WRITING
FIELD NOTES
The migration workbook: how I make risky network changes boring
About 900 access points, 190 WLANs, sixteen Catalyst 9800 controllers across four regional datacenters, and an AAA migration to a parallel-built ISE 3.x environment nobody noticed. The method: audit first, pre-stage everything, cut over with the radios.
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How I moved 45,000 endpoints to 802.1X without anyone noticing
Founding a Cisco ISE initiative from scratch, the architecture decisions that carried it from a 4-node cluster to 14 nodes across five global datacenters, and the monitor-first rollout that grew into 60K+ endpoints behind 802.1X.
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