SNAT pool persistence

Problem this snippet solves: This example shows how select the same SNAT address from the SNAT pool for a given client IP address over multiple connections without tracking the selection in memory. ...
Published Mar 18, 2015
Version 1.0
application delivery
devops
iRules
utility
KaiDuerkop's avatar
KaiDuerkop
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Dec 05, 2016

Hey, we're using this irule to persist ~200.000 Client Connections, it works very good.

We have one problem with this iRule. After a BIG-IP Failover the new active BIG-IP has a problem to load the array_size variable.

err tmm4[11616]: 01220001:3: TCL error: /Common/snat_client  - can't read "static::array_size": no such variable     while executing "expr {[crc32 [IP::client_addr]] % $static::array_size}"