802.1X Scalability and High Availability Design for Large Enterprise Networks
Scaling 802.1X to thousands of ports means distributing ISE PSNs, templating switch configs, and planning for re-auth storms. Here is the large-enterprise HA design.
802.1X
Port-based network access control, the standard for authenticating users and devices onto wired and wireless networks. Articles tagged 802.1X cover supplicant and authenticator behavior, RADIUS, EAP methods, Cisco ISE, dynamic VLANs, dACLs, host modes, and phased deployment.
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802.1X on Cisco Switches: Step-by-Step Configuration Guide
Learn to configure 802.1X port-based network access control on Cisco switches — includes RADIUS setup, switch commands, troubleshooting, and best practices.