You have 30 minutes. Find the BGP problem.
A session is Established, prefixes are received — and traffic still takes the wrong exit. Where do you look first?
Routing · BGPHome/Resources
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How to approach an eight-hour lab in the first fifteen minutes
Survey, dependency map, time budget. Why the best candidates don't touch a device straight away.
Methodology · 8 min readVerification that proves outcomes, not configuration
The difference between "the config is there" and "the requirement is met" — with examples.
Methodology · 6 min readHow an expert troubleshoots a redistribution loop
From symptom to root cause in five disciplined steps — and the three tempting shortcuts to avoid.
Routing · 10 min readTrade-offs you should be able to defend
Summarisation vs. optimal routing, simplicity vs. flexibility. How to explain a design choice under questioning.
Architecture · 9 min readFrom senior engineer to network architect
The skills that change when your job becomes making decisions rather than implementing them.
Career · 7 min readArticles are published weekly. Subscribe below to get new challenges first.
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