https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Sat, 16 May 2026 00:00:00 GMT https://www.youngju.dev/blog/culture/2026-05-16-network-simulators-emulators-2026-mininet-gns3-eve-ng-cisco-cml-containerlab-ns3-omnet-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-16-network-simulators-emulators-2026-mininet-gns3-eve-ng-cisco-cml-containerlab-ns3-omnet-deep-dive.en How far has the virtual lab for network engineers come? The fundamental distinction between simulators and emulators, the 2026 state of container-based (Mininet · Containerlab · Kathara), VM-based (GNS3 · EVE-NG · PNetLab), Cisco-specific (CML 2 · Packet Tracer · DevNet Sandbox), research-grade (NS-3 · OMNeT++ · SimPy), SDN/OpenFlow (OVS · ONOS · OpenDaylight), and 5G/wireless (NS-3 LTE · OAI · srsRAN · Open5GS) tools. CCNA/CCNP/CCIE learning paths, SDN development, pre-production validation workflows, Korean/Japanese communities (JANOG, CCIE Korea), and which tool to actually pick when — with 20+ real reference URLs. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) network-simulatormininetgns3eve-ngcisco-cmlcontainerlabns-3omnetpacket-tracernetwork-engineeringenglish https://www.youngju.dev/blog/culture/2026-05-16-network-simulators-emulators-2026-mininet-gns3-eve-ng-cisco-cml-containerlab-ns3-omnet-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-16-network-simulators-emulators-2026-mininet-gns3-eve-ng-cisco-cml-containerlab-ns3-omnet-deep-dive.ja ネットワークエンジニアの仮想ラボはどこまで進化したのか。シミュレータとエミュレータの本質的な違い、コンテナベース(Mininet · Containerlab · Kathara)・VMベース(GNS3 · EVE-NG · PNetLab)・Cisco専用(CML 2 · Packet Tracer · DevNet Sandbox)・研究用(NS-3 · OMNeT++ · SimPy)・SDN/OpenFlow(OVS · ONOS · OpenDaylight)・5G/無線(NS-3 LTE · OAI · srsRAN · Open5GS)ツールの2026年現況。CCNA/CCNP/CCIE学習パス、SDN開発、事前検証ワークフロー、韓国・日本コミュニティ(JANOG · CCIE Korea)、そして本当にどのツールをいつ使うべきかまで — 20以上の実URLリファレンス付き。 Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) network-simulatormininetgns3eve-ngcisco-cmlcontainerlabns-3omnetpacket-tracernetwork-engineering日本語 https://www.youngju.dev/blog/culture/2026-05-16-network-simulators-emulators-2026-mininet-gns3-eve-ng-cisco-cml-containerlab-ns3-omnet-deep-dive https://www.youngju.dev/blog/culture/2026-05-16-network-simulators-emulators-2026-mininet-gns3-eve-ng-cisco-cml-containerlab-ns3-omnet-deep-dive 네트워크 엔지니어의 가상 실험실은 어디까지 발전했는가. 시뮬레이터와 에뮬레이터의 본질적 차이, 컨테이너 기반(Mininet · Containerlab · Kathara)·VM 기반(GNS3 · EVE-NG · PNetLab)·Cisco 전용(CML 2 · Packet Tracer · DevNet Sandbox)·연구용(NS-3 · OMNeT++ · SimPy)·SDN/OpenFlow(OVS · ONOS · OpenDaylight)·5G/무선(NS-3 LTE · OAI · srsRAN · Open5GS) 도구의 2026년 현황. CCNA·CCNP·CCIE 학습 경로, SDN 개발, 사전 검증 워크플로, 한국·일본 커뮤니티(JANOG·CCIE 한국), 그리고 진짜로 어떤 도구를 언제 써야 하는지까지 — 20+ 실제 URL 레퍼런스와 함께. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) network-simulatormininetgns3eve-ngcisco-cmlcontainerlabns-3omnetpacket-tracernetwork-engineering