Software Configuration Guide, Cisco IOS Release 15.2(2)E (Catalyst 2960, 2960-S, 2960-SF and 2960-Plus Switches)
Configuring Cisco IOS Configuration Engine
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Configuring Cisco IOS Configuration Engine

Contents

Configuring Cisco IOS Configuration Engine

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to http:/​/​www.cisco.com/​go/​cfn. An account on Cisco.com is not required.

Prerequisites for Configuring the Configuration Engine

  • Obtain the name of the configuration engine instance to which you are connecting.

  • Because the CNS uses both the event bus and the configuration server to provide configurations to devices, you must define both ConfigID and Device ID for each configured switch.

  • All switches configured with the cns config partial global configuration command must access the event bus. The DeviceID, as originated on the switch, must match the DeviceID of the corresponding switch definition in the Cisco Configuration Engine. You must know the hostname of the event bus to which you are connecting.

Restrictions for Configuring the Configuration Engine

  • Within the scope of a single instance of the configuration server, no two configured switches can share the same value for ConfigID.

  • Within the scope of a single instance of the event bus, no two configured switches can share the same value for DeviceID.

Information About Configuring the Configuration Engine

Cisco Configuration Engine Software

The Cisco Configuration Engine is network management utility software that acts as a configuration service for automating the deployment and management of network devices and services. Each Cisco Configuration Engine manages a group of Cisco devices (switches and routers) and the services that they deliver, storing their configurations and delivering them as needed. The Cisco Configuration Engine automates initial configurations and configuration updates by generating device-specific configuration changes, sending them to the device, executing the configuration change, and logging the results.

The Cisco Configuration Engine supports standalone and server modes and has these Cisco Networking Services (CNS) components:

  • Configuration service:

    • Web server

    • File manager

    • Namespace mapping server

  • Event service (event gateway)

  • Data service directory (data models and schema)

In standalone mode, the Cisco Configuration Engine supports an embedded directory service. In this mode, no external directory or other data store is required. In server mode, the Cisco Configuration Engine supports the use of a user-defined external directory.

Figure 1. Cisco Configuration Engine Architectural Overview

Configuration Service

The Configuration Service is the core component of the Cisco Configuration Engine. It consists of a Configuration Server that works with Cisco IOS CNS agents on the switch. The Configuration Service delivers device and service configurations to the switch for initial configuration and mass reconfiguration by logical groups. Switches receive their initial configuration from the Configuration Service when they start up on the network for the first time.

The Configuration Service uses the CNS Event Service to send and receive configuration change events and to send success and failure notifications.

The Configuration Server is a web server that uses configuration templates and the device-specific configuration information stored in the embedded (standalone mode) or remote (server mode) directory.

Configuration templates are text files containing static configuration information in the form of CLI commands. In the templates, variables are specified by using Lightweight Directory Access Protocol (LDAP) URLs that reference the device-specific configuration information stored in a directory.

The Cisco IOS agent can perform a syntax check on received configuration files and publish events to show the success or failure of the syntax check. The configuration agent can either apply configurations immediately or delay the application until receipt of a synchronization event from the configuration server.

Event Service

The Cisco Configuration Engine uses the Event Service for receipt and generation of configuration events. The Event Service consists of an event agent and an event gateway. The event agent is on the switch and facilitates the communication between the switch and the event gateway on the Cisco Configuration Engine.

The Event Service is a highly capable publish-and-subscribe communication method. The Event Service uses subject-based addressing to send messages to their destinations. Subject-based addressing conventions define a simple, uniform namespace for messages and their destinations.

NameSpace Mapper

The Cisco Configuration Engine includes the NameSpace Mapper (NSM) that provides a lookup service for managing logical groups of devices based on application, device or group ID, and event.

Cisco IOS devices recognize only event subject-names that match those configured in Cisco IOS software; for example, cisco.cns.config.load. You can use the namespace mapping service to designate events by using any desired naming convention. When you have populated your data store with your subject names, NSM changes your event subject-name strings to those known by Cisco IOS.

For a subscriber, when given a unique device ID and event, the namespace mapping service returns a set of events to which to subscribe. Similarly, for a publisher, when given a unique group ID, device ID, and event, the mapping service returns a set of events on which to publish.

