Cisco Routing Simulator : VIRL (Virtual Internet Routing Lab)
Cisco now introduces their own routing simulator called VIRL – Virtual Internet Routing Lab. Basically it is similar to GNS3 simulator, but offers a lot more flexibility in terms of what sorts of IOS you can run on it. The Cisco Virtual Platforms that will be supported are IOS, NX-OS, IOS XR, and IOS XE. Not Sure about L2 Devices. If you wana go for demo you can try the below link. Seems to be good for those who are looking for CCIE. Release date I’ve heard is around January 2014. http://www.youtube.com/watch?v=nsbzHmwUz6I