Cisco 7970G - IP Phone VoIP Administration Manual page 247

Chapter 9 Troubleshooting and Maintenance
Table 9-1
Problem
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 4-51
Status menu displays 802.1X status as
"Failed" (see the
section on page 7-3
Cisco Unified IP Phone 7970G/7971G-GE Administration Guide for Cisco Unified Communications Manager 6.1
OL-14626-01
Cisco Unified IP Phone Security Troubleshooting (continued)
"802.1X
for more details).
"Status Menu"
for more details).
Troubleshooting Cisco Unified IP Phone Security
Possible Cause
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
802.1X Authentication on Cisco
Unified IP Phones" section on
page 1-22 for more
2. Confirm that the shared secret is
configured on the phone (see
the"802.1X Authentication and
Status" section on page 4-51
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.
"Supporting
information).
for
9-13