Using the command line interface (CLI) : diagnose : diagnose debug application sniffer block-session
 
diagnose debug application sniffer block-session
Allows you to enable debugging for session blocking activity in the sniffer thread.
Syntax
diagnose debug application sniffer block-session {enable | disable}
See also
diagnose debug application sniffer abnormal
diagnose debug application sniffer basic
diagnose debug application sniffer block-ip
diagnose debug application sniffer ip-reassemble
diagnose debug application sniffer malformed-packet
diagnose debug application sniffer packet
diagnose debug application sniffer tcp-reassemble