A municipal hospital campus sees a new laptop fail wired 802.1X before any authorization ACL is applied. Where should engineers first confirm the EAP exchange is progressing?
Select an answer to reveal the explanation.
Short Explanation
If the laptop never finishes shaking hands, check the door and the badge office—not the parking garage. EAPOL lives on the access switch; RADIUS carries the conversation to ISE. Confirm those hops before chasing DHCP or firewall rabbit holes.
Full Explanation
Wired 802.1X troubleshooting follows the authentication process: EAPOL between supplicant and authenticator, then RADIUS between authenticator and authentication server. Failures often appear as missing EAPOL, rejected identities, or RADIUS timeouts before any dACL/VLAN is applied. DHCP typically occurs after successful authorization for data traffic. Firewalls and BIOS settings are not the first place to validate EAP progression.