Swregn.com Juniper Simulator with Designer for JNCIA has the following features - Router Simulator and Network Simulator, 25+ labs available for thorough hands-on preparation, Network Designer supporting J2320/J2350/J4350/J6350 J-series routers, M7i/M10i M-series routers , EX-series switches and connectors available are Serial, Ethernet/Fast Ethernet/Gigabit Ethernet, Sonet, E1, E3 etc and Detailed help file.