Forum Discussion

dcarterjr's avatar
dcarterjr
Icon for Altostratus rankAltostratus
Feb 01, 2023

Add LTM to existing HA pair

I need to add 2 LTMs to an exsiting HA pair, and create a second traffic group in that device group.  The second pair are in a different location.  I've looked at many F5 articles, and it looks doabl...
application delivery
  • Paulius's avatar
    Paulius
    Feb 02, 2023

    dcarterjr I believe the best route would be to create the new traffic group on the existing pair first to confirm it functions. After that you should be able to add in the other devices to the HA pair the same as any other F5 HA setup. This article might help you with your configuration.

    https://clouddocs.f5.com/training/community/adc/html/class1/module1/lab4.html

    The only concern I would have is latency between the 4 devices because those other devices are at a different location. As long as you can extend your subnets for the existing pair to the other location for the two new devices it should be possible to configure this setup.

LiefZimmerman's avatar
LiefZimmerman
Icon for Admin rankAdmin
Nov 30, 2023

Great conversation.
Thanks for so much context dcarterjr and for providing so much help and clarification Paulius.
Were you ever able to get this working?
If so...were one or more of the replies here complete enough to *Accept As Solution* ?

Would love to have this highlighted as a solution for the community if possible.
Cheers,
Lief

  • dcarterjr's avatar
    dcarterjr
    Icon for Altostratus rankAltostratus
    Dec 01, 2023

    The solution provided by Paulius worked well.  Latency was an issue, so we extened the timeout for communication failure between devices from 3 seconds to 10 seconds, which worked well.  It was a good learning experience.  Everyone's help was greatly appreciated.