Cisco Networking Services IDs and Device Hostnames

The Cisco Configuration Engine assumes that a unique identifier is associated with each configured switch. This unique identifier can take on multiple synonyms, where each synonym is unique within a particular namespace. The event service uses namespace content for subject-based addressing of messages.

The Cisco Configuration Engine intersects two namespaces, one for the event bus and the other for the configuration server. Within the scope of the configuration server namespace, the term ConfigID is the unique identifier for a device. Within the scope of the event bus namespace, the term DeviceID is the CNS unique identifier for a device.

Because the Configuration Engine uses both the event bus and the configuration server to provide configurations to devices, you must define both ConfigID and Device ID for each configured switch .

Within the scope of a single instance of the configuration server, no two configured switches can share the same value for ConfigID. Within the scope of a single instance of the event bus, no two configured switches can share the same value for DeviceID.

ConfigID

Each configured switch has a unique ConfigID, which serves as the key into the Cisco Configuration Engine directory for the corresponding set of switch CLI attributes. The ConfigID defined on the switch must match the ConfigID for the corresponding switch definition on the Cisco Configuration Engine.

The ConfigID is fixed at startup time and cannot be changed until the device restarts, even if the switch hostname is reconfigured.

DeviceID

Each configured switch participating on the event bus has a unique DeviceID, which is analogous to the switch source address so that the switch can be targeted as a specific destination on the bus.

All switches configured with the cns config partial global configuration command must access the event bus. Therefore, the DeviceID, as originated on the switch, must match the DeviceID of the corresponding switch definition in the Configuration Engine.

The origin of the DeviceID is defined by the Cisco IOS hostname of the switch. However, the DeviceID variable and its usage reside within the event gateway adjacent to the switch.

The logical Cisco IOS termination point on the event bus is embedded in the event gateway, which in turn functions as a proxy on behalf of the switch. The event gateway represents the switch and its corresponding DeviceID to the event bus.

The switch declares its hostname to the event gateway immediately after the successful connection to the event gateway. The event gateway couples the DeviceID value to the Cisco IOS hostname each time this connection is established. The event gateway retains this DeviceID value for the duration of its connection to the switch.

Hostname and DeviceID

The DeviceID is fixed at the time of the connection to the event gateway and does not change even when the switch hostname is reconfigured.

When changing the switch hostname on the switch, the only way to refresh the DeviceID is to break the connection between the switch and the event gateway. For instructions on refreshing DeviceIDs, see "Related Topics."

When the connection is reestablished, the switch sends its modified hostname to the event gateway. The event gateway redefines the DeviceID to the new value.


Caution


When using the Cisco Configuration Engine user interface, you must first set the DeviceID field to the hostname value that the switch acquires after, not before, and you must reinitialize the configuration for your Cisco IOS CNS agent. Otherwise, subsequent partial configuration command operations may malfunction.


Hostname, DeviceID, and ConfigID

In standalone mode, when a hostname value is set for a switch, the configuration server uses the hostname as the DeviceID when an event is sent on hostname. If the hostname has not been set, the event is sent on the cn=<value> of the device.

In server mode, the hostname is not used. In this mode, the unique DeviceID attribute is always used for sending an event on the bus. If this attribute is not set, you cannot update the switch.

These and other associated attributes (tag value pairs) are set when you run Setup on the Cisco Configuration Engine.

Cisco IOS CNS Agents

The CNS event agent feature allows the switch to publish and subscribe to events on the event bus and works with the Cisco IOS CNS agent. These agents, embedded in the switch Cisco IOS software, allow the switch to be connected and automatically configured.

Initial Configuration

When the switch first comes up, it attempts to get an IP address by broadcasting a Dynamic Host Configuration Protocol (DHCP) request on the network. Assuming there is no DHCP server on the subnet, the distribution switch acts as a DHCP relay agent and forwards the request to the DHCP server. Upon receiving the request, the DHCP server assigns an IP address to the new switch and includes the Trivial File Transfer Protocol (TFTP) server Internet Protocol (IP) address, the path to the bootstrap configuration file, and the default gateway IP address in a unicast reply to the DHCP relay agent. The DHCP relay agent forwards the reply to the switch.

The switch automatically configures the assigned IP address on interface VLAN 1 (the default) and downloads the bootstrap configuration file from the TFTP server. Upon successful download of the bootstrap configuration file, the switch loads the file in its running configuration.

