Express Connect:VBR monitoring and alerting

Prerequisites

• You have created a VBR. For more information, see Create and manage a virtual border router.

• Before you configure an alert rule, create an alert contact or alert contact group. For more information, see Create an alert contact or an alert contact group.

View VBR status

You can view the VBR status to quickly identify exceptions.

1. Log on to the Express Connect console.

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

3. On the Virtual Border Routers (VBRs) page, find the target VBR and view its Status.

   Important

   A VBR status is available only after the VBR is connected to an Express Connect circuit.

   • Available: The VBR is running normally.

   • Unavailable: The VBR is malfunctioning.

   • -: The VBR status is unknown. Refresh the page and try again.

View VBR monitoring data

1. Log on to the Express Connect console.

2. In the top navigation bar, select the target region, and then in the left-side navigation pane, click Virtual Border Routers (VBRs).

3. On the Virtual Border Routers (VBRs) page, find the target VBR and click the icon in the Monitor column.

   By default, the system displays monitoring data from the last hour. Above the monitoring chart, you can select a time range of 1 hour, 3 hours, 6 hours, or 12 hours, or specify a custom time range.

   Note

   Monitoring data of a VBR is synchronized to the console with a delay of approximately 1 minute. Take this delay into account when you view monitoring data.

Configure a VBR alert rule

You can configure an alert rule for a VBR. If the VBR malfunctions, the system sends an alert notification based on the rule, allowing you to quickly detect issues and prevent service disruptions.

1. Log on to the Express Connect console.

2. In the top navigation bar, select the target region, and then in the left-side navigation pane, click Virtual Border Routers (VBRs).

3. On the Virtual Border Routers (VBRs) page, find the target VBR and click the icon in the Monitor column.

4. In the Monitor dialog box, click Set Alert Threshold in the upper-right corner.

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

6. In the Create Alert Rule panel, configure the following parameters and click OK.

   This section describes only the parameters relevant to this operation. For more information about other parameters, see Create an alert rule.

   Parameter	Description
   Product	The cloud service monitored by CloudMonitor (CMS). Select Express Connect - VBR.
   Resource range	The scope of the alert rule. Select All Resources if you want an alert to be triggered if any VBR in your Alibaba Cloud account fails. Select Application Group and then select a specific application group from the Associated Resources drop-down list. An alert is triggered if any VBR in the specified application group fails. Select Instance and then select the region and instance ID of the VBR from the Related Resource drop-down list. An alert is triggered only if the specified VBR instance fails.
   Rule Description	The conditions that trigger the alert. An alert rule is triggered when a metric meets the specified alert conditions. Configure the rule as follows: Click Create Rule. In the Configure Rule Description panel, enter a Alert Rule, then define the rule conditions. Simple Metric: Select a metric, then set its threshold and alert level. Alert levels use an escalations model. When the threshold reaches a specific level, only that level is triggered; other levels are not triggered simultaneously. For example, if the threshold directly reaches Critical, only the Critical alert is triggered, and the Info and Warning alerts are not triggered at the same time. Combined Metrics: Select an alert level, then define an alert condition using two or more metrics. Note Multi-metric alert rules require the target resource to report data for every included metric. For example, if the rule includes a public network metric but the ECS instance has no public IP address, the alert does not trigger. Expression: Select an alert level, then define an alert expression. Dynamic Threshold: Smart threshold details: Overview | Create a smart threshold alert rule. Click OK. Note Complex alert expressions: Alert rule expression reference.

VBR monitoring metrics

VBR monitoring data is collected at a frequency of one minute per data point.

VBR monitoring provides only aggregate traffic statistics, including inbound and outbound rates and packet counts. VBR monitoring does not support IP-level traffic analysis. If you need IP-level traffic information, consider attaching the VBR to an ECR and enabling ECR flow log.