Forum Discussion

Macaron's avatar
Macaron
Icon for Nimbostratus rankNimbostratus
Feb 14, 2019

Is one self-IP enough to health check number of nodes?

Hi Guys, I am working on a new setup where I have F5 VM deployed in one arm. The device is currently standalone and configured following: 1- SNAT Pool instead of using Automap 2- ...
application delivery
cloud
F5 Cloud Services
LTM
Dylan_375544's avatar
Dylan_375544
Icon for Cirrocumulus rankCirrocumulus
Feb 14, 2019

Health checks will always come from the self IP, not a SNAT.

 

SNATS are for traffic.

 

Yes it's okay to monitor tons of nodes with one self ip.

 

Hope that helps! If it does please up-vote and select this answer, it'd be greatly appreciated!

 

-Dylan

 

  • Macaron's avatar
    Macaron
    Icon for Nimbostratus rankNimbostratus
    Feb 14, 2019

    Thanks Dylan, How will it work in case of an HA pair. Do i need to create a floating IP or Should SNAT Pool will work same way as floating IP? I am a little bit confused here. Since floating IP floats over to the standby LTM in case of a failover. Will SNAT Pool work the same way? or if I configure both floating IP and SNAT Pool which will F5 use for Data?

     

  • Dylan_375544's avatar
    Dylan_375544
    Icon for Cirrocumulus rankCirrocumulus
    Feb 14, 2019

    Yes a SNAT pool works basically the same as a floating IP.

     

    If you have a VIP set to AUTO-SNAT, it will SNAT to the floating IP.

     

    If you have a VIP set to SNAT, it will use the SNAT pool addresses.