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Chapter 9 Troubleshooting and Maintenance
Troubleshooting Cisco Unified IP Phone Security
9-14
Cisco Unified IP Phone 7970G/7971G-GE for Cisco Unified Communications Manager 6.0
OL-12232-01
802.1X Enabled on Phone but Not Authenticating
Phone cannot obtain a DHCP-assigned
IP address.
These errors typically indicate that
802.1X authentication is enabled on
the phone, but the phone is unable to
authenticate.
1. Verify that you have properly
configured the required
components (see the “Supporting
802.1X Authentication on Cisco
Unified IP Phones” section on
page 1-23 for more information).
2. Confirm that the shared secret is
configured on the phone (see
the“802.1X Authentication and
Status” section on page 4-51 for
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.
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 “802.1X
Authentication and Status” section on
page 4-51 for more details).
Status menu displays 802.1X status as
“Failed” (see the “Status Menu”
section on page 7-3 for more details).
Table 9-1 Cisco Unified IP Phone Security Troubleshooting (continued)
Problem Possible Cause
250


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