WebNMS Simulation Tool comprises easy-to-use GUI-based agent simulator and network simulator for testing training and demonstration of network management applications. The network simulator enables network simulation of 100000+ SNMP (v1 v2c v3) TL1 TFTP FTP Telnet and Cisco IOS devices on a single PC. It also provides the Topology Editor to establish inter-connections across routers switches and other network devices and visualize the topological relationship between the devices.Simulation Toolkit provides Network Recorder and Trap Recorder to record and replay real SNMP networks and traps and create simulations of actual devices of your network. Devices can be configured at run-time both on individual and collective basis. The tool allows bulk addition of devices with unique IPv4 or IPv6 address and port bulK modification of device properties like IPv4 or IPv6 address port number and MIB values advanced modeling of agentnetwork behavior and trap generation customization of SNMP requestresponse PDUs. The agentnetwork management through RMI provides solution for automated testing.Ability to simulate 100000+ agents simultaneously for scalability testing trap simulation for fault management testing configuration of device values and simulation types for performance testing behavior simulation for testing realisticnegative test scenarios across network devices startstop of network at runtime automated network simulation and easy-to-use GUI enables full-fledged simulation of large networks.