The ACL function of intelligent traffic analysis for UDP flows has been enabled on a device.
When a UDP flow is continuously received, analysis results of the UDP flow are periodically sent to the TDA on a per-block basis. When the inactive time (the time from when the last UDP packet is received to the current time) of the UDP flow exceeds the configured inactive aging period, the device considers that the UDP flow is inactive (the flow is interrupted). In this case, the device forcibly sends the current flow table to the TDA and deletes it. This process is called inactive aging.
traffic-analysis udp timeout inactive inactive-interval
The default time is 30 seconds.