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**Example 1: To create a flow log** The following ``create-flow-logs`` example creates a flow log that captures all rejected traffic for the specified network interface. The flow logs are delivered to a log group in CloudWatch Logs using the permissions in the specified IAM role. :: aws ec2 create-flow-logs \ --resource-type NetworkInterface \ --resource-ids eni-11223344556677889 \ --traffic-type REJECT \ --log-group-name my-flow-logs \ --deliver-logs-permission-arn arn:aws:iam::123456789101:role/publishFlowLogs Output:: { "ClientToken": "so0eNA2uSHUNlHI0S2cJ305GuIX1CezaRdGtexample", "FlowLogIds": [ "fl-12345678901234567" ], "Unsuccessful": [] } **Example 2: To create a flow log with a custom format** The following ``create-flow-logs`` example creates a flow log that captures all traffic for the specified VPC and delivers the flow logs to an Amazon S3 bucket. The ``--log-format`` parameter specifies a custom format for the flow log records. :: aws ec2 create-flow-logs \ --resource-type VPC \ --resource-ids vpc-00112233344556677 \ --traffic-type ALL \ --log-destination-type s3 \ --log-destination arn:aws:s3:::flow-log-bucket/my-custom-flow-logs/ \ --log-format '${version} ${vpc-id} ${subnet-id} ${instance-id} ${srcaddr} ${dstaddr} ${srcport} ${dstport} ${protocol} ${tcp-flags} ${type} ${pkt-srcaddr} ${pkt-dstaddr}' **Example 3: To create a flow log with a one-minute maximum aggregation interval** The following ``create-flow-logs`` example creates a flow log that captures all traffic for the specified VPC and delivers the flow logs to an Amazon S3 bucket. The ``--max-aggregation-interval`` parameter specifies a maximum aggregation interval of 60 seconds (1 minute). :: aws ec2 create-flow-logs \ --resource-type VPC \ --resource-ids vpc-00112233344556677 \ --traffic-type ALL \ --log-destination-type s3 \ --log-destination arn:aws:s3:::flow-log-bucket/my-custom-flow-logs/ \ --max-aggregation-interval 60 For more information, see `VPC Flow Logs <https://docs.aws.amazon.com/vpc/latest/userguide/flow-logs.html>`__ in the *Amazon VPC User Guide*.