Many network topologies provide resiliency to protect network services. This typically means re-routing traffic away from a faulty line section. However frame loss will occur if a connection is re-routed. When traffic with a given transmitted frame rate is sent through the connection during re-routing, packet loss can be measured and the convergence time can be calculated. Valkyrie can be used to measure convergence, while Chimera is used to emulate latency and jitter.