Cloud Enterprise Network (CEN) provides a monitoring page where you can view information about resource usage. This topic describes how to view the monitoring data of transit routers, bandwidth plans, inter-region connections, and Express Connect circuits associated with virtual border routers (VBRs) and the data transfer information about connections between network instances and transit routers in the CEN console.
Background information
The Charts tab displays the monitoring data within the last hour by default. Each data entry is the average value within a minute.
To monitor the peak bandwidth, the system collects a bandwidth value every 6 seconds. A total of 10 bandwidth values are collected in each minute. The largest value is used as the peak bandwidth value in the minute. Bandwidth monitoring data shows traffic fluctuations within seconds.
You can query monitoring data within the last 3 hours, 6 hours, 12 hours, 1 day, 7 days, and 30 days, or a custom time period. You can also set the Interval parameter to query monitoring data that is collected at a specified interval.
Monitoring data can be automatically updated.
On the top of the Charts tab, turn on Auto Refresh to enable the system to automatically update the monitoring data every minute.
Limits
You can view the monitoring data only of Enterprise Edition transit routers.
You can view the monitoring data only of connections between network instances and Enterprise Edition transit routers.
View the monitoring data of transit routers
- Log on to the CEN console.
- On the Instances page, click the ID of the CEN instance that you want to manage.
On the details page of the CEN instance, choose
.On the Transit Router Monitoring tab, select a transit router and view the monitoring data.
Metric
Description
Inbound Traffic Rate
The data transfer rate from the network instance to the transit router. Unit: bit/s.
Outbound Traffic 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: 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.
NoteYou 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
- Log on to the CEN console.
- On the Instances page, click the ID of the CEN instance that you want to manage.
On the details page of the CEN instance, choose
.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 monitoring information about cross-region connections
- Log on to the CEN console.
- On the Instances page, click the ID of the CEN instance that you want to manage.
On the details page of the CEN instance, choose
.On the Cross-region Bandwidth Monitoring tab, select an inter-region connection and view the bandwidth monitoring data.
Metric
Description
InterRegionPeakBandwidthRate
This monitoring metric consists of four items. The system displays the following information for two connected regions, such as Region A and Region B:
The peak bandwidth of data transmission from Region A to Region B. Unit: bit/s.
The peak bandwidth of data transmission from Region B to Region A. Unit: bit/s.
The average bandwidth of data transmission from Region A to Region B. Unit: bit/s.
The average bandwidth of data transmission from Region B to Region A. Unit: bit/s.
InterRegionPeakBandwidthUtilization
This monitoring metric consists of four items. The system displays the following information for two connected regions, such as Region A and Region B:
The percentage of the peak bandwidth of data transmission from Region A to Region B.
The percentage of the peak bandwidth of data transmission from Region B to Region A.
The percentage of the average bandwidth of data transmission from Region A to Region B.
The percentage of the average bandwidth of data transmission from Region B to Region A.
InterRegionRateLimitDropPackets
This monitoring metric consists of two items. The system displays the following information for two connected regions, such as Region A and Region B:
The loss rate of packets transmitted from Region A to Region B. Unit: pps.
The loss rate of packets transmitted from Region B to Region A. Unit: pps.
LatencyByConnectionRegion
The network latency between the regions. Unit: milliseconds.
NoteYou 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 queues on the Cross-region Connections tab. For more information, see Monitor inter-region connections.
The metrics InternetOutRateByConnectionRegionA/B, InternetOutRatePercentByConnectionRegionA/B, and InternetOutDropRateByConnectionRegionA/B are deprecated.
View the monitoring data of bandwidth plans
- Log on to the CEN console.
- On the Instances page, click the ID of the CEN instance that you want to manage.
On the details page of the CEN instance, choose
.On the Bandwidth Plan Usage Monitoring tab, select a bandwidth plan and view the monitoring data.
Metric
Description
CENBandwidthPackagePeakBandwidthRate
This monitoring metric consists of two items:
Rate of Outbound Bandwidth: the peak bandwidth of the bandwidth plan. Unit: bit/s.
Average Rate of Outbound Bandwidth: the average bandwidth of the bandwidth plan. Unit: bit/s.
CENBandwidthPackagePeakBandwidthUtilization
This monitoring metric consists of two items:
Usage of Outbound Bandwidth: the percentage of the peak bandwidth to the maximum bandwidth of the bandwidth plan.
Average Usage of Outbound Bandwidth: the percentage of the average bandwidth to the maximum bandwidth of the bandwidth plan.
NoteOn 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 monitoring information about other bandwidth plans, see Monitor a bandwidth plan.
The metrics InternetOutRateByConnectionArea and InternetOutRatePercentByConnectionArea are deprecated.
View the monitoring data of Express Connect circuits
- Log on to the CEN console.
- On the Instances page, click the ID of the CEN instance that you want to manage.
On the details page of the CEN instance, choose
.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.
ImportantBy 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
To avoid business interruptions caused by insufficient resources, you can create alert rules in the CloudMonitor console for transit routers, network instance connections, bandwidth plans, inter-region connections, and Express Connect circuits. For more information, see the following topics: