A multi-vendor config generator and a WiFi heatmap planner in one place. H3C to NX-OS, VLAN to OSPF, floor plan to report. Fewer typos, less guesswork.
Generate the switch and router configs, then plan the WiFi that connects to them.
Generate ready-to-review configs from 18 templates. Multi-vendor support, one-click copy, instant download. Generated from tested templates.
Import a floor plan, place access points, and see signal, SINR and weak spots on a heatmap. Calibrate with field readings and export a Word report.
A free diagram editor for network engineers: drag routers, switches, firewalls and APs onto a canvas, connect them with labelled cables and export. You can also import a WiFi Planner project as a starting point.
Drag H3C, Cisco and generic equipment into a true-scale 19-inch rack, then place the racks in a room with hot and cold aisles. Power, weight, clearance and cooling are checked as you go, and problems are listed so you can fix them before install day.
Built by a network engineer, for network engineers. Browse the source, report bugs, or ask for a template you need.
Active development with regular releases. Here's what shipped recently:
Ruijie (RGOS) is now a vendor in the Config Builder, with three platforms: switches (VLAN, trunk, LAG, VRRP, OSPF, ACL), routers (dot1Q sub-interfaces, NAT, DHCP, routing) and WLAN AC with fit APs (SSIDs, AP groups, WPA2-PSK, DHCP option 138). Nine templates included. Syntax follows public Ruijie documentation, so test on your model first.
Press ? to see every shortcut (C cable tool, F fit, V front/rear, G gaps). The Core and Compute templates now come with cabling and power cords. Cable schedules export to PDF, PNG, SVG and CSV, and large projects (600+ devices) stay fast.
Draw power cords from device PSUs to PDU outlets: devices then take their A or B feed from the PDU, and each PDU is checked against its capacity. Auto power cords wires a whole rack in one click. Racks now show kW, BTU/h and the airflow needed, with a warning above about 10 kW. Send the cabled devices to the Topology editor as a ready diagram, or open a switch in the Config Builder with its hostname and interface descriptions filled in from its cables.
Connect any port to any port with the Cable tool (press C): pick the cable type (Cat5e/6/6A, DAC, AOC, OM3/OM4/OS2 fiber, console, USB), colour, length and label. Cables are drawn on the rack front and rear, with warnings for a wrong cable type, a port used twice and a cable that is too long. Includes a cable schedule (CSV, PDF) and a purchase list by type and length.
H3C switches and servers are now drawn in black and Cisco in grey, like the real hardware. The category colour moved to a thin line on top (toggle: Tag). H3C S6860 now has its console, management ports, four fan trays and two PSUs on the rear. H3C servers get the UniServer ear layout (VGA, Type-C, USB on the left; power, UID, health on the right), a Bezel toggle and serial labels.
Switches, firewalls, servers, storage, patch panels, PDUs and UPS units are now drawn like the real hardware, front and rear: port blocks with numbering, console and LEDs, drive bays and carriers, power supply and fan modules, PCIe slots. Each device shows a front and rear preview in its panel, and the equipment list shows a thumbnail. Port counts and types follow each model; LED and module positions are illustrative. Every port now has an ID, ready for cabling in the next version.
The CIDR field in each DHCP pool is now a dropdown (/8 to /32) that lists how many usable hosts each size gives, for example "/24 - 254 hosts", and shows the pool size under the form. If you list excluded IPs, it also shows how many users are left. This is display only; the generated config is unchanged.
The Snap menu in Room mode now explains the shortcuts: hold Alt while dragging for free placement, or Shift to snap to floor tiles.
Rack tabs now show a "Double-click to rename" tooltip, so naming racks is easier to discover.
Rooms now have a tile grid (600 mm squares with row and column labels) and racks and objects snap into the tiles and stay inside the walls. Pick a rack type from a catalogue (cabinet, open frame, wall mount) and any height in U, name each rack, and see the server count per rack and for the whole project. Fixes: duplicated racks no longer land on top of the original, double-click rename works, the first click after editing a field is no longer lost, and the editor now fits phone screens.
Rack Builder now has a Room mode. Set the room size, place racks and objects (doors, cooling units, columns) on a to-scale plan, and drag them with snapping. Racks arrange into hot and cold aisles with one click, and the plan checks clearance in front and behind each rack, door swing, racks facing the wrong way, and the room heat load against your cooling capacity. A 3D view lets you orbit the room. Export the plan or the 3D view as PNG, PDF or SVG.
A new tool for planning server racks to scale: drag H3C, Cisco and generic equipment into a 19-inch rack, see the front and rear, and check power per feed, loss of a feed, rack weight and floor loading. Open gaps, overlaps and duplicate names or IPs are listed as issues. Export PNG, PDF, SVG, a bill of materials (CSV) or a project file. Values marked Typical are placeholders: check them against the datasheet.
H3C output now follows the official Comware 7 command reference: DHCP forbidden-ip moved to system view, banner delimiters, common DHCP pools no longer emit an extended-pool apply command, and VLAN templates fill both Name and Description.
JPEG, WebP and PDF downloads are now also in the WiFi Planner view, and every diagram on the My diagrams page has an Export image / PDF option in its menu that opens the export dialog directly.
The Topology editor is now labelled Beta. Export has its own dialog with a live preview: PNG, JPEG, WebP, SVG, PDF (A4, A3, Letter or fit-to-diagram), draw.io for editing in diagrams.net, and a .json backup. Choose resolution, theme, transparent background and whether to include the title and legend.
Built in the open. Vote on features, request templates, contribute on GitHub.
Free forever. Login is optional. No vendor lock-in. Built by network engineers who got tired of CLI typos.