The Cisco IOS CNS agents initiate communication with the Configuration Engine by using the appropriate ConfigID and EventID. The Configuration Engine maps the Config ID to a template and downloads the full configuration file to the switch.

The following figure shows a sample network configuration for retrieving the initial bootstrap configuration file by using DHCP-based autoconfiguration.

Figure 2. Initial Configuration

Related References

Incremental (Partial) Configuration

After the network is running, new services can be added by using the Cisco IOS CNS agent. Incremental (partial) configurations can be sent to the switch. The actual configuration can be sent as an event payload by way of the event gateway (push operation) or as a signal event that triggers the switch to initiate a pull operation.

The switch can check the syntax of the configuration before applying it. If the syntax is correct, the switch applies the incremental configuration and publishes an event that signals success to the configuration server. If the switch does not apply the incremental configuration, it publishes an event showing an error status. When the switch has applied the incremental configuration, it can write it to nonvolatile random-access memory (NVRAM) or wait until signaled to do so.

Related References

Synchronized Configuration

When the switch receives a configuration, it can defer application of the configuration upon receipt of a write-signal event. The write-signal event tells the switch not to save the updated configuration into its NVRAM. The switch uses the updated configuration as its running configuration. This ensures that the switch configuration is synchronized with other network activities before saving the configuration in NVRAM for use at the next reboot.

Automated CNS Configuration

To enable automated CNS configuration of the switch, you must first complete the prerequisites listed in this topic. When you complete them, power on the switch. At the setup prompt, do nothing; the switch begins the initial configuration. When the full configuration file is loaded on your switch, you do not need to do anything else.

For more information on what happens during initial configuration, see "Related Topics."

Table 1 Prerequisites for Enabling Automatic Configuration

Device

Required Configuration

Access switch

Factory default (no configuration file)

Distribution switch

  • IP helper address

  • Enable DHCP relay agent1

  • IP routing (if used as default gateway)

DHCP server

  • IP address assignment

  • TFTP server IP address

  • Path to bootstrap configuration file on the TFTP server

  • Default gateway IP address

TFTP server

  • A bootstrap configuration file that includes the CNS configuration commands that enable the switch to communicate with the Configuration Engine

  • The switch configured to use either the switch MAC address or the serial number (instead of the default hostname) to generate the ConfigID and EventID

  • The CNS event agent configured to push the configuration file to the switch

CNS Configuration Engine

One or more templates for each type of device, with the ConfigID of the device mapped to the template.

1 A DHCP Relay is needed only when the DHCP Server is on a different subnet from the client.
Related References

How to Configure the Configuration Engine

Enabling Automated Cisco Networking Services (CNS) Configuration

To enable automated CNS configuration of the switch:

Before You Begin

Make sure that switch is powered off.

SUMMARY STEPS

    1.    Make sure that the access switch is set to the factory default.

    2.    On the distribution switch:

    3.    On the DHCP server, configure the following:

    4.    On the TFTP server, configure the following:

    5.    On the CNS Configuration Engine, configure one or more templates for each type of device, with the ConfigID of the device mapped to the template.

    6.    Power on the switch.

    7.    At the setup prompt, do nothing.


DETAILED STEPS
     Command or ActionPurpose
    Step 1 Make sure that the access switch is set to the factory default. 

    There is no configuration file.

     
    Step 2On the distribution switch: 
    • Configure the IP helper address
    • Enable DHCP relay agent

    • Configure IP routing (if used as default gateway)

     
    Step 3On the DHCP server, configure the following: 
    • IP address assignment
    • TFTP server IP address

    • Path to bootstrap configuration file on the TFTP server

    • Default gateway IP address

     
    Step 4On the TFTP server, configure the following: 
    • A bootstrap configuration file that includes the CNS configuration commands that enable the switch to communicate with the Configuration Engine
    • The switch configured to use either the switch MAC address or the serial number (instead of the default hostname) to generate the ConfigID and EventID

    • The CNS event agent configured to push the configuration file to the switch

     
    Step 5On the CNS Configuration Engine, configure one or more templates for each type of device, with the ConfigID of the device mapped to the template.   
    Step 6Power on the switch.   
    Step 7At the setup prompt, do nothing. 

    The switch begins the initial configuration.

