Networks, automation, and what things actually cost
Network automation engineer - dual CCIE, 15 years of large-scale networks, now going deep on the fabrics behind AI. I automate, measure what it saves, and write it down.
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Why does EVPN/VXLAN exist? The problems that broke the old way
EVPN/VXLAN didn't appear because engineers wanted more acronyms. It appeared because the old network model broke under the demands of modern data centers.
The EVPN underlay has three jobs
EVPN gets the attention, but it moves nothing on its own. The layer underneath has exactly three jobs, and there are two very different ways to do them. I built both.
Recent Posts
BGP for EVPN: Type 2 and Type 3
How BGP carries EVPN routes using Type 2 and Type 3 advertisements, and why even a perfect control plane depends on a healthy underlay.
When automating triage quietly costs you money
I measured AI triage on 1500 closed GitHub issues across three real codebases. The cost case is real. But on one repo, automating would have silently mislabeled one issue in three — and the accuracy number gives you no warning.
Can AI Lower the Cost of Starting Over?
We keep asking which jobs AI will replace. Maybe the better question is whether AI can lower the cost of changing direction — and make starting over survivable.
Whose Walk Is It?
We used to walk without a destination. Now we walk 10,000 steps to close a ring. The walk is the same. But something is different.
We Live in the Present. But We Feel in the Past and Future
We live in the present, but somehow feel somewhere else — in a past that's gone or a future that won't come. The aftertaste of a life that almost was never fully disappears.