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Cisco ACI Fundamentals Lab Part 1
This lab is the Cisco ACI Fundamentals Lab Part 1, and after completion, the student can launch Cisco ACI Fundamentals Lab Part 2 to complete the entire lab. The lab uses the ACI virtual simulator based on ACI Version 6, emulating an APIC, 2 leafs, and a spine. Part 2 uses a shared physical ACI fabric to complete the policy and verify data plane connectivity.
The ACI Virtual Simulator was needed to demo the building of the ACI fabric from scratch, bootstrapping the APIC, adding the spine and leafs, fabric discovery, and completing VMM integration. Since the Cisco ACI Fundamentals Lab, Part 2 is a shared on-demand environment, to decouple the APIC build process from the APIC policy creation. Due to limitations, the virtual ACI fabric is a control plane-only simulator, and no data plane testing (Ping, SSH) can get done for validation. Cisco ACI Fundamentals Lab Part 2 uses a Tenant inside of a physical ACI, and data plane functionality can get tested ( Ping, SSH)
Network Engineering Foundations
This Learning Series covers the fundamentals of network engineering. Through hands-on labs and real-world examples, you will develop the practical skills necessary to build and maintain robust networks. It is perfect for aspiring network engineers, IT professionals, or anyone interested in understanding the backbone of today's interconnected world.
6 Steps to Understanding Cisco ACI
When understood, these six concepts will help anyone new to ACI to understand a more detailed technical discussion.
Arista EVPN VXLAN 101 Lab
This Arista MP-BGP EVPN Lab provides exposure to the new technology and capabilities of the products used. This lab introduces the Arista Cloud Vision Portal(CVP) and introduces students to the basics of building the VXLAN L3LS Underlay, MP-BGP overlay, MLAG, Asymmetric and Symmetric IRB, and eternal L2/L3 connectivity. It also provides an in-depth look at Arista Cloud Vision Portal(CVP) and how to use it for day 0,1 building and day 2 operations. 3 VXLAN EVPN scenarios based on best practices from the Arista design guides, ACE3 course material, Arista TAC support the Arista EOS forum posts. There are many different ways to create an Arista-based VXLAN EVPN fabric; these labs present a migration phase from a standard 3 tier VLAN and SVI-based network to a VXLAN fabric, Then the fabric changes to using Asymmetrical IRB and Symmetrical IRB. BGP routing is the underlay, overlay and connectivity to the remote data center under migration.
Understanding Data Center Quantized Congestion Notification (DCQCN)
RoCEv2 is a solution for achieving swift data throughput and minimal delay in modern data centers. It incorporates features like Priority Flow Control (PFC) and Explicit Congestion Notification (ECN) to establish a lossless network environment. PFC manages data flow at the interface level, while ECN detects and mitigates congestion before PFC activation becomes necessary. The combination of ECN and PFC, known as Data Center Quantized Congestion Notification (DCQCN), optimizes congestion management in RDMA networks. Careful tuning of queue thresholds is crucial to prevent hot spots and ensure low Job Completion Times (JCTs). The use of ECN and PFC is necessary for maintaining a lossless fabric in GPU-to-GPU communication during AI/ML training runs.
What's new
AI's Invisible Bottleneck: Why AI Stalls at the Network, not the GPU
For many, AI success isn't limited by how many GPUs you can buy; it's limited by how fast those GPUs can talk to each other without tripping over the plumbing. In this episode of the AI Proving Ground Podcast, two of WWT's top networking minds —Justin van Schaik and Eric Fairfield — lay out the real choke points slowing AI projects to a crawl and how powerful, modernized network architectures are quietly rewriting the rulebook for scaling AI.
The Versatile Data Center Smart Switch: Cisco N9300
The Cisco Nexus N9300 Smart Switch revolutionizes data center infrastructure with its convergence of high-performance switching, network security and application services. Featuring Cisco Silicon One ASICs and a Data Processing Unit, it offers intelligent, service-aware capabilities. Optional Hypershield enhances zero-trust security, making it ideal for AI, hybrid cloud and security-conscious environments.
Cisco Live 2025: Data Center Networking Innovation Key Takeaways
At Cisco Live 2025, Cisco unveiled a bold vision for the future of data center networking—one that embraces AI scalability, embedded security and cloud-operational simplicity. From game-changing switch architectures to hyper-intelligent security tools, Cisco's announcements focused on building the AI-native, zero-trust and observability-rich data center of tomorrow. Here are five of the most impactful innovations announced.
G42 establishes Europe & UK subsidiary, eyes AI infrastructure growth
The establishment of the new entity follows G42's increasing presence in Europe, which includes recent announcements of data centres and compute clusters in France and Italy.
WWT at ONUG AI Networking Summit—Dallas 2025
At ONUG AI Networking Summit—Dallas 2025, WWT delivered fresh AI insights and real-world strategies that are reshaping networking, infrastructure and enterprise transformation.
