GNPy: Optical Route Planning and DWDM Network Optimization

GNPy is an open-source, community-developed library for building route planning and optimization tools in real-world mesh optical networks. We are a consortium of operators, vendors, and academic researchers sponsored via the Telecom Infra Project's OOPT/PSE working group. Together, we are building this tool for rapid development of production-grade route planning tools which is easily extensible to include custom network elements and performant to the scale of real-world mesh optical networks.

GNPy with an OLS system

Quick Start

Install either via Docker, or as a Python package. Read our documentation, learn from the demos, and get in touch with us.

This example demonstrates how GNPy can be used to check the expected SNR at the end of the line by varying the channel input power:

Running a simple simulation example

GNPy can do much more, including acting as a Path Computation Engine, tracking bandwidth requests, or advising the SDN controller about a best possible path through a large DWDM network. Learn more about this in the documentation, or give it a try online at gnpy.app:

Official API

For more advanced integration and programmatic interaction with GNPy, you can refer to the official API available in the oopt-gnpy-api project. This REST API allows you to control and automate simulations, integrate GNPy into SDN architectures, or develop custom tools for network planning and optimization.

You can explore this API and its features by visiting the oopt-gnpy-api repository. It provides a flexible interface to leverage the full power of GNPy in your projects.

Project Calendar

See upcoming meetings on the Project Calendar. The calendar is embedded from Google Calendar and updates automatically.

Metadata

Release files for gnpy 3.0.1

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Built distribution (wheel)

Table of built distributions (wheels) for gnpy 3.0.1
File	Interpreter	ABI	Platform	Reset
gnpy-3.0.1-py3-none-any.whl 416.8 kB Sep 3, 2026	Python 3	none	any	Details

Release files / gnpy-3.0.1-py3-none-any.whl

Download URL	gnpy-3.0.1-py3-none-any.whl
Size	416.8 kB
Tags	Python 3
SHA-256 checksum How to use checksums	`c091907db2cd44787684c1ddcf6d9dcd53e25fb1b4cdba51041cf2a1f9345b49`
BLAKE2b-256 checksum How to use checksums	`e1448037288942599775938341eb815cd3d0d9c29f57e0e296f83e8902914bcb`
Upload date	Sep 3, 2026
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/7.0.0 CPython/3.12.14`