Time Triggered Ethernet (TTE) provides extended time triggered communication supports over Ethernet MAC layer for distributed real time mixed criticality systems. A suite based object oriented model for TTE elements was analyzed and a simulation software tool was constructed, which can simulate different kinds of critical real time mixed criticality flows in a typical scenario of avionics system. The performance analysis of end to end delay bounds from simulations prove that TTE can provide different levels of proper real time guarantees based on characteristics of flows.