Containerlab & Topology Engineering

All technical articles related to Containerlab & Topology Engineering.

• When Local Success Hides a Shared-Runner Failure

  19 Oct, 2026

  Technical deep dive into When Local Success Hides a Shared-Runner Failure

• Why Identical Topologies Fail Only in CI

  6 Oct, 2026

  Technical deep dive into Why Identical Topologies Fail Only in CI

• Reusable Harnesses Without Topology-Coupled Assertions

  28 Sep, 2026

  Technical deep dive into Reusable Harnesses Without Topology-Coupled Assertions

• Catching cable swaps before the first test packet

  22 Sep, 2026

  Technical deep dive into Catching cable swaps before the first test packet

• It is only a lab is not a security model

  19 Sep, 2026

  Technical deep dive into It is only a lab is not a security model

• Hidden offloads that lie to your packet capture

  27 Jul, 2026

  Technical deep dive into Hidden offloads that lie to your packet capture

• CLI, Scripts, and LLMs for Bring-Up Triage

  21 Jul, 2026

  Technical deep dive into CLI, Scripts, and LLMs for Bring-Up Triage

• Why readiness goes green while forwarding stays dead

  6 Jul, 2026

  Technical deep dive into Why readiness goes green while forwarding stays dead

• Bridge OVS or macvlan for external ports

  4 Jul, 2026

  Technical deep dive into Bridge OVS or macvlan for external ports

• Baked configs versus mounts versus generated startup

  3 Jul, 2026

  Technical deep dive into Baked configs versus mounts versus generated startup

• Canarying a live trunk into containerlab safely

  19 Jun, 2026

  Technical deep dive into Canarying a live trunk into containerlab safely

• Can AI help with lab-host preflight drift

  12 Jun, 2026

  Technical deep dive into Can AI help with lab-host preflight drift

• Why cloned images lose tcpdump and raw sockets

  8 Jun, 2026

  Technical deep dive into Why cloned images lose tcpdump and raw sockets

• Deterministic Enough Means Defining a Repeatability Contract

  28 May, 2026

  Technical deep dive into Deterministic Enough Means Defining a Repeatability Contract

• Bringing mirrored production traffic into a lab safely

  10 May, 2026

  Technical deep dive into Bringing mirrored production traffic into a lab safely

• AI guardrails for deprecated node kinds and images

  8 May, 2026

  Technical deep dive into AI guardrails for deprecated node kinds and images

• Bootstrapping hardware in CI before container tests

  7 May, 2026

  Technical deep dive into Bootstrapping hardware in CI before container tests

• Image provenance gates before CI lab execution

  24 Apr, 2026

  Technical deep dive into Image provenance gates before CI lab execution

• Stopping startup storms with phased boot gates

  27 Mar, 2026

  Technical deep dive into Stopping startup storms with phased boot gates

• Host sysctl preflight for big Containerlab runs

  27 Mar, 2026

  Technical deep dive into Host sysctl preflight for big Containerlab runs

• Scaling a Self-Healing Containerlab Pipeline

  24 Mar, 2026

  Technical deep dive into Scaling a Self-Healing Containerlab Pipeline

• BGP State Mismatch in Containerlab

  19 Mar, 2026

  Technical deep dive into BGP State Mismatch in Containerlab