HTTP cookie insert pesistence broken in Viprion Failover

Hi

I´m involved in a project to replace our e-commerce web site load balancers with a pair of Viprion 2400 in redundant configuration. All load balanced services will be HTTP or HTTP and HTTPS. One of our requirements is persistence from HTTP to HTTPS has to be maintained on load balanced services in which there are both kind of traffic, and our current load balancers are using cookie insert persistence to achieve it.

Well, in order to get the same thing on Viprion devices, we are trying to use universal persistence profile solution with irule to maintain HTTP-to-HTTPS persistence, published in devcentral irule samples section:

https://devcentral.f5.com/wiki/iRules.HttpToHTTPsCookiePersistence.ashx.

All seems to work fine for us with universal persistence profile with irule inside active Viprion. However, we notice persistence is not maintained if a failover to redundant Viprion occurs, even inside the same protocol. That´s because persistence table is not being replicated to redundant Viprion, but universal persistence profile has mirroring persistence enabled.¿¿??. We are taking a view to persistence records on both viprion load balancers, and we only see persistence records on active box. Now take a look to this is the situation, we think it´s happening and it´s the problem:

1. A client tries to get one HTTP load balanced service. Client is load balanced to one of HTTP pool members. A new persistence record is created on active Viprion.

2. A failover occurs to redundant Viprion.

3. Now the same client tries to get the same service using HTTP or HTTPS. Backup Viprion hasn´t persistence record for this client, so a new load balance decision is made by backup Viprion, and a new pool member is selected... so persistence is lost.

Is there anyway to solve our issue? Why persistence is not being replicated to backup Viprion? Our current load balancers with cookie insert persistence maintain a cookie_value-to-backend_server ip persistence table and it´s being replicated to backup load balancer.

Thanks.