Every VLAN on every port, on one map.

L2Tag is a drawing and documentation tool. It has no connection to your network equipment.

• You fill in the map by hand: it doesn't read the configuration of a switch, and it doesn't change one.
• The map shows what you entered. Check Map finds contradictions inside the map, not differences with the real switch.
• It knows no brands or models. You set up a switch from a common template or your own layout, so it works for any brand.

Pick a common template, such as 24 ports + 4 SFP, or set your own layout under Custom:

• the number of ports, SFP uplinks and dual-personality ports, the rows, the gaps between port blocks and a label prefix such as Gi1/0/;
• odd ports on top, or numbering row by row;
• a label per port, for switches that number their ports differently.

A dual-personality port is one port with an RJ45 and an SFP socket. L2Tag draws both sockets, and a VLAN set on one shows on both.

A LAG counts as one unit: a VLAN change on any of its ports reaches all of them, and selecting one port selects the LAG. Plain uplinks link one port to one port on another switch.

• The two ends of a link stay separate, as they are on real switches. L2Tag doesn't copy VLANs across; Check Map reports a difference.
• A link goes from LAG to LAG or from port to port.

L2Tag is one signed program file. Start it from anywhere, a USB stick or your Downloads folder, and it runs. If you want it in the Start menu, choose Install L2Tag... in its menu: it copies itself to your user profile, adds a Start menu entry and an entry in Settings > Apps to uninstall it. No administrator rights are needed.

• Maps are .l2tag files you save where you like. Settings are kept in %APPDATA%\L2Tag.
• Uninstalling never removes your maps.
• To update an installed L2Tag, run the new version and choose Update Installed L2Tag....
• For a rollout: l2tag.exe --install --quiet installs without any window, --uninstall --quiet removes it again; the exit code is 0 on success.

L2Tag contacts guilderworks.com only to check for updates, and only if you allow it. It asks once, at first start, and you can change your answer in Check for Updates.

• The check downloads a public list of versions and compares it on your computer. Nothing about you, your computer or your maps is sent. As with any web request, the server sees the IP address the request comes from.
• It runs at most once a day. L2Tag never downloads or installs anything by itself; when there is a newer version, it opens a window that links to the updates page.
• For a rollout, an administrator can answer the question in advance by setting the value UpdateCheck to on or off under HKCU\Software\GuilderWorks\l2tag.

L2Tag has no account, no telemetry and no activation. Your maps stay on your computer. The only contact with guilderworks.com is the update check above, if you allow it.

Details are in the privacy statement.