Draw a topology, define SR policies with dynamic (CSPF) and explicit candidate paths, watch the lab pick a winner, compress the SID list, animate TI-LFA repairs, and compare Flex-Algo routing.
Subnet / CIDR Calculator · Bandwidth-Delay Product Calculator · Subnet Quiz · Availability / SLA Calculator · Data-Center Capacity Planner · Tick-to-Trade Latency Calculator · Optical Link Budget Calculator · PTP Timing Budget Calculator · PTP Holdover Planner · ECMP Hash Polarization Visualizer · Network ACL Analyzer — Cisco Access-List Checker · Network config verifier · PTP/SyncE Network-Wide Timing Simulator · Wireshark Display Filter Builder · Wi-Fi Channel Interference Planner · QoS Token-Bucket Policer & Shaper Simulator · BGP Toolkit · iPerf3 Command Builder · MTU/MSS Tunnel Overhead Calculator · Data Center Fabric Designer · RoCEv2 Lossless Ethernet Planner · Coherent DWDM / 400ZR Reach Planner · Multicast Design Studio · BGP Route Reflector Design Planner · CGNAT Port-Block Planner · Microburst Buffer Planner · 400G/800G Port Breakout Planner — all free, all run entirely in your browser.