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jan_de_wachter_'s avatar
jan_de_wachter_
Icon for Nimbostratus rankNimbostratus
May 23, 2016

LTM TCP statistics - Received Reset

I have a problem finding information about BIGIP-LTM statistics. We have a very important application, whith long-lasting sessions. When viewing the VS statistics with the TCP profile we see the fo...
application delivery
BIG-IP
LTM
Yann_Desmarest_'s avatar
Yann_Desmarest_
Icon for Nacreous rankNacreous
May 23, 2016

Hi,

 

Statistics are just counter that need to be reset sometimes. To make sure that your app works fine, you can reset the statistics in the webui (Statistics >> Module Statistics >> Local Traffic). You can reset tcp stats of your tcp profile in your VS and check if tcp reset counter increase again.

 

You can also launch a tcpdump on the F5 cli and check if there is some tcp reset from one of the peer.

 

In your case, the tcp reset can come from the client too.

 

  • jan_de_wachter_'s avatar
    jan_de_wachter_
    Icon for Nimbostratus rankNimbostratus
    May 23, 2016
    Yann, Thanks for your answer. We do a reset of the statistics every Sunday. The statistics show us that every connection receives a TCP reset. But since the pool statistics are also updated, I'am sure the connection client - F5 - servers is working. What can cause this TCP reset. We dot not prefer using TCPDUMP since the amount of traffic that is generated.
  • Yann_Desmarest_'s avatar
    Yann_Desmarest_
    Icon for Nacreous rankNacreous
    May 23, 2016
    Hi, You can use a clone pool to clone traffic of the VS to an external system. You can use a linux system that has wireshark installed. You can also sniff the traffic on your network and check for tcp reset.