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Cisco Systems 4.2 Modifying DHCP Settings, Enabling DHCP, Releasing a DHCP Address, page, 4-13

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Modifying DHCP Settings

Chapter 4 Configuring Network Settings on the Cisco Unified IP Phone

Modifying DHCP Settings

Modifying DHCP Settings

Dynamic Host Configuration Protocol (DHCP) automatically assigns IP addresses to devices when you connect them to the network. This section provides information about enabling DHCP and releasing a DHCP-assigned IP address in the following topics:

•Enabling DHCP, page 4-13

•Disabling DHCP, page 4-15

•Releasing a DHCP Address, page 4-16

Enabling DHCP

Cisco Unified IP Phones enable DHCP by default, but you can reset the protocol if it becomes disabled.

To enable DHCP for the Cisco Unified IP Phone, follow these steps:

Using the Phone Configuration Web Page

Procedure

Step 1 Display the Phone Configuration web page.

For instructions, see the “Accessing Network Settings through a Phone

Configuration Web Page” section on page 4-2.

Step 2 In the pane on the left under Change Configuration, click Network Parameters.

You may be prompted to enter a password.

The Network Parameters web page appears.

Step 3 To enable DHCP, enter 1 in the DHCP field and click Apply.

Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 4.2, Cisco Unified IP Phone

	OL-8617-01	4-13

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Cisco Systems 4.2 Modifying DHCP Settings, Enabling DHCP, page Disabling DHCP, page, Releasing a DHCP Address, page

Contents

Configuration Methods, page Configuring Network Settings on theVerifying Network Settings, page Modifying DHCP Settings, page Configuring IP Settings, page Modifying VLAN Settings, pageAccessing Network Settings through a Phone Configuration Web Page Configuration MethodsConfiguration Methods Cisco Unified IP PhoneProcedure Displaying the Network Configuration Menu, page Displaying the Network Configuration MenuUnlocking and Locking Options on the Network Configuration Menu, page Verifying Network Settings, pageUnlocking and Locking Options on the Network Configuration Menu, page Unlocking and Locking Options on the Network Configuration MenuProcedure Step 2 Choose Settings Network ConfigurationSettings in the Network Configuration Menu” section on page Guidelines for Editing Settings in the Network Configuration MenuDisplaying the Network Configuration Menu, page Displaying the Network Configuration Menu, pageUsing the Phone Configuration Web Page Verifying Network SettingsUsing the Phone Network Configuration Screen For instructions, see the “Accessing Network Settings through a PhoneSettings” section on Network SettingSee the “Assigning a Default DescriptionSee the “Configuring CDP” See the “Configuring VLANSee the “Disabling VLAN” section on page4-10 See the “Modifying DHCPNetwork Setting Settings” section onSee the “Releasing a DHCP Configuration” section onSee the “Enabling an Alternate TFTP Server”4-12 Configuring TFTP Options, pageNetwork Setting Verifying Network Settings, page Modifying DHCP Settings, pageEnabling DHCP Modifying DHCP SettingsEnabling DHCP, page Disabling DHCP, page Releasing a DHCP Address, pageStep 3 Scroll to DHCP Enabled Configuration Menu” section on pageConfiguring IP Settings, page Disabling DHCP, page Releasing a DHCP Address, page4-15 Disabling DHCPUsing the Phone Configuration Web Page ProcedureEnabling DHCP, page Releasing a DHCP Address, page Releasing a DHCP Address4-16 Using the Phone Network Configuration ScreenStep 3 Scroll to DHCP Address Released Configuring IP Settings4-17 Using the Phone Network Configuration ScreenAssigning an IP Address Assigning an IP Address, page Assigning a Default Router, pageAssigning a Subnet Mask, page Assigning a Domain Name, page Assigning DNS Servers, page4-19 Assigning a Default RouterUsing the Phone Network Configuration Screen Procedure4-20 Step 3 Scroll to Default RouterUsing the Phone Configuration Web Page Using the Phone Network Configuration Screen4-21 Assigning a Subnet MaskUsing the Phone Configuration Web Page Procedure4-22 Assigning a Domain NameUsing the Phone Network Configuration Screen Procedure4-23 Step 3 Scroll to Alternate DomainUsing the Phone Configuration Web Page Using the Phone Network Configuration Screen4-24 Assigning DNS ServersUsing the Phone Configuration Web Page ProcedureStep 5 Scroll to DNS Server Step 3 Scroll to Alternate DNS4-25 Using the Phone Network Configuration ScreenConfiguring VLAN Settings Modifying VLAN SettingsConfiguring VLAN Settings, page Disabling VLAN, page Table A-5 on page A-16Disabling VLAN Step 3 Scroll to Admin. VLAN Id4-27 Using the Phone Network Configuration Screen4-28 Step 3 Scroll to VLAN EnabledUsing the Phone Network Configuration Screen ProcedureAssigning a TFTP Sever Configuring TFTP OptionsAssigning a TFTP Sever, page Enabling an Alternate TFTP Server, page 4-29Step 3 Scroll to TFTP Server Enabling an Alternate TFTP Server4-30 Using the Phone Network Configuration ScreenStep 5 Scroll to TFTP Server Step 3 Scroll to Alternate TFTP4-31 Using the Phone Network Configuration ScreenAssigning a Backup TFTP Server Configuring CDP4-32 Using the Phone Network Configuration ScreenUsing the Phone Configuration Web Page 4-33Using the Phone Network Configuration Screen ProcedureChapter 4 Configuring Network Settings on the Cisco Unified IP Phone 4-34Configuring CDP CDP Enabled Yes