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Forum Discussion

MustphaBassim's avatar
MustphaBassim
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Dec 19, 2023

Traffic duplicate on F5

Hello Dears when user sending traffic to virtual server the traffic is duplicate and sometime the same record of data is inserted twice a time is there any configration on F5 level that prevent that...
application delivery
zamroni777's avatar
zamroni777
Icon for MVP rankMVP
Dec 19, 2023

it seems client does not receive tcp ack from f5 so client does tcp retransmission.
i see at least 2 probable causes:

a. "Acknowledge on Push" is enabled in virtual server's client side tcp profile while server response latency is long.
hence, client does not receive tcp ack because f5 has not received server response to be pushed to client alongside the ack.
https://my.f5.com/manage/s/article/K50411377#datatransfer

b. F5 - client network connection is bad.

i suggest you collect tcpdump in client and f5 to see more details.

MustphaBassim's avatar
MustphaBassim
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Dec 19, 2023

Hello Dear and thnx for reply

ok let me disable the acknowledge and test
for network connection it seems stuiable since it's inside our company and minium interface is 1G while the F5 withour servers is 10G

 

  • zamroni777's avatar
    zamroni777
    Icon for MVP rankMVP
    Dec 19, 2023

    just for info: the client side tcp profile means virtual server's client tcp profile.

    • MustphaBassim's avatar
      MustphaBassim
      Icon for Cirrus rankCirrus
      Dec 19, 2023

      Yes i got it , it's on :

      profiles ->protocol->TCP

      and from it disable it