of only the Amazon network. The status will be either Healthy or Degraded. A Healthy status indicates Network Monitor did not observe any issue with the Amazon network. A Degraded status indicates that Network Monitor observed an issue with the Amazon network. The status bar in this section shows the status of the network over a default time of one hour. Hover over any point of the status bar to view additional details.

  • Probe traffic summary — Displays the current state of the traffic between the source Amazon subnets in the monitor and the destination IP addresses. Probe traffic summary displays the following:

    • Probes in alarm — This number indicates how many of your probes are in a degraded state. An alarm is triggered when a metric that you've set up as an alarm is triggered. For information on Network Monitor metric alarms, see Probe alarms .

    • Packet loss — The number of packets that were lost from the source subnet to the destination IP address. This is represented as a percentage of the total packets sent.

    • Round-trip time — The time it takes, in milliseconds, for a packet from the source subnet to reach the destination IP address and then come back again.

The data is represented by an interactive graph, allowing you to see the details.

By default, data is displayed for a two-hour time frame, calculated from the current date and time. However, you can change the range to fit your requirements. For more information, see Setting a metrics time frame.

Tracking metrics

The Network Monitor dashboard displays a graphical representation of your monitors and probes. The following graphs are available:

  • Amazon Network Health Indicator — This represents the health of the Amazon network over a specified period. The status will either be Healthy or Degraded. In the following example, you'll see that from 15:00 UTC until 15:05 UTC, the Amazon network was in a degraded state. After 15:05 the network returned to a healthy state. You can hover over any section of the graph to view additional details.

    Amazon Network Health Indicator showing both a healthy and degraded state.
    Note

    The Network Health Indicator does not indicate the health of the probe but only the Amazon network.

  • Packet loss — This graph displays a unique line showing the percentage of packet loss for each probe in the monitor. The legend at the bottom of the page displays each of the probes in the monitor, color-coded for uniqueness. Hovering over a probe in this chart displays the source subnet, the destination IP, and the percentage of packet loss. In the following example, a packet loss alarm was set up for a probe from a subnet to IP address 127.0.0.1. The alarm was triggered when the packet loss threshold was exceeded for the probe. Hovering over the graph shows the probe source and destination, and shows that there was a 30.97% packet loss for this probe on November 21 at 02:41:30.

    Packet loss showing an example probe with a 30.97% packet loss.

  • Round-trip time — This graph displays a line for each probe, showing the round-trip time for each probe. The legend at the bottom of the page displays each of the probes in the monitor, color-coded for uniqueness. Hovering over a probe in this chart displays the source subnet, the destination IP address, and the round-trip time. The following example shows that on Tuesday, Nov 21 at 21:45:30, the round-trip time for a probe from a subnet to IP address 127.0.0.1 was 0.075 seconds.

    Example showing the round-trip time for a probe.

Monitor details

The Monitor details page displays the details about your monitor, including probes. On this page you can manage tags or add a probe. This page is divided into the following three sections:

  • Monitor details — This page provides details about your monitor. Information in this section can't be edited. You can, however, choose the Role name link to view details of the Network Monitor service-linked role.

  • Probes — This section displays a list of all probes associated with the monitor. Choose a VPC or Subnet ID link to open the VPC or subnet details in the Amazon VPC Console. You can modify a probe as well, including activating or deactivating it. For more information, see Working with monitors and probes in Network Monitor.

    The Probes section displays information about each probe set up for that monitor, including the probe ID, the VPC ID, the Subnet ID, IP address, Protocol, and whether the probe State is Active or Inactive. If you've set up an alarm for a probe, the current Status of that alarm displays. OK indicates that there are no metrics events have triggered any alarms; In alarm indicates that a metric you set up in CloudWatch triggered an alarm. If no status is displayed for a probe, then no CloudWatch alarm was set up. For information on the types of Network Monitor probe alarms you can create, see Probe alarms .

  • Tags — View the current tags for a monitor. You can add or remove tags by choosing Manage tags. This opens the Edit probe page. For more information on editing tags, see Edit a monitor.