Next-Hop.dev

  • Cisco

Simulating Link Failure and Latency with tc and netem

Make your lab behave like a real WAN. Add jitter, drop packets and watch convergence behave the way it will in production.

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7 min read
  • Palo Alto

Out-of-Band Management That You’ll Actually Be Glad You Built

Console servers, a separate path, and the failure modes a dedicated OOB network quietly saves you from at 3am.

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6 min read
  • Automation

From SSH Scripts to a Real Source of Truth with NetBox

Why a database beats a folder of YAML, and a migration path you can take one device type at a time without a big-bang cutover.

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9 min read
  • BGP

BGP Communities as Policy: A Pattern That Scales

Encode intent at the edge and let the core stay simple. A community scheme that has survived several network redesigns.

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7 min read
  • Python

Parsing Show-Command Output with TextFSM and ntc-templates

Turn messy CLI scrape into clean structured data, then feed it straight into a report without writing a single regex by hand.

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9 min read
  • Cisco

Chasing an Intermittent MTU Black Hole Across a VXLAN Overlay

A long debugging session reduced to the three commands and one packet capture that finally pointed at the real culprit.

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6 min read