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tux143's avatar
tux143
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Apr 15, 2020

Switching boot image

I have LTM 10350v with two images installed 13.1.0.8 and 12.1.2 (currently 13.x is running)   I am seeing some issue with 13.1.0.8 so thinking to switch it to 12.1.2 for testing, so question is do...
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Joern's avatar
Joern
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Apr 16, 2020

ok, so the issue resolved? 😊

  • tux143's avatar
    tux143
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    Apr 16, 2020

    It stopped logging in /var/log/ltm but now when i running my load-test with 500k TCP connection with 800/s rate then some of my tcp connection not getting through and client saying failed to connect.

     

    I have tried bunch of new TCP profile, buffer adjustment and all short of thing but no improvement but then i decided to add more SNAT ip in pool and that works i didn't get error of connection failure so i thought let me load more tcp connection so i start my load-testing with 600k tcp connection with 800/s rate and that test failed again with connection failure, so trying to understand why SNAT source port starving? I have check connection table and its not using all 64k ports but still something somewhere not right. Do you have any clue to trace this kind of issue? I may enable TCP reset cause logs and see..

    • Joern's avatar
      Joern
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      Apr 16, 2020

      what kind of test is this? sometimes it can be problem with the application that it has fixed source port area e.g. 3CX Voip Client

    • tux143's avatar
      tux143
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      Apr 16, 2020

      We have 4 mongooseIM server behind F5 and bunch of xmpp clients sending xmpp traffic like text messages etc.. to simulate production workload. my goal is to run 1 million clients (tcp connection) with 1000/s rate.

       

      (i have run same workload without F5 and its successful like all client sending traffic directly to mongooseIM nodes using scripted way to load-balance connection but my goal is to run them behind F5 for many reason.

       

      We have all TCP application no more UDP or SIP style traffic which need special care of source port preservation.