# Javier Bits explains a switchless four-node DGX Spark ring

> Original title: This is how you can connect four @NVIDIAAI DGX Sparks without a switch!

- Source: X search: indie AI launches (I built, solo founder)
- Published: 2026-11-07T18:24:53.000Z
- Bad Influence: https://badinfluence.news/items/hoo08dcw2kitokf8wg3budsgl
- Original: https://x.com/javierbits/status/2119134005278716275

## Summary

Javier Bits says he connected four NVIDIA DGX Sparks in a closed ring without a switch, which NVIDIA's documentation does not support at four nodes. He rewired the cables as 1 → 2 → 4 → 3 → 1 so no link spans more than two units, and he had to remake the NFS mounts and SSH keys for the fourth Spark. He shares a bash script for the setup and notes that a switch is still needed for more than four nodes or for adding and removing machines without recabling.

## Post

This is how you can connect four @NVIDIAAI DGX Sparks without a switch!

tldr; it's a closed-ring, but not the kind you think of 👇 https://x.com/i/article/2117303230543659008