Thank you I have attached a log.
One is "show security flow session summary"result and the other is "show security monitoring fpc 0" result.
The results were like that.
user> show security flow session summary |no-more
--------------------------------------------------
Unicast-sessions: 28963
Multicast-sessions: 0
Failed-sessions: 7678478
Sessions-in-use: 33075
Valid sessions: 28440
Pending sessions: 1
Invalidated sessions: 4634
Sessions in other states: 0
Maximum-sessions: 524288
user> show security monitoring fpc 0 |no-more
--------------------------------------------------
FPC 0
PIC 0
CPU utilization : 26 %
Memory utilization : 74 %
Current flow session : 33670
Max flow session : 524288
Session Creation Per Second (for last 96 seconds on average): 0
--------------------------------------------------
Our concerning is that we have so many failed sessions but the number of session creation per second is always 0.
We have no idea of this situation.
I have to add one more thing, we do not have any trafic logs. (maybe because of the policy).
In that case, how can I find session flow?
Thank you,