Contents

Configuring Cisco Discovery Protocol

This chapter describes Cisco Discovery Protocol (CDP) and the configuration examples.

Understanding CDP

Cisco Discovery Protocol (CDP) is used to obtain protocol addresses of neighboring devices and discover the platform of those devices. CDP can also be used to show information about the interfaces your router uses. CDP is media- and protocol-independent, and runs on all Cisco-manufactured equipment including routers, bridges, access servers, and switches.

Use of SNMP with the CDP Management Information Base (MIB) allows network management applications to learn the device type and the SNMP agent address of neighboring devices, and to send SNMP queries to those devices. Cisco Discovery Protocol uses the CISCO-CDP-MIB.

CDP is enabled on the system and on the interfaces by default. If you prefer not to use the CDP device discovery capability, you can disable it with the no cdp run command at the system level and no cdp enable command at the interface level.

NTP-J66 Configure CDP

Purpose

This procedure configures CDP.
Tools/Equipment None
Prerequisite Procedures None
Required/As Needed As needed
Onsite/Remote Onsite or remote
Security Level Provisioning or higher
Procedure
Perform any of the following procedures as needed:

Stop. You have completed this procedure.


DLP-J225 Configure CDP Using Cisco IOS Commands

Purpose

This procedure configures CDP using Cisco IOS commands.
Tools/Equipment None
Prerequisite Procedures None
Required/As Needed As needed
Onsite/Remote Onsite or remote
Security Level Provisioning or higher

For information on show cdp commands, see the Cisco CPT Command Reference Guide.

Procedure
     Command or ActionPurpose
    Step 1enable


    Example:Router# enable 

    Enables privileged EXEC mode.

    • Enter your password if prompted.

     
    Step 2configure terminal


    Example:Router# configure terminal 

    Enters global configuration mode.

     
    Step 3[no] cdp run


    Example:Router(config)# cdp run 

    Re-enables or disables CDP on the system.

     
    Step 4interface type number


    Example:Router(config)# interface TenGigabitEthernet 4/1 

    Configures a Ten Gigabit Ethernet interface and enters interface configuration mode.

     
    Step 5[no] cdp enable


    Example:Router(config-if)# cdp enable 

    Re-enables or disables CDP on the interface.

     
    Step 6end


    Example:Router(config-if)# end 

    Returns to privileged EXEC mode.

     
    Step 7Return to your originating procedure (NTP). 

    —

     

    DLP-J224 Configure CDP Using CTC

    Purpose This procedure configures CDP using CTC.
    Tools/Equipment None
    Prerequisite Procedures None
    Required/As Needed As needed
    Onsite/Remote Onsite or remote
    Security Level Provisioning or higher
    Procedure
      Step 1   Complete the NTP-J22 Log into CTC procedure at a node where you want to configure CDP.
      Step 2   Right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears.
      Step 3   Click the Provisioning tab.
      Step 4   From the left pane, click the Port Configuration tab.
      Step 5   Check the Enable System-Level CDP check box to enable CDP on the CPT system.
      Step 6   In the Port Configurations area, expand each slot and check the CDP Enable check box for each port that you want to enable CDP.
      Step 7   Click Apply to save the configuration.
      Step 8   Return to your originating procedure (NTP).
      Configuring Cisco Discovery Protocol

      Configuring Cisco Discovery Protocol

      This chapter describes Cisco Discovery Protocol (CDP) and the configuration examples.

      Understanding CDP

      Cisco Discovery Protocol (CDP) is used to obtain protocol addresses of neighboring devices and discover the platform of those devices. CDP can also be used to show information about the interfaces your router uses. CDP is media- and protocol-independent, and runs on all Cisco-manufactured equipment including routers, bridges, access servers, and switches.

      Use of SNMP with the CDP Management Information Base (MIB) allows network management applications to learn the device type and the SNMP agent address of neighboring devices, and to send SNMP queries to those devices. Cisco Discovery Protocol uses the CISCO-CDP-MIB.

      CDP is enabled on the system and on the interfaces by default. If you prefer not to use the CDP device discovery capability, you can disable it with the no cdp run command at the system level and no cdp enable command at the interface level.

      NTP-J66 Configure CDP

      Purpose

      This procedure configures CDP.
      Tools/Equipment None
      Prerequisite Procedures None
      Required/As Needed As needed
      Onsite/Remote Onsite or remote
      Security Level Provisioning or higher
      Procedure
      Perform any of the following procedures as needed:

      Stop. You have completed this procedure.


      DLP-J225 Configure CDP Using Cisco IOS Commands

      Purpose

      This procedure configures CDP using Cisco IOS commands.
      Tools/Equipment None
      Prerequisite Procedures None
      Required/As Needed As needed
      Onsite/Remote Onsite or remote
      Security Level Provisioning or higher

      For information on show cdp commands, see the Cisco CPT Command Reference Guide.

      Procedure
         Command or ActionPurpose
        Step 1enable


        Example:Router# enable 

        Enables privileged EXEC mode.

        • Enter your password if prompted.

         
        Step 2configure terminal


        Example:Router# configure terminal 

        Enters global configuration mode.

         
        Step 3[no] cdp run


        Example:Router(config)# cdp run 

        Re-enables or disables CDP on the system.

         
        Step 4interface type number


        Example:Router(config)# interface TenGigabitEthernet 4/1 

        Configures a Ten Gigabit Ethernet interface and enters interface configuration mode.

         
        Step 5[no] cdp enable


        Example:Router(config-if)# cdp enable 

        Re-enables or disables CDP on the interface.

         
        Step 6end


        Example:Router(config-if)# end 

        Returns to privileged EXEC mode.

         
        Step 7Return to your originating procedure (NTP). 

        —

         

        DLP-J224 Configure CDP Using CTC

        Purpose This procedure configures CDP using CTC.
        Tools/Equipment None
        Prerequisite Procedures None
        Required/As Needed As needed
        Onsite/Remote Onsite or remote
        Security Level Provisioning or higher
        Procedure
          Step 1   Complete the NTP-J22 Log into CTC procedure at a node where you want to configure CDP.
          Step 2   Right-click the fabric or line card and choose Open Packet Transport System View. The Packet Transport System View dialog box appears.
          Step 3   Click the Provisioning tab.
          Step 4   From the left pane, click the Port Configuration tab.
          Step 5   Check the Enable System-Level CDP check box to enable CDP on the CPT system.
          Step 6   In the Port Configurations area, expand each slot and check the CDP Enable check box for each port that you want to enable CDP.
          Step 7   Click Apply to save the configuration.
          Step 8   Return to your originating procedure (NTP).