    Once the full configuration file is loaded on the switch, it is enabled for automated CNS configuration.

     
    What to Do Next


    Note


    For more information about running the setup program and creating templates on the Configuration Engine, see the Cisco Configuration Engine Installation and Setup Guide, 1.5 for Linux

    http:/​/​www.cisco.com/​en/​US/​docs/​net_mgmt/​configuration_engine/​1.5/​installation_linux/​guide/​setup_​1.html


    Related Concepts
    Related References

    Enabling the CNS Event Agent


    Note


    You must enable the CNS event agent on the switch before you enable the CNS configuration agent.


    Follow these steps to enable the CNS event agent on the switch.

    SUMMARY STEPS

      1.    enable

      2.    configure terminal

      3.    cns event {hostname | ip-address} [port-number] [ [keepalive seconds retry-count] [failover-time seconds ] [reconnect-time time] | backup] [source ip-address]

      4.    end

      5.    show running-config

      6.    copy running-config startup-config


    DETAILED STEPS
       Command or ActionPurpose
      Step 1 enable


      Example:
      Switch> enable
      
      
       

      Enables privileged EXEC mode. Enter your password if prompted.

       

      Step 2configure terminal


      Example:
      
      Switch# configure terminal
      
      
       

      Enters the global configuration mode.

       
      Step 3cns event {hostname | ip-address} [port-number] [ [keepalive seconds retry-count] [failover-time seconds ] [reconnect-time time] | backup] [source ip-address]


      Example:
      Switch(config)# cns event 10.180.1.27 keepalive 120 10
      
       

      Enables the event agent, and enters the gateway parameters.

      • For {hostname | ip-address}, enter either the hostname or the IP address of the event gateway.

      • (Optional) For port number, enter the port number for the event gateway. The default port number is 11011.

      • (Optional) For keepalive seconds, enter how often the switch sends keepalive messages. For retry-count, enter the number of unanswered keepalive messages that the switch sends before the connection is terminated. The default for each is 0.

      • (Optional) For failover-time seconds, enter how long the switch waits for the primary gateway route after the route to the backup gateway is established.

      • (Optional) For reconnect-time time, enter the maximum time interval that the switch waits before trying to reconnect to the event gateway.

      • (Optional) Enter backup to show that this is the backup gateway. (If omitted, this is the primary gateway.)

      • (Optional) For source ip-address, enter the source IP address of this device.

      Note   

      Though visible in the command-line help string, the encrypt and the clock-timeout time keywords are not supported.

       
      Step 4end


      Example:
      
      Switch(config)# end
      
      
       

      Returns to privileged EXEC mode.

       
      Step 5show running-config


      Example:
      
      Switch# show running-config 
      
      
       

      Verifies your entries.

       
      Step 6copy running-config startup-config


      Example:
      Switch# copy running-config startup-config 
      
      
       

      (Optional) Saves your entries in the configuration file.

       
      What to Do Next

      To verify information about the event agent, use the show cns event connections command in privileged EXEC mode.

      To disable the CNS event agent, use the no cns event { ip-address | hostname } global configuration command.

      Related Concepts

      Enabling the Cisco IOS CNS Agent

      Follow these steps to enable the Cisco IOS CNS agent on the switch.

      Before You Begin

      You must enable the CNS event agent on the switch before you enable this agent.

      SUMMARY STEPS

        1.    enable

        2.    configure terminal

        3.    cns config initial {hostname | ip-address} [port-number]

        4.    cns config partial {hostname | ip-address} [port-number]

        5.    end

        6.    show running-config

        7.    copy running-config startup-config

        8.    Start the Cisco IOS CNS agent on the switch.


      DETAILED STEPS
         Command or ActionPurpose
        Step 1 enable


        Example:
        Switch> enable
        
        
         

        Enables privileged EXEC mode. Enter your password if prompted.

         

        Step 2configure terminal


        Example:
        
        Switch# configure terminal
        
        
         

        Enters the global configuration mode.

         
        Step 3cns config initial {hostname | ip-address} [port-number]


        Example:
        Switch(config)# cns config initial 10.180.1.27 10
        
        
         

        Enables the Cisco IOS CNS agent, and enters the configuration server parameters.

        • For {hostname | ip-address}, enter either the hostname or the IP address of the configuration server.

