title: Discrete event simulator for asymmetric bandwidth network simulation
body: <p>I am wondering if there exists any discrete event simulator that can simulate a tcp/ip network with asymmetric links. I'm trying to test extreme asymmetries and see how the network performs. <a href="https://github.com/WalkerMills/network_simulator" rel="nofollow noreferrer">Here</a> is a repo for a simpy library that I've found for a great tcp simulator however, the links are symmetric. Simpy is preferred but if there is anything else please let me know. I'm trying to see if there's anything else out there that I might have missed before I try to embark on creating my own network simulator in simpy.</p>
  <p>Any help is welcome</p>
  <p>Thank you</p>