You can use the following features to monitor your transit gateways, analyze traffic patterns, and troubleshoot issues with your transit gateways.
- CloudWatch metrics
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You can use Amazon CloudWatch to retrieve statistics about data points for your transit gateways as an ordered set of time series data, known as metrics. You can use these metrics to verify that your system is performing as expected. For more information, see CloudWatch metrics in Amazon VPC Transit Gateways.
- Transit Gateway Flow Logs
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You can use Transit Gateway Flow Logs to capture detailed information about the network traffic on your transit gateways. For more information, see Transit Gateway Flow Logs.
- VPC Flow Logs
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You can use VPC Flow Logs to capture detailed information about the traffic going to and from the VPCs that are attached to your transit gateways. For more information, see VPC Flow Logs in the Amazon VPC User Guide.
- CloudTrail logs
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You can use AWS CloudTrail to capture detailed information about the calls made to the transit gateway API and store them as log files in Amazon S3. You can use these CloudTrail logs to determine which calls were made, the source IP address where the call came from, who made the call, when the call was made, and so on. For more information, see CloudTrail logs.
- CloudWatch Events using Network Manager
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You can use AWS Network Manager to forward events to CloudWatch, and then route those events to target functions or streams. Network Manager generates events for topology changes, routing updates, and status updates, all of which can be used to alert you to changes in your transit gateways. For more information, see Monitoring your global network with CloudWatch Events in the AWS Global Networks for Transit Gateways User Guide.
