Forum Discussion
CirrostratusSNAT 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:
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If multiple floating self IP addresses are configured on the VLAN, the BIGIP system translates the address of client connections by alternating through a pool of all floating self IPs on the VLAN.
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The BIGIP system load balances SNAT pool connections between members using the least connections algorithm.
So is the same way used for both Automap and SNAT pool or different algorithms are used - can't find info for Automap.
Piotr
6 Replies
Brad_Parker_139Nacreous
"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.
dragonflymrI 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_139Automap 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.
Brad_ParkerCirrus
"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.
- dragonflymrI 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_ParkerAutomap 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.
