Express Connect:Monitoring and alerting for connections over Express Connect circuits

Prerequisites

• A connection over an Express Connect circuit is established. For more information, see Create and manage a dedicated connection over an Express Connect circuit or Overview of hosted connections.

• An alert contact or an alert contact group is created before you configure an alert rule. For more information, see Create an alert contact or alert contact group.

View the status of connections over Express Connect circuits

You can view the status of connections over Express Connect circuits updated in real time. This helps you detect connectivity errors at the earliest opportunity.

1. Log on to the Express Connect console

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

3. On the Physical Connection page, you can view the status of a connection over an Express Connect circuit in the Connection Status column.

   Important

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

   • Available: The Express Connect circuit is working as expected.

   • Unavailable: The payment is not complete or the Express Connect circuit has errors.

   • -: The status of the Express Connect circuit is unknown.

Configure alert rules

After you configure alert rules, the system sends alert notifications based on the configured alert rules when the Express Connect circuit is down. This helps you detect connectivity errors at the earliest opportunity to prevent service interruptions.

1. Log on to the Express Connect console

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

3. On the Physical Connection page, find the ID of the Express Connect circuit that you want to manage and click Set Alert Threshold in the Connection 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 Alert Rule page, configure the following parameters and click Confirm.

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

   Parameter	Description
   Product	The name of the Alibaba Cloud service that can be monitored by CloudMonitor. In this example, Express Connect - Physical Connections is selected.
   Resource Range	The range of the resources to which the alert rule is applied. Valid values: All Resources: The alert rule applies to all resources of the specified cloud service. Application Groups: The alert rule applies to all resources in the specified application group of the specified cloud service. Instances: The alert rule applies to the specified resources.
   Rule Description	The content of the alert rule. An alert is triggered if the conditions are met. To specify the rule description, perform the following operations: Click Add Rule. In the Configure Rule Description panel, enter a rule name in the Alert Rule field and configure the Metric Type parameter. Valid values of the Metric Type parameter: Simple Metric: Select a metric and set the threshold and alert level for the metric. Combined Metrics: Select an alert level and specify alert conditions for two or more metrics in the Multi-metric Alert Condition section. Note If a multi-metric alert rule is configured, the desired resource must have data on each metric. An alert can be triggered only if the related conditions are met. For example, if a multi-metric alert rule includes Internet metrics but the ECS instance is not configured with an elastic IP address (EIP), alerts cannot be triggered. Expression: Select an alert level and then configure an alert expression. Dynamic Threshold: For more information about dynamic thresholds, see Overview and Create dynamic threshold-triggered alert rules. Note The dynamic threshold feature is in invitational preview. To use the feature, you must submit a ticket. Click OK. Note For more information about how to specify complex alert conditions, see Alert rule expressions.

Monitoring metrics

View monitoring data of a connection over an Express Connect circuit

You can analyze the monitoring data of the connection collected within a specified time range.

1. Log on to the CloudMonitor console.

2. In the left-side navigation pane, click Cloud Service Monitoring. On the page that appears, enter Express Connect - Physical Connections in the search box. Then, click Express Connect - Physical Connections.

3. On the Express Connect-Physical Connection page, select the region of the Express Connect circuit, find the Express Connect circuit and click Monitoring Chart in the Actions column.

   By default, the system displays monitoring data within the last hour. You can select 1 Hour, 3 Hours, 6 Hours, 12 Hours, 1 Day, 3 Days, 7 Days, or 14 Days, or specify a custom time range above the monitoring chart.

   • If the status of the Express Connect circuit 1, it indicates that the Express Connect circuit is available.

   • If the status of the Express Connect circuit is 0, it indicates that the Express Connect circuit is unavailable.