Design topologies with Computers, L2 Switches, L3 Routers, and the Internet. Run ICMP pings, port scans, and blast 100 packets simultaneously with realistic packet animation.
Press send to watch packets fly between a PC, switch, and Internet cloud in real time.
Multi-port Ethernet switching with dynamic MAC address tables and subnet routing across multiple LANs.
Watch ICMP echo requests and TCP SYN/ACK packets traverse cables and hops with hop-by-hop latency metrics.
Blast 1, 4, 10, or 100 packets simultaneously to stress test routes, simulate traffic floods, and measure packet loss.
Simulate public WAN traffic and cloud DNS/Web services entering your local network through gateway routers.
Built-in Command Prompt on every PC with authentic output for ipconfig, ping, arp, and show mac.
Simple LAN with two PCs connected via a configurable switch.
Core switch connecting 2 PCs, a laptop, and a server.
Inter-subnet routing across 192.168.1.0 and 192.168.2.0.
Corporate network connected to the public Internet WAN.
No installation required. Runs 100% in your browser powered by Nuxt 3 and Vue.