Cisco Systems 7970G manual 802.1X Not Enabled

Chapter 9 Troubleshooting and Maintenance

Troubleshooting Cisco Unified IP Phone Security

Table 9-1 Cisco Unified IP Phone Security Troubleshooting (continued)

Problem

Possible Cause

802.1X Not Enabled

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 “Disabled” (see the “802.1X Authentication and Status” section on page 4-42for more details).

Status menu displays DHCP status as timing out (see the “Status Menu” section on page 7-3for more details).

These errors typically indicate that 802.1X authentication is not enabled on the phone. To enable it, see the “802.1X Authentication and Status” section on page 4-42for information on enabling 802.1X authentication on the phone.

Factory Reset Deleted 802.1X Shared Secret

Phone cannot obtain a DHCP-assigned IP address.

Phone does not register with

Cisco Unified CallManager.

Phone status display as “Configuring IP” or “Registering”.

Cannot access phone menus to verify 802.1X status.

These errors typically indicate that the phone has completed a factory reset (see the “Performing a Factory Reset” section on page 9-19) while 802.1X was enabled. A factory reset deletes the shared secret, which is required for 802.1X authentication and network access. To resolve this, you have two options:

•Temporarily disable 802.1X authentication on the switch.

•Temporarily move the phone to a network environment that is not using 802.1X authentication.

Once the phone starts up normally in one of these conditions, you can access the 802.1X configuration menus and re-enter the shared secret (see the “802.1X Authentication and Status” section on page 4-42).

	Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.1 (SIP), Cisco Unified IP Phones
9-14	OL-11524-01