Help to create an iRule for SIP connections

Hi guys,

 

Today I have a VIPRION load balancing SIP connections. In this solution there are multiple sources IPs (around 800 CIDR /20) that I can't summarize because they are not continuous. Amount of these /20 use the same snat pool for SIP connections (I have 10 CIDR /28 for NAT). I need that the same source IP address always take the same NAT IP and NAT PORT.

 

Imagine for example that I have two sources 10.0.0.0/20 and 10.0.32.0/20 and that these two /20 use the same snat pool 20.20.20.0/28, we assume that the source ip 10.0.0.1 made a request and he used the nat ip 20.20.20.1 and nat port 3000 and the IP 10.0.32.1 made a request and used the nat ip 20.20.20.2 and nat port 3001.

 

I need to get the ip 10.0.0.1 always use the same NAT IP 20.20.20.1 and the same NAT PORT 3000 for all connections, the same should apply to the ip 10.0.32.1 respectively.

 

Thanks!