Introduction Mixed-vendor networks are the reality: Cisco campus switches, Aruba aggregation, Juniper edge, and multi-vendor controllers often coexist. Cisco ISE is commonly used as the central RADIUS/Policy engine — but different vendors implement RADIUS dynamic features (CoA/Disconnect/VSA) and 802.1X behavior with vendor-specific quirks. This masterclass […]
Introduction Mixed vendor environments are the norm — Aruba switches and controllers in some buildings, Juniper edge switches in another, Ruckus controllers in wireless zones, and maybe a small Cisco footprint. Cisco ISE must act as the central RADIUS and policy engine across all of […]
Introduction In modern enterprise networks, visibility and control stop at the perimeter if identity and DNS security are not tightly integrated. Cisco Identity Services Engine (ISE) provides context-rich, identity-based access control inside your network, but what happens once the user leaves the enterprise perimeter or […]
Introduction When Cisco ISE is the policy brain for 802.1X/MAB, VPN, and wireless access, a misstep in backups or a slow, incorrect restore means no logins, no network. Disaster Recovery (DR) in ISE isn’t just “take a backup.” It’s: Your objective today: build a production-grade, […]
Introduction Scalable Group Tags (SGTs) are the foundation of Cisco TrustSec—labels that identify “who” a packet belongs to, decoupled from IP or VLAN. The Scalable Group Tag eXchange Protocol (SXP) is the control-plane that ships IP↔SGT bindings from where they’re learned (typically access edges) to […]
Introduction In the enterprise wireless world, security is a game of trust — and trust starts with knowing exactly who is connecting to your network and proving they are who they claim to be. PEAP (Protected Extensible Authentication Protocol) with Cisco ISE is one of […]
![[Day 40] Cisco ISE Mastery Training: End-to-End Wired Authentication Lab Validation](https://networkjourney.com/wp-content/uploads/2025/08/Day-40-Cisco-ISE-Mastery-Training-End-to-End-Wired-Authentication-Lab-Validation.png)
Introduction In Cisco ISE deployments, lab validation is not just a “nice to have” — it’s the only way to confirm that your authentication policies work exactly as intended before you deploy them in production.End-to-end wired authentication lab validation means verifying every step of the […]
![[Day 37] Cisco ISE Mastery Training: Wired Redirection for Non‑Compliant Devices](https://networkjourney.com/wp-content/uploads/2025/08/Day-37-Cisco-ISE-Mastery-Training-Wired-Redirection-for-Non‑Compliant-Devices.png)
Introduction In the modern enterprise, it’s not enough to just authenticate a device — we must continuously ensure it complies with corporate policies. Cisco ISE’s Wired Redirection for Non-Compliant Devices enables you to catch endpoints that fail posture checks and redirect them to a remediation […]
Introduction In modern enterprise environments, a single Ethernet port often serves two devices simultaneously: Multi-Domain Authentication (MDA) enables these two devices to authenticate independently using 802.1X or MAB, ensuring role-based access control while maintaining proper VLAN segmentation. Without MDA, your security posture weakens — either […]
![[Day 23] Cisco ISE Mastery Training: Guest VLAN & Critical VLAN Configuration](https://networkjourney.com/wp-content/uploads/2025/08/Day-23-Cisco-ISE-Mastery-Training-Guest-VLAN-Critical-VLAN-Configuration.png)
Introduction In enterprise networks, wired access security using 802.1X or MAB can occasionally fail due to endpoint configuration issues, missing certificates, or network downtime. When authentication fails, what happens to the user or device? Without proper handling, devices may be completely cut off from the […]
