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NSX: Edge high availability dead time value

Well studying for my NSX 6.2 exams, I found that there were some confusing over dead time value and polling interval for NSX edge HA. While doing my NSX class I asked my instructor about it and he clarified the following:

In NSX Edge HA configuration (as of 6.3) :-

  • Default Declare dead time is 15 seconds
  • The minimum acceptable value 9 seconds, anything below 9 seconds will not work
  • The polling interval is 1 seconds

You can see the polling interval by running “debug packet” commands in the edge.

How does the dead time value impact connectivity? As a quick test, I have a machine pinging another machine behind the Edge HA.

Dead time = 15 seconds –> 11 ping time out

Dead time = 9 seconds –> 4 pings time out

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Posted by on April 6, 2017 in vmware

 

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