Cisco 7975G Administration Manual page 177

Chapter 9 Troubleshooting and Maintenance
Table 9-1
Problem
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 4-36
Status menu displays 802.1X status as
"Failed" (see the
section on page 7-3
OL-12642-01
Cisco Unified IP Phone Security Troubleshooting (continued)
"802.1X
for more details).
"Status Menu"
for more details).
Cisco Unified IP Phone 7975G Administration Guide for Cisco Unified Communications Manager 6.0
Troubleshooting Cisco Unified IP Phone Security
Possible Cause
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 authentication is enabled on
the phone, but the phone is unable to
authenticate.
Verify that you have properly
1.
configured the required
components (see the "Supporting
802.1X Authentication on Cisco
Unified IP Phones" section on
page 1-16 for more information).
Confirm that the shared secret is
2.
configured on the phone (see
the"802.1X Authentication and
Status" section on page 4-36
more information).
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.
for
9-9