The session sudden-change alarm enable command enables the alarm function for the sudden change of the session.
The undo session sudden-change alarm enable command disables the function.
By default, the function is enabled.
After the function is enabled, if the change rate of the session reaches the threshold in a specific period, alarm FWD_1.3.6.1.4.1.2011.6.122.15.3.4.7 hwSecStatSuddenChangeTrapOverThreshold is sent. The change rate threshold can be set using the session sudden-change alarm-threshold command.