Cisco 7961G-GE - IP Phone VoIP Administration Manual page 235

Chapter 9 Troubleshooting and Maintenance
Table 9-1 Cisco Unified IP Phone Security Troubleshooting (continued)
Problem
Phone cannot authenticate any of the
configuration files other than the
CTL file.
Phone reports TFTP authorization
failure.
Phone does not register with Cisco
Unified Communications Manager.
Phone does not request signed
configuration files.
802.1X Enabled on Phone but Not Authenticating
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"
802.1X Authentication Status
displays as "Held" (see the
Authentication and Status" section
on page 4-48).
Status menu displays 802.1x status
as "Failed" (see the "Call Statistics
Screen" section on page
802.1X Not Enabled
Cisco Unified IP Phone 7961G/7961G-GE and 7941G/7941G-GE for Cisco Unified Communications Manager 6.0
OL-11953-01
Possible Cause
Bad TFTP record.
The TFTP address for the phone does not exist in the CTL
•
file.
If you created a new CTL file with a new TFTP record, the
•
existing CTL file on the phone may not contain a record for
the new TFTP server.
The CTL file does not contain the correct information for the
Cisco Unified Communications Manager server.
The CTL file does not contain any TFTP entries with
certificates.
These errors typically indicate that 802.1X is enabled on the
phone, but the phone is unable to authenticate.
Verify that you have properly configured the required
1.
components
Unified IP Phones" section on page
Confirm that the shared secret is configured on the phone
2.
(see the
page 4-37
"802.1X
If the shared secret is configured, verify that you have
–
the same shared secret entered on the authentication
server.
If the shared secret is not configured, enter it and ensure
–
that it matches the one on the authentication server.
7-17).
Troubleshooting Cisco Unified IP Phone Security
"Supporting 802.1X Authentication on Cisco
"Security Configuration Menu" section on
for more information).
1-23.
9-13