Verify Dhcp Setup - Cisco 7925G Administration Manual

Troubleshooting
To create a new configuration file, follow these steps:
Procedure
Step 1 From Cisco Unified Communications Manager, select Device > Phone > Find to locate the phone that is not
working properly.
Step 2 Choose Delete to remove the phone from the Cisco Unified Communications Manager database.
Step 3 Add the phone back to the Cisco Unified Communications Manager database. See
Communications Manager, on page 171
Step 4 Power cycle the phone.
Related Topics
Startup and Connectivity Problems, on page 209
Roaming and Voice Quality or Lost Connection Problems, on page 219
Common Phone Status Messages, on page 223

Verify DHCP Setup

To determine if the phone has been properly configured to use DHCP, follow these steps.
Procedure
Step 1
Verify that you have properly configured the phone to use DHCP. See
Step 2 Verify that the DHCP server has been set up properly.
Step 3 Verify the DHCP lease duration. Your local policy determines this setting.
Cisco Unified IP Phones send messages with request type 151 to renew their DHCP address leases. If the
DHCP server expects messages with request type 150, the lease is denied, forcing the phone to restart and
request a new IP address from the DHCP server.
Determine DNS or Connectivity Issues
To eliminate DNS or other connectivity errors, follow these steps.
Procedure
Step 1 Reset the phone to factory defaults. See
Step 2 Modify DHCP and IP settings:
a) Disable DHCP. See
for details.
Reset Phone to Factory Defaults, on page 228
DHCP Settings, on page 121
Cisco Unified Wireless IP Phone 7925G, 7925G-EX, and 7926G Administration Guide
Add Users to Cisco Unified
DHCP Settings, on page 121
for details.
Verify DHCP Setup
for details.
for details.
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