Hi all How many ip address are enough for specific SNAT pool? What is the key for this sizing?

Is all about port exhaustion. One snat IP will be capable of 65,535 concurrent connections (although this isn't strictly true but is the recommended practice). So you'll need to understand your concurrent connections to see how many snat addresses you'll need.

Hope this helps,

N

Check out SOL7820: Overview of SNAT features - https://support.f5.com/kb/en-us/solutions/public/7000/800/sol7820.htmlexhaustion