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noircc's avatar
noircc
Icon for Nimbostratus rankNimbostratus
May 30, 2023

Mystical Connection Close - without logs, after stress test.

Hello,

we have a problem regarding a mystical Connection close. 

We are stress testing an echo-application which is behind a F5. 

- 20 Threads , 500 Request each. 

Sometimes we get a connection close, but can't find anything in the f5 logs.

Any clue why this is happening? 

security
  • Mohamed_Ahmed_Kansoh's avatar
    Mohamed_Ahmed_Kansoh
    May 30, 2023

    Hi noircc , 

    Follow This Article : https://my.f5.com/manage/s/article/K13223 
    To enable the RST Cause db to get more info from Logs or Packet captures for the Drop or traffic resets. 

    Take the Pcap after enabling the RST Cause db during passing your test traffic through bigip ,  after finishing the Captures make sure to disable the RST cause db because it consumes from bigip resources ( CPU and Memory ) 

    Thanks

  • Mohamed_Ahmed_Kansoh's avatar
    Mohamed_Ahmed_Kansoh
    Icon for MVP rankMVP
    May 30, 2023

    Hi noircc , 

    Follow This Article : https://my.f5.com/manage/s/article/K13223 
    To enable the RST Cause db to get more info from Logs or Packet captures for the Drop or traffic resets. 

    Take the Pcap after enabling the RST Cause db during passing your test traffic through bigip ,  after finishing the Captures make sure to disable the RST cause db because it consumes from bigip resources ( CPU and Memory ) 

    Thanks