Chapter 9 Troubleshooting and Maintenance

 

 

Troubleshooting Cisco Unified IP Phone Security

 

Table 9-1

Cisco Unified IP Phone Security Troubleshooting (continued)

 

 

 

 

Problem

 

Possible Cause

 

 

 

Phone reports TFTP authorization failure.

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.

 

 

 

Phone does not register with Cisco

The CTL file does not contain the correct information

Unified CallManager.

for the Cisco Unified CallManager server or the

 

 

Cisco Unified CallManager does not have the valid

 

 

issuer of the phone’s certificate.

 

 

 

Phone does not request signed configuration

The CTL file does not contain any TFTP entries with

files.

 

certificates.

 

 

 

 

802.1X Enabled on Phone but Not Authenticating

Phone cannot obtain a DHCP-assigned IP address.

Phone does not register with

Cisco Unified CallManager.

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 4-42for more details).

Status menu displays 802.1X status as “Failed” (see the “Status Menu” section on page 7-3for more details).

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 1-18for more information).

2.Confirm that the shared secret is configured on the phone (see the “802.1X Authentication and Status” section on page 4-42for 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.

Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.1 (SIP), Cisco Unified IP Phones

 

OL-11524-01

9-13

 

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Cisco Systems 7970G manual 802.1X Enabled on Phone but Not Authenticating