Cloud Enterprise Network:View the monitoring data of a CEN instance

Background information

• CEN allows you to view the monitoring data of transit routers, bandwidth plans, inter-region connections, Express Connect circuits, and network instance connections. By default, the dashboards display the monitoring data of resources within the previous hour and the average within every minute is collected.

  You can select 3 hours, 6 hours, 12 hours, 7 days, 30 days, or a custom time range on the top of the Charts tab to view the monitoring data collected within the specified time range. You can also modify the Interval parameter to collect the average within every 5 minutes, 15 minutes, 1 hour, or 1 day.

• The system can automatically update monitoring data.

  On the top of the Charts tab, turn on Auto Refresh to enable the system to automatically update monitoring data every minute.

Limits

You can view the monitoring data of only Enterprise Edition transit routers and the monitoring data of connections between network instances and Enterprise Edition transit routers.

View the monitoring data of transit routers

1. Log on to the CEN console.
2. On the Instances page, find the CEN instance that you want to manage and click the instance ID.
3. On the details page of the CEN instance, choose Charts > Transit Router Monitoring.
4. On the Transit Router Monitoring tab, select a transit router and view the monitoring data.

   Metric	Description
   Inbound Data Transfer Rate	The data transfer rate from the network instance to the transit router. Unit: bit/s.
   Outbound Data Transfer Rate	The data transfer rate from the transit router to the network instance. Unit: bit/s.
   Inbound Packet Rate	The packet forwarding rate from the network instance to the transit router. Unit: packets per second (pps).
   Outbound Packet Rate	The packet forwarding rate from the transit router to the network instance. Unit: pps.
   Inbound Bytes	The byte transfer rate from the network instance to the transit router. Unit: bytes.
   Outbound Bytes	The byte transfer rate from the transit router to the network instance. Unit: bytes.
   Inbound Packets	The number of packets that the transit router receives from the network instance. Unit: packets.
   Outbound Packets	The number of packets that the transit router sends to the network instance. Unit: packets.

   Note You can view the monitoring data of transit routers on the Charts or Transit Router tab. For more information, see Monitor transit routers.

View the monitoring data of network instance connections

1. Log on to the CEN console.
2. On the Instances page, find the CEN instance that you want to manage and click the instance ID.
3. On the details page of the CEN instance, choose Charts > Connected Instance Monitoring.
4. On the Connected Instance Monitoring tab, select the region of the transit router and select a network instance that is associated with the transit router.

   Metric	Description
   AttachmentOutRate	The data transfer rate from the transit router to the network instance. Unit: bit/s.
   AttachmentInRate	The data transfer rate from the network instance to the transit router. Unit: bit/s.
   AttachmentBlackHoleDropBytes	The rate at which packets from the network instance are dropped due to blackhole routing. Unit: bit/s.

View the monitoring data of inter-region connections

1. Log on to the CEN console.
2. On the Instances page, find the CEN instance that you want to manage and click the instance ID.
3. On the details page of the CEN instance, choose Charts > Cross-region Bandwidth Monitoring.
4. On the Cross-region Bandwidth Monitoring tab, select an inter-region connection and view the bandwidth monitoring information.

   Metric	Description
   InternetOutRateByConnectionRegion	The bandwidth of the inter-region connection that is occupied. Unit: bit/s. This monitoring metric consists of two items. The system displays the following information for the connected regions, such as Region A and Region B: The usage of the bandwidth for data transfer from Region A to Region B. The usage of the bandwidth for data transfer from Region B to Region A.
   InternetOutRatePercentByConnectionRegion	The ratio of the occupied bandwidth to the maximum bandwidth of the inter-region connection. This monitoring metric consists of two items. The system displays the following information for the connected regions, such as Region A and Region B: The percentage of A-to-B bandwidth resources to the total bandwidth resources. The percentage of B-to-A bandwidth resources to the total bandwidth resources.
   LatencyByConnectionRegion	The network latency between the regions. Unit: milliseconds.
   InternetOutDropRateByConnectionRegion	The rate at which packets are dropped due to traffic throttling between the regions. Unit: pps. This monitoring metric consists of two items. The system displays the following information for the connected regions, such as Region A and Region B: The packet loss rate of the data transfer from Region A to Region B caused by bandwidth throttling. The packet loss rate of the data transfer from Region B to Region A caused by bandwidth throttling.

   Note

   • You can view the bandwidth monitoring data of inter-region connections on the Charts or Cross-region Connections tab. For more information, see Monitor inter-region connections.
   • If you have configured a quality of service (QoS) policy for the inter-region connection, you can view the monitoring data of the QoS queue on the Cross-region Connections tab. For more information, see Create threshold-triggered alert rules for an inter-region connection.

View the monitoring data of bandwidth plans

1. Log on to the CEN console.
2. On the Instances page, find the CEN instance that you want to manage and click the instance ID.
3. On the details page of the CEN instance, choose Charts > Bandwidth Plan Usage Monitoring.
4. On the Bandwidth Plan Usage Monitoring tab, select a bandwidth plan and view the monitoring data.

   Metric	Description
   InternetOutRateByConnectionArea	The bandwidth usage information. Unit: bit/s.
   InternetOutRatePercentByConnectionArea	The ratio of the occupied bandwidth to the total bandwidth.

   Note On the Charts tab, you can view the monitoring data of only bandwidth plans that are associated with the current CEN instance. For more information about how to view the monitoring data of other bandwidth plans, see Monitor a bandwidth plan.

View the monitoring data of Express Connect circuits

1. Log on to the CEN console.
2. On the Instances page, find the CEN instance that you want to manage and click the instance ID.
3. On the details page of the CEN instance, choose Charts > VBR Health Check.
4. On the VBR Health Check tab, select a VBR that is associated with an Express Connect circuit to view the monitoring data of the Express Connect circuit.

   Metric	Description
   VBRInternetOutRate	The bandwidth that is used to transmit data from Alibaba Cloud to the data center. Unit: bit/s.
   VBRInternetInRate	The bandwidth that is used to transmit data from the data center to Alibaba Cloud. Unit: bit/s.
   VBRHealthyCheckLatency	The network latency between Alibaba Cloud and the data center. Unit: milliseconds.
   VBRHealthyCheckLossRate	The rate at which packets between Alibaba Cloud and the data center are dropped.

   Important

   • By default, you can view information about outbound bandwidth (VBRInternetOutRate) and inbound bandwidth (VBRInternetInRate) of an Express Connect circuit on the Charts tab. If you want to view information about latency (VBRHealthyCheckLatency) and packet loss rate (VBRHealthyCheckLossRate) of the Express Connect circuit, configure health checks for the Express Connect circuit. For more information, see Configure health checks.
   • You can view the monitoring data of an Express Connect circuit on the Charts tab or the Health Check page. For more information, see Monitor Express Connect circuits.

References