SD-WAN

Cumulative SASE spending across Security Service Edge (SSE) and SD-WAN will reach $97 billion over the 2025–2030 period, according to Dell’Oro Group’s February 2026 forecast. That figure is nearly three times the total SASE investment recorded during 2020–2024, signaling a structural shift from appliance-based network security to cloud-delivered architectures. For network engineers holding or pursuing CCIE Security, this acceleration creates both urgency and opportunity — the skills that defined network security for two decades are being reshaped around SASE-native design patterns. ...

Enterprise network budgets are expanding at the fastest pace in a decade — worldwide IT spending reaches $6.15 trillion in 2026, up 10.8% from 2025, according to Gartner’s February 2026 forecast. For CCIE candidates and certified engineers, the budget data isn’t just analyst noise — it’s a direct signal of which skills employers will pay premiums for over the next 3-5 years. SD-WAN crosses the $8B mark, cumulative SASE spending is forecast at $97B through 2030, Wi-Fi 7 adoption is accelerating faster than any previous wireless generation, and AI infrastructure is reshaping data center fabric spending entirely. ...

A Cisco Catalyst 8000V running on a $1/day AWS t3.medium instance gives you a production-grade hybrid cloud lab that connects to your on-prem CML or EVE-NG environment via IPsec VPN with BGP. This is the fastest way for a network engineer to get hands-on with cloud networking using real infrastructure instead of slides and diagrams. Key Takeaway: Building a hybrid cloud lab with AWS VPC and Cisco Catalyst 8000V costs under $2/day, teaches cloud networking fundamentals through a network engineer’s lens, and maps directly to CCIE EI v1.1 blueprint topics — making it the single best investment for bridging traditional and cloud networking skills. ...

AWS Transit Gateway, Azure Virtual WAN, and GCP Network Connectivity Center are the three dominant cloud-native networking hubs — and every network engineer moving into multi-cloud needs to understand how they differ. Each implements a hub-and-spoke model familiar to anyone who has configured DMVPN or SD-WAN, but the BGP peering models, route propagation behavior, and Cisco SD-WAN integration points vary significantly across all three platforms. Key Takeaway: Cloud networking hubs are not interchangeable — AWS Transit Gateway gives you the most granular routing control, Azure Virtual WAN provides the best globally distributed managed hub, and GCP Network Connectivity Center leverages Google’s premium backbone for highest raw performance. Understanding all three is essential for any CCIE candidate working in multi-cloud environments. ...

AT&T just showed network engineers what the future of carrier networks looks like — and it’s not just about moving packets. At MWC 2026, AT&T launched Connected AI for Manufacturing, a platform built with Nvidia, Microsoft, and MicroAI that pushes AI inference from the cloud to the factory floor over 5G. For network engineers, this is the clearest signal yet that telcos are evolving from connectivity providers into AI infrastructure platforms. ...

Building a functional Cisco SD-WAN lab on EVE-NG requires 64GB+ RAM, controller images at version 20.15+, and roughly 3–4 hours of setup time — but it gives you hands-on access to every SD-WAN component tested on the CCIE EI v1.1 lab exam. This is the single most important lab you can build for CCIE Enterprise Infrastructure preparation in 2026. Key Takeaway: SD-WAN covers five full subsections of the CCIE EI v1.1 blueprint (2.2.a through 2.2.e). A properly built EVE-NG lab with vManage, vBond, vSmart, and cEdge devices lets you practice every orchestration, control plane, and data plane scenario the exam throws at you. ...

CVE-2026-20127 is a maximum-severity (CVSS 10.0) authentication bypass vulnerability in Cisco Catalyst SD-WAN that has been actively exploited since 2023. Disclosed on February 25, 2026, it allows an unauthenticated remote attacker to bypass peering authentication on vSmart Controllers and vManage, gain admin-level access, reach the NETCONF interface, and manipulate routing and policy across an entire SD-WAN fabric. Five Eyes intelligence agencies issued a coordinated emergency advisory the same day, and CISA added it to the Known Exploited Vulnerabilities catalog within hours. ...