TrustSec

A usable Cisco ISE 3.x lab on EVE-NG is absolutely worth building for CCIE Security, because ISE shows up in authentication, policy, TrustSec, and operational troubleshooting far more often than most candidates expect. According to Cisco’s ISE 3.3 Installation Guide (2026), the evaluation baseline is 4 vCPU, 16 GB RAM, and 300 GB disk, but in real EVE-NG use most candidates should allocate 8 vCPU if they want the GUI, policy changes, and endpoint tests to feel responsive instead of miserable. ...

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 ISE combined with TrustSec is the most widely deployed zero trust network segmentation solution in enterprise environments today. It uses Scalable Group Tags (SGTs) to enforce identity-based access policies across switches, routers, and firewalls — replacing thousands of IP-based ACLs with a centralized policy matrix that follows users and devices wherever they connect. Key Takeaway: TrustSec SGT-based segmentation is the practical implementation of zero trust that enterprises are actually deploying in 2026, and mastering it is essential for both production network engineers and CCIE Security candidates. ...