Book · 2011
Network Warrior
by Gary A. Donahue
Gary Donahue's field manual for the network engineer who inherits a closet full of Cisco gear and has to keep packets moving by Monday.
What does Reddit think of Network Warrior?
Network Warrior is a quiet entry on Reddit. That isn't a verdict so much as a shape: the book shows up on the canonical r/sysadmin "Nerd Books" recommendation list next to the Cisco CCNA 200-301 two-volume set and the discontinued CCDA materials, and nobody bothers to argue about it. The top-voted appearances (↑58, ↑43) are list posts where a networking-focused sysadmin is answering somebody's career question and pasting their bookshelf. Last sighting was June 2025. r/networking, r/devops, r/programming, r/cscareerquestions don't mention it in the window we scraped. Treat the Reddit signal here as a presence check, not an endorsement: the people who reach for it are sysadmins who do networks on the side, and they recommend it without writing a sentence about why.
Community feedback & reader fit
Themes
- · Cisco-shaped worldview
- · the on-call sysadmin who also runs the network
- · real-world topology over exam memorization
- · r/sysadmin booklist canon
Common praise
- + Sysadmins keep pasting it into r/sysadmin booklist replies next to the CCNA 200-301 set, which is its own kind of endorsement.
- + The ↑58 thread treats Donahue as the practical complement when somebody's already grinding cert material.
- + It survives on the recommendation list across multiple years (2022, 2023, 2025) without anyone showing up to dunk on it.
Common criticism
- − Nobody on Reddit actually writes about what's in it; the mentions are bibliography drops, not arguments.
- − Zero traction outside r/sysadmin in the seven-year window — r/networking doesn't bring it up.
- − The Cisco-centric framing dates the book if you work in a cloud-first or vendor-mixed shop, and no commenter defends it on that front.
Who it's for
You inherited a wiring closet, you can ping a default gateway in your sleep, and your CCNA materials feel like they're teaching to the test instead of to the building you actually work in. Read Network Warrior alongside the Cisco 200-301 set the way r/sysadmin's booklist suggests. If you live in r/networking and your day is BGP policy and SD-WAN vendor wars, this won't be your daily driver. Cloud-native engineers who never touch a switch can pass.
Mentions over time
Top subreddits
Which Reddit comments matter for Network Warrior?
Top-upvoted quotes across the subreddits where this book is mentioned. Click through to read the full thread.
“It's not insane... but it's not ideal either. SELinux didn't launch until 2000, and that's a pretty significant change in Linux fundamentals. ----- Nerd Books: [Cisco CCNA Certification, 2 Volume Set: Exam 200-301](
Convinced? Pick up Network Warrior
Readers also mention
Books that share discussion threads with Network Warrior — counted from the comments, not curated.
The Practice of Network Security Monitoring
Richard Bejtlich
Richard Bejtlich's field manual for catching intruders by watching the wire, built around Security Onion and the assumption that prevention will fail.
Practical Packet Analysis
Chris Sanders
Chris Sanders walks you through Wireshark captures of real attacks, slow networks, and broken handshakes until the protocol stack stops being abstract.
The Practice of Cloud System Administration
Thomas A. Limoncelli
Limoncelli's Volume 2 on running large distributed web services, the one r/sysadmin keeps listing right next to Volume 1 and rarely talks about on its own.
The Practice of System and Network Administration
Thomas A. Limoncelli
Thomas Limoncelli's field manual for the sysadmin who wants to stop firefighting and start running a shop that doesn't wake them up at 3 a.m.
TCP/IP Illustrated, Vol. 1
W. Richard Stevens
W. Richard Stevens wrote 24 Reddit-cited pages per year's worth of networking protocol detail so you'd stop guessing what's on the wire.
Network Warrior — frequently asked
Is Network Warrior still worth reading in 2026?+
Depends on the job. r/sysadmin still lists it in 2025 next to the CCNA 200-301 two-volume set, and the top-voted recommendation (↑58) treats it as a sensible practical companion. But it's a Cisco-shaped book from an earlier era of enterprise networking, and nobody on r/networking is championing it. If you're the sysadmin who also runs the LAN, yes. If you're chasing modern BGP or cloud networking, look elsewhere.
What does Reddit actually say about Network Warrior?+
Not much. Six mentions over seven years, all in r/sysadmin, sentiment 0.00, three unique commenters. The appearances are bibliography pastes — someone answers a career question and includes Network Warrior in their "Nerd Books" list. No one defends it in a sentence, no one attacks it. Last appearance was June 2025. Treat it as quietly canonical inside r/sysadmin and invisible everywhere else.
Should I read Network Warrior before or after the Cisco CCNA materials?+
After, or in parallel. The ↑58 r/sysadmin comment pairs it explicitly with the Cisco CCNA Certification 200-301 two-volume set, framing the cert books as the exam track and Donahue as the on-the-job context. The CCDA cert that older booklists referenced is discontinued, so don't use that as a structuring guide. CCNA first for the vocabulary, Network Warrior to see what the vocabulary looks like in a real closet.
Who is Network Warrior for?+
The sysadmin who got handed the network. Every Reddit mention we found comes from r/sysadmin, and the top-voted one (↑43) is from someone who says "most of my responses are networking specific, because I primarily work on networks" while sitting in the sysadmin sub. That's the reader. If you're a pure network engineer in r/networking or a cloud platform engineer, this isn't aimed at you.