The $2.3 Trillion Question: Why 84% of Digital Transformations Still Fail
Discover why most digital transformations struggle and learn practical strategies for success! This post explores how shifting from technology-first to business-first thinking can dramatically improve outcomes. Get actionable tips for aligning technology with real business needs and creating meaningful change that actually works.
From Cost Center to Strategic Enabler: Building the Business Case for NOC Modernization
In today's hyper-connected, always-on digital economy, businesses can no longer afford for their Network Operations Center (NOC) to be a passive, reactive function. What was once considered a cost center can now become a strategic enabler — one that drives uptime, customer and associate satisfaction, and competitive agility. NOC modernization isn't just a technical upgrade; it's a business imperative.
Hidden Infrastructure Demands of Enterprise AI
As AI pushes the limits of traditional IT infrastructure, enterprises are racing to modernize their data centers. In this episode, Mike Parham and Bruce Gray walk us through the behind-the-scenes decisions that matter — from power and cooling challenges to GPU readiness and sustainability. Whether you're modernizing or starting from scratch, this conversation is your blueprint for AI-ready infrastructure.
Day-2 Operations: The Critical Data Center Network Component
While Day 0 planning and Day 1 deployment capture initial attention, Day 2 operations—ongoing monitoring, automation, compliance and optimization—account for up to 70 percent of total data center network costs. Without a proactive strategy, enterprises face rising expenses, outages and security risks. To reduce TCO and improve resilience, organizations are adopting AI-driven and automated platforms like Arista CloudVision and Cisco Nexus Dashboard to streamline Day 2 tasks. Investing in visibility, operational simplicity and intelligent automation is now essential for long-term success.
Cisco Networking: Configuring OSPF
This configuration workbook lab is designed to provide learners with a comprehensive understanding of OSPF (Open Shortest Path First) routing in Cisco networks. Participants will learn to configure OSPF across multiple areas, implement OSPF neighbor relationships, and manage route summarization and redistribution. The lab will also explore advanced OSPF concepts such as stub areas, NSSA, and virtual links. By the end of the lab, learners will be able to validate OSPF operations using show commands and debug tools, ensuring proper route propagation and stable network convergence in real-world routing environments.
Assessing AI Workloads: How to Choose the Right Environment for Enterprise AI
Where should your AI workloads run? It's one of the most overlooked questions in AI strategy. From surprising constraints around power, cooling and floor space, to the growing demand for GPU-as-a-Service models, this episode delivers a field-level view of the challenges enterprises face when moving from AI proof of concept to production. You'll hear why infrastructure readiness assessments are essential, how AI workloads differ from traditional IT, and what to consider before buying that next GPU cluster.
MP-BGP EVPN VXLAN for the beginner
The article below covers VXLAN encapsulation and how MP-BGP is used to learn and forward layer two and layer three traffic across the encapsulation. To better understand the content, we recommended that readers have prior knowledge of BGP and the MP-BGP routing protocol. For those unfamiliar with these concepts, we suggest reading our foundational learning path's "MP-BGP for the beginner" article beforehand. It's important to note that MP-BGP EVPN VXLAN may initially seem intimidating, but this beginner's guide will clearly understand how it works. It's a technology that has gained popularity over the last few years, with many companies adopting it.
4 Benefits of a SaaS-Managed Data Center Fabrics: Cisco Nexus Hyperfabric
Cisco Nexus Hyperfabric is an innovative solution that integrates local switches with SaaS-based management. It is designed to be scalable, secure and simple to deploy.
Key Takeaways from the OFC 2025 Conference
Members of WWT's Core Networking Team share their key takeaways and insights from the Optical Fiber Communications Conference 2025.
The Future of Intent-based Networking and Multi-domain Architectures: Part II
The second in our series, this article explores what intent-based networking (IBN) is and how organizations can leverage it to build multi-domain architectures.
The Future of Intent-based Networking and Multi-domain Architectures: Part I
This series of articles will explore what intent-based networking (IBN) is and how organizations can leverage it to build multi-domain architectures. As more organizations embrace these architectures, WWT is seeing a change in networking the likes which haven't been seen in many years.
The Future of Intent-based Networking and Multi-domain Architectures: Part III
The last in a series of articles exploring intent-based networking, this article focuses on the art of the possible as it pertains to linking all the disparate SDN domains.
VMware NSX-T Virtual Lab
This is an On-Demand Lab for VMware NSX-T. It provides the same lab experience as the one day NSX-T training class but without the slide content and on-site architect. This lab is not meant to teach operations, best practices or replace VMware's hands-on classes.
Use the NEXUS Dashboard Free Trial to Proactively Monitor Your ACI Fabric
Learn how to create a 90-day POC to verify fabric performance, troubleshoot issues and validate the usefulness of the NEXUS Dashboard and day 2 operations suite.
Use the NEXUS Dashboard Free Trial to Proactively Monitor Your ACI Fabric (Part 2)
The second part in this white paper series illustrates the use cases for NEXUS Insight Application to proactively monitor and maintain your ACI fabric.