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Express Connect:Monitor and create alerts for a VBR-to-VPC connection

Last Updated:Jan 22, 2026

Express Connect uses Cloud Monitor to provide monitoring and alerting for VBR-to-VPC connections. You can monitor the real-time status of a connection and receive alert notifications based on your configured rules. This helps you efficiently monitor the connection status and prevent failures from affecting your services.

Prerequisites

View monitoring information for a VBR-to-VPC connection

  1. Log on to the Express Connect console.

  2. In the top navigation bar, select the destination region. In the navigation pane on the left, choose VPC Peering Connection > VBR-to-VPC Connection.

  3. On the VBR Connections page, find the target VBR-to-VPC connection, and then click the Monitoring icon in the Monitoring column to view the monitoring information.

    By default, monitoring data from the last hour is displayed. You can view data from the last 3, 6, or 12 hours. You can also click Custom to specify a custom period.

Configure alert rules for a VBR-to-VPC connection

You can configure alert rules for a VBR-to-VPC connection to receive alert notifications when the connection fails. This helps you quickly identify connection issues and prevent service disruptions.

  1. Log on to the Cloud Monitor console.

  2. In the navigation pane on the left, choose Alert Service > Alert Rules.

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

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

    Parameter

    Description

    Product

    The cloud service that CloudMonitor can manage. In this topic, select Express Connect - Peering Connection.

    Resource Range

    The scope of resources to which the alert rule applies. Valid values:

    • All Resources: The alert rule applies to all existing and new resources of the specified cloud service.

    • Application Group: The alert rule applies to all existing and new resources within the specified application group.

    • Instance: The alert rule applies only to the specified resources of the cloud service.

    Rule Description

    Specify the condition of the alert rule. An alert is triggered when the condition of the alert rule is met. To specify a condition, perform the following operations:

    1. Click Add Rule.

    2. In the Set Rule Description panel, enter a Rule Name, and then set the rule conditions.

      • Simple Metric: Select a metric, and then set a threshold and an alert level for the metric.

      • Composite Metric: Select an alert level and configure a multi-metric alert description to set conditions for two or more metrics.

        Note

        If you create a multi-metric alert rule, the target resource must have data for each metric. An alert is triggered only after all conditions are met. For example, if a multi-metric alert rule includes a metric for the public network but the ECS host is not configured with a public IP address, the alert cannot be triggered.

      • Expression: Select an alert level, and then configure an alert expression.

      • Intelligent Threshold: For more information about intelligent thresholds, see Overview and Create an intelligent threshold alert rule.

        Note

        The intelligent threshold feature is in invitational preview. To use this feature, you must submit a ticket to request access.

    3. Click OK.

    Note

    For more information about how to set complex alert conditions using expressions, see Alert rule expressions.

VBR-to-VPC connection metrics

Metric

Description

MetricName

Statistics

Inbound traffic

The total inbound traffic received from the peer.

Unit: Byte.

IntranetRX

Value

Outbound traffic

The total outbound traffic sent to the peer.

Unit: Byte.

IntranetTX

Value

Inbound bandwidth

The average rate of inbound traffic received from the peer.

Unit: bit/s.

ReceiveBandwidth

Value

Outbound bandwidth

The rate of outbound traffic sent to the peer.

Unit: bit/s.

TransportedBandwidth

Value

Packet loss rate

The ratio of data packets dropped because the bandwidth limit of the VBR-to-VPC connection is exceeded to the total number of data packets transmitted over the connection.

RouterInterfaceLossRate

Maximum

Packets dropped due to throttling

The total number of data packets that are sent to the peer and dropped due to throttling.

Unit: pps.

RateLimitDropPps

Value

RI health check packet loss rate

During a health check on the VBR-to-VPC connection between a VBR instance and a VPC-connected instance, this is the ratio of response packets that are not received to the total number of probe packets sent.

Note

This setting takes effect only when the health check feature is enabled.

  • If the leased line is down, the packet loss rate is 100%.

  • If the leased line is working correctly, the packet loss rate is 0.

RouterInterfaceHealthyCheckLossRate

Value

RI health check latency

During a health check on the VBR-to-VPC connection between a VBR instance and a VPC-connected instance, this is the time it takes to receive a response after a probe packet is sent. Unit: us

Note

This metric is available only after you enable the health check feature.

  • If the leased line is down, the latency is 0.

  • If the leased line is working correctly, the latency is a non-zero value.

RouterInterfaceHealthyCheckLatency

Value