AltostratusCould someone explain how using more number of SNAT addresses increase server efficiency? I'm aware that more number SNAT addresses reduces ephemeral port exhaustion, however, I would like to know how does this relate to server efficiency.
Employeemore SNAT addresses does not increase server efficiency. It's just a way to avoid ephemeral source port exhaustion in high-traffic scenarios.
AltostratusEmployeeIn article sol4707. "Typically, server efficiency increases as the number of SNAT addresses that are available to the virtual server increases."
i guess it means more connections can be established between bigip and server (because there are more snat ip addresses). anyway, if you want, you can open a support case to verify with askf5 team.
It could be that they meant: "server-side efficiency", because the server-side port-selection of TMM is faster when there is a bigger pool to choose from:
It tries to preserve the client's source port, and then goes on a walk among all ports to find a free one if the preferred port can't be used. When there is a big pool of ports (more IPs mean more ports, as it's 65K per IP), then a new port will be found with a shorter walk.
