Explore the four sources of network delay with live formulas, shared parameters, and animations showing where each delay occurs.
Watch packets queue and transmit in a live simulation, then compare measured waiting time with the animated traffic-intensity graph.
Follow animated data through a single connection, then explore multiple connections sharing a link.
Follow a name through the DNS hierarchy. Explore referrals, caching and TTL, then resolve an alias with CNAME and A records.
Follow an email from Alice to Bob. Inspect SMTP commands, message headers, and the protocols used to read stored mail.
Build a demonstration checksum from UDP or TCP header fields, one binary column at a time.
End-to-end TCP simulation with sender/receiver buffers, sliding window, congestion control phases, and live packet exchange. Covers the complete connection lifecycle.
Explore IP addresses at the bit level. Understand CIDR notation, subnet masks, block sizes, and address allocation through live interactive visualizations.
Build dynamic topologies with routers, subnets, and hosts. Visualize packet routing, NAT / PAT translation tables, and /30 point-to-point links on an interactive canvas.
Interactive router with live forwarding table lookups, longest-prefix matching, and per-interface inspection. Trace how a datagram is forwarded hop-by-hop.
Step through Dijkstra (Link-State) and Bellman-Ford (Distance Vector) algorithms on configurable network graphs. Watch routing tables converge in real time.
General-purpose graph visualizer for exploring network topology as a graph. Build arbitrary topologies, apply shortest-path algorithms, and visualize the LS flooding model.