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Adilkhan_174866's avatar
Adilkhan_174866
Icon for Nimbostratus rankNimbostratus
Jan 16, 2018

Tcpdump and Ssldump Hanging

Hi Guys,

 

not sure, but when doing an ssldump or tcpdump, this occasionally hangs and does not give any output?

 

Any reasons why? Running version 12.1.2 HF2.

 

2 Replies

  • Henric_Petterss's avatar
    Henric_Petterss
    Icon for Cirrus rankCirrus
    Jan 16, 2018

    I had a problem where it hang just after I started a tcpdump. I found out it was connected to dns-lookups, so try adding option "-nn" and see if that helps.

     

  • Jad_Tabbara__J1's avatar
    Jad_Tabbara__J1
    Icon for Cirrostratus rankCirrostratus
    Jan 16, 2018

    Hello AdilKhan,

    Try the following 

    ssldump -nni 0.0 host 172.xx.xx.xx

    If it doesn't work, I think you should open a case... something corrupted in your system.

    You can also check this article about the recommandation & limitation of tcpdump on F5 systems.

    https://support.f5.com/csp/article/K6546

    Regards