Forum Discussion

EIT_Network's avatar
EIT_Network
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Feb 12, 2019

Health Monitor Issue

Hello Friends,   I am back with a new query related to F5 Health Monitor.   A custom Parent Monitor (http) is available (Using word available as we did'nt configure this , configured by our imp...
application delivery
LTM
Amresh008's avatar
Amresh008
Icon for Nimbostratus rankNimbostratus
Feb 12, 2019

The SEND string that has been configured as a monitor is actually related to monitoring the services (LAYER 4) on the pool members, whereas the ping monitor checks the availability (LAYER 3 ) of the nodes forming that pool. The services may be down even if the nodes are UP. Imagine a situation in which you have built the server and assigned it an IP address which is pinging from F5 (In this case the ping monitor will show the pool to be UP). But no services or your application has been configured and hence you will not get services out of that server( the pool would be down as per the customised monitor).

 

  • Amresh008's avatar
    Amresh008
    Icon for Nimbostratus rankNimbostratus
    Feb 12, 2019

    @ Andy, thanks for pointing out the typo.

     

  • EIT_Network's avatar
    EIT_Network
    Icon for Altostratus rankAltostratus
    Feb 13, 2019

    Thanks Andy and Amy !

     

    What is the importance of RECEIVE String , Which is mentioned as TRUE in my case.