CEN automatically monitors key metrics for your network resources, including traffic rates and bandwidth usage. You can create Cloud Monitor alert rules to receive notifications when metrics exceed thresholds, helping you detect and resolve issues early.
Supported resources
For VPC, ECR, VPN, and VBR connections, you can view metrics only on the Enterprise Edition transit routers to which they are attached.
Resource | Monitoring granularity |
Enterprise Edition transit router |
|
VPC connection |
|
ECR connection |
|
VPN connection |
|
VBR connection |
|
inter-region connection |
|
Express Connect circuit | You can view metrics for the Express Connect circuit associated with a VBR. The monitoring includes only the traffic rate and bandwidth usage for traffic that passes through the VBR on the Express Connect circuit. |
bandwidth plan | You can view metrics for the bandwidth plan instance. |
Zone-level monitoring
When an Enterprise Edition transit router connects to a VPC, ECR instance, VBR, or IPsec connection, CEN deploys resources in the transit router's supported zones to establish the connection.
You can specify the deployment zone for VPC connections. For ECR, VBR, and VPN connections, you cannot specify the zone; the system automatically selects one.
CEN automatically monitors all zones with connected resources on the Enterprise Edition transit router. If a zone does not appear in the monitoring data, the transit router has no connected resources in that zone and no traffic passes through it.
How metrics are collected
Each data point represents the average value collected within a 1-minute period.
For peak bandwidth rate metrics, the system samples every 10 seconds within a 1-minute period. The highest of the six samples is reported as the peak bandwidth rate for that minute, enabling detection of second-level micro-burst traffic.
For average bandwidth rate metrics, the system calculates the average bandwidth rate across the 1-minute period.
Transit router metrics
Network instance connection metrics
Inter-region connection metrics
Express Connect circuit metrics
Bandwidth plan metrics
View monitoring data
View metrics for all resources
To view queue metrics for an inter-region connection with a QoS policy, use the Monitoring tab of that specific connection. View monitoring metrics for an inter-region connection.
The Charts page shows monitoring data only for bandwidth plans associated with the current CEN instance. To view any bandwidth plan, see View monitoring metrics for a bandwidth plan.
Log on to the CEN console.
On the CEN Instance page, click the ID of the CEN instance that you want to manage.
On the instance details page, click the Charts tab. On the Charts tab, select a sub-tab: Transit router metrics, Intra-region connection metrics, Inter-region connection metrics, Bandwidth plan metrics, or VBR Health Check. Use filters such as Region and Transit Router Connection Instance to locate your target resource.
By default, the Charts tab displays data from the last hour at 1-minute intervals.
Above the chart, you can change the time range to 3 hours, 6 hours, 12 hours, 1 day, 7 days, 30 days, or a custom range. You can also adjust the Interval to view data at different intervals.
You can automatically refresh monitoring data.
To refresh data every minute, enable Auto Refresh above the chart.
For transit routers and network instance connections (VPC, ECR, VPN, and VBR), you can view zone-level monitoring data.
To view zone-level data, enable Zone-level Results above the chart. Each line represents a different zone.
View metrics on resource tabs
Transit router
Log on to the CEN console.
On the CEN Instance page, click the ID of the CEN instance that you want to manage.
On the tab, find the target transit router and click the
icon in the Status column.In the Monitoring panel, view the monitoring metrics of the transit router.
Network instance connection
Log on to the CEN console.
On the CEN Instance page, click the ID of the CEN instance that you want to manage.
On the tab, find the transit router to which the network instance connection is attached and click the transit router ID.
On the Intra-Region Connections page, find the target network instance connection, click the
icon in the Status column, and then view the monitoring metrics in the Monitoring panel.
Inter-region connection
Log on to the CEN console.
On the CEN Instance page, click the ID of the CEN instance that you want to manage.
On the tab, find the transit router to which the inter-region connection is attached and click the transit router ID.
On the transit router details page, click the Inter-Region Connections tab.
On the Inter-Region Connections page, find the target inter-region connection and click the
icon in the Status column.In the upper-left corner of the Monitoring panel, select All Queues to view the monitoring metrics of the inter-region connection.
In the upper-left corner of the Monitoring panel, select Default Queue or a specific queue to view the monitoring metrics of the QoS policy queue.
Express Connect circuit
Log on to the CEN console.
In the left-side navigation pane, click VBR Health Check.
On the VBR Health Check page, select the region where the VBR is deployed.
Find the target health check configuration and click the
icon in the Status column to view the monitoring metrics of the Express Connect circuit.
Bandwidth plan
Bandwidth plan associated with CEN
Log on to the CEN console.
On the CEN Instance page, find the CEN instance to which the target bandwidth plan is associated and click the CEN instance ID.
On the instance details page, choose and find the target bandwidth plan.
Click the
icon in the Monitoring column to view the monitoring metrics of the bandwidth plan.
Any bandwidth plan
Log on to the CEN console.
In the left-side navigation pane, click Bandwidth Plans. On the Bandwidth Plans page, find the target bandwidth plan.
Click the
icon in the Monitoring column to view the monitoring metrics of the bandwidth plan.
Create an alert rule
Create Cloud Monitor alert rules to receive notifications when metrics exceed thresholds, helping you detect and resolve issues before service interruptions occur.
Log on to the CEN console.
On the CEN Instance page, click the ID of the CEN instance that you want to manage.
On the tab, find an Enterprise Edition transit router and click Set Alarm in the Monitoring column.
In the Configure Rule Description panel, click Cancel.
In the Create Alert Rule panel, configure the parameters based on your business requirements and click OK.
Only the most relevant parameters are described here. For all parameters, see Create an alert rule.
Product: Select the type of resource that you want to monitor.
CEN-Area: monitors bandwidth plan instances.
CEN-Region: monitors inter-region connections and QoS policy queues.
CEN-VBR: monitors Express Connect circuits.
CEN-TR: monitors transit router instances and network instance connections.
Resource Range: Select the scope of resources to monitor.
Rule Description: Click Add Rule, select a metric from the drop-down list, and then set the rule conditions in the Configure Rule Description panel.
NoteYou cannot create an alert rule for the Latency metric of inter-region connections.
References
After you create an alert rule, view the alert history and manage rules in the Cloud Monitor console. Alert Service.
To compare metrics across resources, create a custom monitoring dashboard in Cloud Monitor. Visualization overview.
To query CEN monitoring data programmatically, use the Cloud Monitor API.
Cloud Monitor API operations: Cloud service monitoring.
Values for namespace, MetricName, Dimensions, and Period parameters: Appendix 1: Cloud service monitoring metrics.
To monitor specific traffic patterns, configure Flow logs. Flow logs record traffic for Enterprise Edition transit routers, inter-region connections, and network instance connections (VPC, ECR, VPN, and VBR).