# es4308cfg: reconstructing the Edgecore ES4308-PoE config format

> es4308cfg reconstructs the Edgecore ES4308-PoE switch's proprietary NVRAM configuration format from differential exports. The repository documents TLV framing, checksums, obfuscated strings and port-bit permutations, and provides Rust and Python codecs, a Kaitai specification and sanitized fixtures.

- Type: Case study
- Targets: Firmware
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-08
- Original resource: <https://github.com/dlorent/es4308cfg>
- Primary source: <https://github.com/dlorent/es4308cfg/blob/3435d03434009cee57c1a5421500b84fa6d661be/README.md>
- Catalog page: <https://awesomerea.org/resources/es4308cfg-case/>
- Record JSON: <https://awesomerea.org/resources/es4308cfg-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/es4308cfg-case/index.md)

## Requirements & limits

- **Prerequisites:** Python 3.9 or later for the Python tool; Rust and Cargo for the Rust codec.
- **Testing evidence:** The author reports validation against one ES4308-PoE unit; other units and firmware revisions may differ.
- **Limits:** Live write and restore code is quarantined after an NVRAM corruption incident.
- **License:** MIT License.

## Primary sources

1. <https://github.com/dlorent/es4308cfg/blob/3435d03434009cee57c1a5421500b84fa6d661be/README.md>
2. <https://github.com/dlorent/es4308cfg/blob/3435d03434009cee57c1a5421500b84fa6d661be/es4308cfg/docs/RE-NOTES.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.