        • (Optional) For port number, enter the port number for the configuration server.

        This command enables the Cisco IOS CNS agent and initiates an initial configuration on the switch.

         
        Step 4cns config partial {hostname | ip-address} [port-number]


        Example:
        Switch(config)# cns config partial 10.180.1.27 10
        
        
         

        Enables the Cisco IOS CNS agent, and enters the configuration server parameters.

        • For {hostname | ip-address}, enter either the hostname or the IP address of the configuration server.

        • (Optional) For port number, enter the port number for the configuration server.

        Enables the Cisco IOS CNS agent and initiates a partial configuration on the switch.

         
        Step 5end


        Example:
        
        Switch(config)# end
        
        
         

        Returns to privileged EXEC mode.

         
        Step 6show running-config


        Example:
        
        Switch# show running-config 
        
        
         

        Verifies your entries.

         
        Step 7copy running-config startup-config


        Example:
        Switch# copy running-config startup-config 
        
        
         

        (Optional) Saves your entries in the configuration file.

         
        Step 8Start the Cisco IOS CNS agent on the switch.  

         

        What to Do Next

        You can now use the Cisco Configuration Engine to remotely send incremental configurations to the switch.

        Related Concepts

        Enabling an Initial Configuration for Cisco IOS CNS Agent

        Follow these steps to enable the CNS configuration agent and initiate an initial configuration on the switch.

        SUMMARY STEPS

          1.    enable

          2.    configure terminal

          3.    cns template connect name

          4.    cli config-text

          5.    Repeat Steps 3 to 4 to configure another CNS connect template.

          6.    exit

          7.    cns connect name [retries number] [retry-interval seconds] [sleep seconds] [timeout seconds]

          8.    discover {controller controller-type | dlci [subinterface subinterface-number] | interface [interface-type] | line line-type}

          9.    template name [... name]

          10.    Repeat Steps 8 to 9 to specify more interface parameters and CNS connect templates in the CNS connect profile.

          11.    exit

          12.    hostname name

          13.    ip route network-number

          14.    cns id interface num {dns-reverse | ipaddress | mac-address} [event] [image]

          15.    cns id {hardware-serial | hostname | string string | udi} [event] [image]

          16.    cns config initial {hostname | ip-address} [port-number] [event] [no-persist] [page page] [source ip-address] [syntax-check]

          17.    end

          18.    show running-config

          19.    copy running-config startup-config


        DETAILED STEPS
           Command or ActionPurpose
          Step 1 enable


          Example:
          Switch> enable
          
          
           

          Enables privileged EXEC mode. Enter your password if prompted.

           

          Step 2configure terminal


          Example:
          
          Switch# configure terminal
          
          
           

          Enters the global configuration mode.

           
          Step 3cns template connect name


          Example:
          Switch(config)# cns template connect template-dhcp
          
           

          Enters CNS template connect configuration mode, and specifies the name of the CNS connect template.

           
          Step 4cli config-text


          Example:
          Switch(config-tmpl-conn)# cli ip address dhcp
          
           

          Enters a command line for the CNS connect template. Repeat this step for each command line in the template.

           
          Step 5Repeat Steps 3 to 4 to configure another CNS connect template.    
          Step 6exit


          Example:
          Switch(config)# exit
          
           

          Returns to global configuration mode.

           
          Step 7cns connect name [retries number] [retry-interval seconds] [sleep seconds] [timeout seconds]


          Example:
          Switch(config)# cns connect dhcp
          
           

          Enters CNS connect configuration mode, specifies the name of the CNS connect profile, and defines the profile parameters. The switch uses the CNS connect profile to connect to the Configuration Engine.

          • Enter the name of the CNS connect profile.

          • (Optional) For retries number, enter the number of connection retries. The range is 1 to 30. The default is 3.

          • (Optional) For retry-interval seconds, enter the interval between successive connection attempts to the Configuration Engine. The range is 1 to 40 seconds. The default is 10 seconds.

          • (Optional) For sleep seconds, enter the amount of time before which the first connection attempt occurs. The range is 0 to 250 seconds. The default is 0.

          • (Optional) For timeout seconds, enter the amount of time after which the connection attempts end. The range is 10 to 2000 seconds. The default is 120.

