# SystemsApproach/book

Computer Networks: A Systems Approach -- Textbook

Repository: https://github.com/SystemsApproach/book
Canonical: https://ross.abutalabs.com/products/systemsapproach-book
Homepage: https://book.systemsapproach.org/
Language: Python
License: NOASSERTION
License Family: other
Last push: 2026-08-20T02:45:25+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 98, release rhythm 8, longevity 100
- inputs: {"age_days": 2973, "days_push": 13, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3382, forks 262 (observed 2026-08-28T04:07:58.656740+00:00)

## What it is
The open-source source text of the textbook 'Computer Networks: A Systems Approach' by Peterson and Davie, published online under a CC BY 4.0 license. It is a continuously updated book covering networking fundamentals from links and internetworking to congestion control and end-to-end data.

## Use cases
- learn computer networking fundamentals
- free networking textbook for a university course
- understand how TCP/IP and the Internet work
- study routing, switching, and congestion control
- reference for network architecture concepts
- find teaching material for a networks class

## When to choose
- you want a free, openly licensed, in-depth networking textbook
- you need course-ready material with a systems perspective on networking
- you want community-maintained, regularly updated networking content

## When to avoid
- you need hands-on lab exercises or runnable network software rather than prose
- you need a certification exam prep guide
- you want a quick reference or cheat sheet instead of a full textbook

## Facets
- artifact type: learning-resource
- maturity: active
- function: documentation
- domain: networking, education, tutorials
- platform: python
- tags: textbook, computer-networks, open-textbook, cc-by-4.0, systems-approach, web-server

## Member repositories
- SystemsApproach/book (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:58.656740+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:39:39.944998+00:00, confidence not recorded.
  - readme: https://github.com/SystemsApproach/book (fetched 2026-08-28T04:07:58.656740+00:00, sha 97fe057ca30e)
  - homepage: https://book.systemsapproach.org/ (fetched 2026-08-29T09:33:26.338271+00:00, sha 749a56e3a227)
  - site_page: https://book.systemsapproach.org/README.html (fetched 2026-08-29T09:33:26.347580+00:00, sha e033fabde3de)
- Data as of 2026-08-30T08:39:29.467469+00:00.