GTM persistancy based on iRule

Hi,

 

 

I would like to create an iRule in order to make persistancy based on source IP.

 

 

Objectives : redirect client on two differents pool (GTM Pool with 1 Pool member and so 1 VIP by Pool) according to result of the modulo (crc32) of the IP::client_addr

 

 

I have created this iRule but it doesn't work :

 

 

when DNS_REQUEST {

 

set key [IP::client_addr]

 

log local1. "IP cliente $key"

 

set modulo [crc32 [$key]]

 

if { $modulo equals "0" } {

 

pool pool_gtm_da_wildcard

 

log local1. "Result modulo $modulo"

 

}

 

elseif { $modulo equals "1" } {

 

pool pool_gtm_da_wildcard2

 

log local1. "Result modulo $modulo"

 

}

 

}

 

 

Do you have any idea or suggestion about this ?

 

 

Many thanks for your help.

 

 

Regards