Persistence mirroring with irules

Whithout replicating your setup in the lab I cannot give a reliable answer. The answer might also be TMOS version dependent.

One thing I´m pretty sure about is the impact of mirroring on the virtual server. In this case traffic will be replicated to the peer anyway and it will be able to build it´s own persistence table in case of the "wap" related selection.

As mirroring might have a significant performance impact this approach won´t be my first choice.

You can verify persistence records on both units via tmsh command more or less in realtime:

watch –d 'tmsh show ltm persist persist-records all-properties'

Take off the 'all-properties' switch from the command for less details.

Another approach would be to pick another virtual on your system which is bound to Pool_2 (instead of selecting Pool_2 directly). The 2nd virtual server has his own persistence profile with mirroring enabled and in this case there should be no grey zone.

Thanks, Stephan