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Abed_AL-R_26070's avatar
Abed_AL-R_26070
Icon for Nimbostratus rankNimbostratus
Feb 04, 2018

TCP Port numbers reused

Hi

 

Out GTM machine is not able to monitor some nodes with (443 or 2443 tcp) and returns in wireshark we see those weird log messages (attached) I don't understand what is happening .. GTM 11.4.1 - Hotfix HF4

 

application delivery
BIG-IP

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  • Surgeon's avatar
    Surgeon
    Ret. Employee
    Feb 05, 2018

    All messages that in square brackets need to be compared with real problem and traffic flow. All messages in square brackets are just wireshark opinion and nothing else. You can address this in wireshark community

     

    The picture you see tells you that wireshark found several SYNs with the same src-dst IP and port as SYN in 2

     

    As for failed monitor, can you share full flow and not just SYNs?

     

  • Abed_AL-R's avatar
    Abed_AL-R
    Icon for Cirrostratus rankCirrostratus
    Feb 05, 2018

    Thanks surgeon Yes I saw the same answer in wireshark community .. But anyway I thought it is somehow a bug in F5 machine .. I till why I'm asking , because the destination we're testing was down in the GTM nodes .. and only after we rebooted the machine it came up .. As you say , we need to test it further more .. Thanks