~/field-notes
Field Notes.
Notes from the work: how the technologies behind networks and systems actually behave, how to configure them step by step, and what to check when they don't do what you expect.
Joining Linux Servers to Active Directory with MFA — Offline
How realmd, adcli, SSSD, Kerberos, PAM and RADIUS work together so engineers can log in to Linux with their domain credentials and a second factor, even on air-gapped servers
read →Cisco vPC vs Dell VLT: MLAG Explained
Colleagues often ask how Cisco vPC, Dell VLT, switch stacking and an ordinary port-channel differ. This article answers that in one place: why MLAG exists, how the three designs compare, how vPC and VLT work and fail, worked configurations for both, and notes for teams moving from Dell VLT to Cisco vPC.
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