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HenryO_166334's avatar
HenryO_166334
Icon for Nimbostratus rankNimbostratus
Aug 09, 2014

Keepalive v TCP Idle timeout

Hi   In relation to F5 Load balancing, could someone explain to me the difference between the Keepalive and TCP Idle timeout?   Client > F5 > Server in Server pool   Does one relate to clien...
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Kevin_Davies_40's avatar
Kevin_Davies_40
Icon for Nacreous rankNacreous
Aug 10, 2014

Keeping connections alive is the default for HTTP v1.1 which is currently the worldwide standard. Is is a header provided by the web browser whenever HTTP version 1.1 requests are used. See HTTP Persistent Connections

 

Connection: Keepalive

 

The TCP Idle timeout is the longest the F5 will keep a TCP client connection open when talking with the either side depending on the TCP profile you apply. See Solution ID 7606 for more information on the BIGIP TCP behaviour and its settings.

 

  • Peter_Z's avatar
    Peter_Z
    Icon for Cirrus rankCirrus
    Aug 10, 2014
    Kevin, I don`t think tcp keepalive, configured in the tcp profile is the same as HTTP keepalive you are mentioning. TCP profile settings will affect any L7 protocol..
  • Kevin_Davies_40's avatar
    Kevin_Davies_40
    Icon for Nacreous rankNacreous
    Aug 10, 2014
    That is correct they are quite separate. The OP wanted to know the difference.