Express Connect:Monitoring and alerting for physical connections

Prerequisites

• A connection over an Express Connect circuit is created. See Create a connection in classic mode or Access a shared Express Connect circuit for more.

• Before configuring an alert rule, create an alert contact or an alert contact group. See Create an alert contact or an alert contact group for more.

View port connection status

View the real-time connection status of dedicated physical connections to promptly identify port anomalies.

1. Log on to the Express Connect console.

2. In the top navigation bar, select the destination region.

3. On the Physical Connection page, view the Status of the target Express Connect circuit.

   Important

   You can check whether an Express Connect circuit is available only after the circuit is installed, the payment is complete, and the service is activated.

   • Available: The Express Connect circuit is running normally.

   • Unavailable: Incomplete payment for the Express Connect circuit or faulty circuit.

   • -: Unknown status of the Express Connect circuit. Refresh the page and try again.

Configure port alert rules

You can configure alert rules for physical connections. If an Express Connect circuit fails, the system sends alert notifications based on your configured rules. This helps you quickly get information about port anomalies and prevent business interruptions.

1. Log on to the Express Connect console.

2. In the top navigation bar, select the destination region.

3. On the Physical Connection page, find the Express Connect circuit instance ID and click Set Alert Threshold in the Status column.

4. In the left-side navigation pane, choose Alerts > Alert Rules.

5. On the Alert Rules page, click Create Alert Rule.

6. On the Create Alarm Rule page, set the alert rule parameters and click Confirm.

   The following table describes the parameters that are related to this topic. For more information about other parameters, see Create an alert rule.

   Parameter	Description
   Product	The Alibaba Cloud service that can be managed by CloudMonitor. In this example, select Express Connect - Physical Connections.
   Resource Range	The range of resources to which the alert rule applies. Valid values: All Resources: The alert rule applies to all resources of the cloud service. Application Groups: The alert rule applies to all resources in the application group of the cloud service. Instances: The alert rule applies to the specified resources of the cloud service.
   Rule Description	The body of the alert rule. An alert is triggered when the monitoring data meets the alert conditions. To set the rule description, perform the following steps: Click Add Rule. In the Configure Rule Description panel, select a metric type, and set an alert level and a threshold. Then, click OK. Simple Metric: Select a metric and set its threshold and alert level. Combined Metrics: Select an alert level, and configure alert conditions for two or more metrics. Note If you configure a multi-metric alert rule, the target resource must have data for each metric. An alert is triggered only after the conditions for all metrics are met. For example, if a multi-metric alert rule includes the port packet loss and port bandwidth usage metrics, the alert is not triggered if the number of lost packets does not exceed the specified threshold. Expression: Select an alert level, and configure an alert expression. Dynamic Threshold: See Overview and Create a dynamic threshold-based alert rule. Note The dynamic threshold feature is available only through invitational preview. To use this feature, submit a ticket to apply for it. Note For more information about how to specify complex alert conditions, see Alert rule expressions.

Monitoring metrics

View monitoring information

You can query the port status within a specified historical time range for data analytics.

1. Log on to the CloudMonitor console.

2. In the navigation pane on the left, choose Cloud Resource Monitoring > Cloud Service Monitoring and search for the Express Connect - Physical Connections metric.

3. At the top of the Express Connect - Physical Connections page, select the region of the Express Connect circuit instance. Find the target Express Connect circuit instance ID and click Monitoring Charts in the Actions column.

   By default, the system displays monitoring data from the last hour. You can view monitoring data from the last 1 hour, 3 hours, 6 hours, 12 hours, 1 day, 3 days, 7 days, or 14 days. You can also specify a custom time range above the monitoring chart.

   • A status of 1 indicates that the port is Available and the Express Connect circuit is running as expected.

   • A status of 0 indicates that the port is Unavailable. This status may occur when payment is incomplete or the circuit is faulty.