802.1X Enabled On Phone But Phone Does Not Authenticate; 802.1X Not Enabled - Cisco 7821 Administration Manual

Cisco IP Phone Security Problems
If all the following conditions apply,
• Phone cannot obtain a DHCP-assigned IP
address.
• Phone does not register with Cisco Unified
Communications Manager.
• Phone status displays Configuring IP or
Registering.
• 802.1X Authentication Status displays
Disabled.
• Status menu displays that the DHCP status has
timed out.
• Phone cannot obtain a DHCP-assigned IP
address.
• Phone does not register with Cisco Unified
Communications Manager.
• Phone status display as Configuring IP or
Registering .
• You are unable to access phone menus to verify
802.1X status.

802.1X Enabled on Phone but Phone Does Not Authenticate

Problem
The phone cannot authenticate.
Cause
These errors typically indicate that 802.1X authentication is enabled on the phone, but the phone is unable to
authenticate.
Solution
To resolve this problem, check the 802.1X and shared secret configuration. See
Problems, on page

802.1X Not Enabled

Problem
The phone does not have 802.1X configured.
Cisco IP Phone 7821, 7841, and 7861 Administration Guide for Cisco Unified Communications Manager 10.0
(SIP)
186
191.
See
802.1X Not Enabled, on page 186
Factory Reset of Phone Has Deleted 802.1X Shared
Secret, on page 187
Identify 802.1X Authentication