Vxlan

You can build a fully functional VXLAN EVPN leaf-spine fabric on EVE-NG using free Nexus 9000v images — no physical Nexus switches or expensive hardware required. This guide walks through the complete stack from underlay IGP to L3VNI inter-VXLAN routing, with every NX-OS command you need and verification steps at each stage. Key Takeaway: VXLAN EVPN is the dominant fabric technology on the CCIE Data Center v3.1 blueprint, and with Cisco ACI shifting toward NDFC-managed NX-OS fabrics, hands-on CLI-based VXLAN EVPN skills are now non-negotiable for passing the lab exam. ...

Cisco Software-Defined Access (SDA) is a three-plane fabric architecture that replaces traditional campus designs — spanning tree, HSRP, manual VLAN trunking — with a fully automated, identity-aware overlay network. LISP handles the control plane, VXLAN handles the data plane, and TrustSec handles the policy plane, all orchestrated through Catalyst Center. Key Takeaway: Understanding how LISP, VXLAN, and TrustSec interact at the packet level is what separates engineers who can troubleshoot SDA fabrics from those who just click buttons in Catalyst Center — and it’s exactly what the CCIE Enterprise Infrastructure lab tests. ...

Cisco just booked $2.1 billion in AI infrastructure orders from hyperscalers in a single quarter — up from $1.3 billion the quarter before. Their networking product orders surged over 20% year-over-year. If you hold a CCIE Enterprise Infrastructure or you’re studying for one, your skills just became significantly more valuable. The “networking is boring” era is officially dead. Key Takeaway: AI workloads are driving the biggest networking investment cycle in a decade, and the protocols tested on the CCIE EI lab — BGP, VXLAN/EVPN, SD-WAN, QoS — are exactly what hyperscalers and enterprises need to build AI-ready infrastructure. ...

Cisco ACI and VMware NSX are the two dominant data center SDN platforms, but they solve fundamentally different problems. ACI is a hardware-integrated fabric that manages both physical and virtual infrastructure through an application-centric policy model. NSX is a hypervisor-based overlay that virtualizes networking entirely in software. In 2026, the landscape has shifted dramatically — Broadcom’s acquisition of VMware has disrupted NSX licensing, while ACI continues to deepen its VXLAN EVPN integration. For CCIE Data Center candidates, understanding both platforms (and why employers want ACI expertise specifically) is a career differentiator. ...

Master VXLAN EVPN multi-homing with ESI on Cisco Nexus 9000. Configuration guide with NX-OS examples and troubleshooting commands.