Microsft implemented VIPs in RDS and Citrix, since the XenApp 6.0 release, rely on the RDS implementation and is providing additional benefits (virtual loopback IP for example) to the RDS VIPs. Configuring VIPs in XenApp is therefore very different as it was in the older releases of XenApp and CPS : it requires a configuration at RDS level as well as XenApp level : VIP must be configured on the server (or via GPO) and within the XenApp policies.