The effects of vendor-specific router implementation on convergence

Due to the vendor-specific implementation, the distributed routing infrastructures can work with degraded processing performance or even crash under the stress caused by the routing dynamics. However, current simulations fail to consider such limitation and thus reduce the capability to further explore and explain the network complex dynamics. In this paper, vendor-specific models based on the measurement results of real router are employed in the simulation to explore the interaction between the router implementation and the routing dynamics during the convergence. It's observed that the failures of peer session breaking or router crashing can load noticeable stress on the router and result in the cascading failures. Our results help to explain some network instability and suggest great importance to confirm the router's performance under potential stress before network deployment or topology design.