Turn server count and switch choices into a complete Clos fabric design: leaf/spine counts, a full cabling matrix, BGP ASN and IP addressing plan, EVPN/VNI overlay plan, failure analysis, and copy-ready switch config.
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 · Segment Routing Policy Lab · 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.