Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

dragonflymr's avatar
dragonflymr
Icon for Cirrostratus rankCirrostratus
Feb 24, 2015

SNAT pool and Automap SNAT, LB algorithm

Hi,   In SOL7820 (https://support.f5.com/kb/en-us/solutions/public/7000/800/sol7820.html)) there is info that:   If multiple floating self IP addresses are configured on the VLAN, the BIGIP ...
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Brad_Parker_139's avatar
Brad_Parker_139
Icon for Nacreous rankNacreous
Feb 24, 2015

"alternating through a pool of all floating self IPs on the VLAN" leads me to believe its round-robin between the available floating IPs on the VLAN for Automap. SNAT pool explicitly state a least connect connections algorithm.

 

  • dragonflymr's avatar
    dragonflymr
    Icon for Cirrostratus rankCirrostratus
    Feb 24, 2015
    I can recall that in some other doc there was note that RR is used for selfIP, but seeing least connection for SNAT pool I was wondering if something changed. Anyway, any idea why different LB is used for Automap and pool? Piotr
  • Brad_Parker_139's avatar
    Brad_Parker_139
    Icon for Nacreous rankNacreous
    Feb 25, 2015
    Automap is intended to be a quick and simple configuration if SNAT is needed. SNAT pools were created to be more robust and scale. SNAT pools give you much more control for this reason.