I learned very quickly that BGP isn’t just a routing protocol. It is a financial instrument. Here is how we used Local Pref to slash bandwidth …
Read ArticleWe ran out of allocatable IPv4 blocks. This wasn’t a theoretical exercise; it was an operational crisis. Here is the deep dive into how we …
Read ArticleThe promise of P2V (Physical-to-Virtual) was seamless migration. But when I tried to virtualize our Billing Server, I ended up with a Kernel Panic and …
Read ArticleIn the pre-cloud era, a 1 Gbps link was exactly 1 Gbps. If traffic hit 1.1 Gbps, the network broke. Here is how I used Cacti trend lines to predict a …
Read ArticleWe built our own Network Operations Center (NOC) stack with RANCID and Observium. It wasn’t pretty, but it was bulletproof. Here is how we achieved …
Read ArticleOn paper, a multi-vendor security strategy sounds sophisticated. In the trenches, it is a nightmare. Managing one vendor is a job; managing three is a …
Read ArticleFor those of us who have built the infrastructure that the cloud sits on, we know the truth. The cloud has weight. It has heat. And it has miles of …
Read ArticleI effectively DDoS-ed our own control plane from the inside. Here is the story of how I melted a core router by forgetting one line of code.
Read ArticleFor thousands of customers, ‘The Cloud’ is a focused beam of radio waves. I learned that you can’t route-map your way around a …
Read ArticleThe primary fiber was dead. The backup links were stalling. I learned a lesson that no textbook could teach: Redundancy is only real if you test it.
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