Guides
Short answers to the questions people actually ask. No filler.
Each guide covers one topic, cites its sources, and links to the live data on this site. Written for network engineers, not marketing leads.
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What Is End-of-Life?
What EOL actually means for network hardware. The vendor stops patching, you stop sleeping. Definition, timeline, and what happens after.
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EOL vs. EOS vs. EOSL
End-of-Sale is not End-of-Life. Confusing the two costs money — either panic-replacing gear that's still supported, or running gear that isn't.
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EOL Security Risk
Why threat actors scan for EOL devices first. No patches means no fix path. CISA KEV data shows it's not theoretical.
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EOL and Compliance
PCI-DSS, HIPAA, NYDFS, CISA BOD 26-02. Each one says something specific about unsupported hardware. Here's what, with clause numbers.
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How to Audit EOL Hardware
Pulling show-version from 400 switches and matching against vendor bulletins by hand is a bad use of your Thursday. There are better ways.
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EOL Replacement Planning
Timeline, budgeting, and sequencing a hardware refresh before the support date hits. Start with what's expiring soonest.
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Vendor Support Lifecycles
How vendors structure their lifecycle programs. Cisco's 5-year EoL runway is not Juniper's is not Palo Alto's. The differences matter for planning.
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Cisco End-of-Life Explained
Cisco publishes more lifecycle milestones than any other vendor. What each one means, when they hit, and which date is the one that actually matters.