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Two fail over object on ha group

neeeewbie
MVP
MVP

Hi guys

I need your help

fail over occur when configure Two fail over object (two trunk) on ha group?

fail over occur when turn down one trunk ? or fail over occur when turn off both trunk?

thank you

1 ACCEPTED SOLUTION

Hi,

 

If I understand you correctly, you're asking about HA group configuration behavior. If yes, then it depends on 2 parameters:

  • "Must have a minimum of ... " parameter
  • HA weight score.
  • Active bonus score

So, when you're setting Failover method, you have to set it to "Best HA Score" and after everything is done by simple math calculation. Each object in HA Group (in your case trunks) has it weight and hence score, so they are accumulated + don't forget about active device bonus score. So in the end, failover occurs if active device will end with lower HA score than the passive one.

 

For more details you can read the following article:

https://devcentral.f5.com/s/articles/configure-ha-groups-on-big-ip-26678

 

There is configuration based on pool members, but the logic is the same.

 

Hope that helps.

// Giorgi

View solution in original post

2 REPLIES 2

Hi,

 

If I understand you correctly, you're asking about HA group configuration behavior. If yes, then it depends on 2 parameters:

  • "Must have a minimum of ... " parameter
  • HA weight score.
  • Active bonus score

So, when you're setting Failover method, you have to set it to "Best HA Score" and after everything is done by simple math calculation. Each object in HA Group (in your case trunks) has it weight and hence score, so they are accumulated + don't forget about active device bonus score. So in the end, failover occurs if active device will end with lower HA score than the passive one.

 

For more details you can read the following article:

https://devcentral.f5.com/s/articles/configure-ha-groups-on-big-ip-26678

 

There is configuration based on pool members, but the logic is the same.

 

Hope that helps.

// Giorgi

did this answer your question neeeewbie, please flag it as such then.