You need to configure a flexible flow statistics template and aggregation keywords before applying the template to an interface. To obtain more detailed flow statistics, you can configure whether the flexible flow statistics exported to the NSC contain the number of packets and bytes, indexes of the inbound and outbound interfaces, and TCP flags of a flow.
By default, the flexible flow statistics that are exported to the NSC do not contain the number of packets or bytes.
By default, the flexible flow statistics exported to the NSC do not contain the index of the inbound or outbound interface.
By default, the flexible flow statistics exported to the NSC do not contain the TCP flags of a flow.