           
          Step 8discover {controller controller-type | dlci [subinterface subinterface-number] | interface [interface-type] | line line-type}


          Example:
          Switch(config-cns-conn)# discover interface gigabitethernet
          
           

          Specifies the interface parameters in the CNS connect profile.

          • For controller controller-type, enter the controller type.

          • For dlci, enter the active data-link connection identifiers (DLCIs).

            (Optional) For subinterface subinterface-number, specify the point-to-point subinterface number that is used to search for active DLCIs.

          • For interface [interface-type], enter the type of interface.

          • For line line-type, enter the line type.

           
          Step 9template name [... name]


          Example:
          Switch(config-cns-conn)# template template-dhcp
          
           

          Specifies the list of CNS connect templates in the CNS connect profile to be applied to the switch configuration. You can specify more than one template.

           
          Step 10Repeat Steps 8 to 9 to specify more interface parameters and CNS connect templates in the CNS connect profile.    
          Step 11exit


          Example:
          Switch(config-cns-conn)# exit
          
           

          Returns to global configuration mode.

           
          Step 12hostname name


          Example:
          Switch(config)# hostname device1
          
           

          Enters the hostname for the switch.

           
          Step 13ip route network-number


          Example:
          RemoteSwitch(config)# ip route 172.28.129.22 255.255.255.255 11.11.11.1
          
           

          (Optional) Establishes a static route to the Configuration Engine whose IP address is network-number.

           
          Step 14cns id interface num {dns-reverse | ipaddress | mac-address} [event] [image]


          Example:
          RemoteSwitch(config)# cns id GigabitEthernet1/0/1 ipaddress
          
           

          (Optional) Sets the unique EventID or ConfigID used by the Configuration Engine. If you enter this command, do not enter the cns id {hardware-serial | hostname | string string | udi} [event] [image] command.

          • For interface num, enter the type of interface. For example, ethernet, group-async, loopback, or virtual-template. This setting specifies from which interface the IP or MAC address should be retrieved to define the unique ID.

          • For {dns-reverse | ipaddress | mac-address}, enter dns-reverse to retrieve the hostname and assign it as the unique ID, enter ipaddress to use the IP address, or enter mac-address to use the MAC address as the unique ID.

          • (Optional) Enter event to set the ID to be the event-id value used to identify the switch.

          • (Optional) Enter image to set the ID to be the image-id value used to identify the switch.

          Note   

          If both the event and image keywords are omitted, the image-id value is used to identify the switch.

           
          Step 15cns id {hardware-serial | hostname | string string | udi} [event] [image]


          Example:
          RemoteSwitch(config)# cns id hostname
          
           
          (Optional) Sets the unique EventID or ConfigID used by the Configuration Engine. If you enter this command, do not enter the cns id interface num {dns-reverse | ipaddress | mac-address} [event] [image] command.
          • For { hardware-serial | hostname | string   string | udi }, enter hardware-serial to set the switch serial number as the unique ID, enter hostname (the default) to select the switch hostname as the unique ID, enter an arbitrary text string for string string as the unique ID, or enter udi to set the unique device identifier (UDI) as the unique ID.

           
          Step 16cns config initial {hostname | ip-address} [port-number] [event] [no-persist] [page page] [source ip-address] [syntax-check]


          Example:
          RemoteSwitch(config)# cns config initial 10.1.1.1 no-persist
          
           

          Enables the Cisco IOS agent, and initiates an initial configuration.

          • For {hostname | ip-address}, enter the hostname or the IP address of the configuration server.

          • (Optional) For port-number, enter the port number of the configuration server. The default port number is 80.

          • (Optional) Enable event for configuration success, failure, or warning messages when the configuration is finished.

          • (Optional) Enable no-persist to suppress the automatic writing to NVRAM of the configuration pulled as a result of entering the cns config initial global configuration command. If the no-persist keyword is not entered, using the cns config initial command causes the resultant configuration to be automatically written to NVRAM.

          • (Optional) For page page, enter the web page of the initial configuration. The default is /Config/config/asp.

          • (Optional) Enter source ip-address to use for source IP address.

          • (Optional) Enable syntax-check to check the syntax when this parameter is entered.

          Note   

          Though visible in the command-line help string, the encrypt, status url, and inventory keywords are not supported.

           
          Step 17end


          Example:
          
          Switch(config)# end
          
          
           

          Returns to privileged EXEC mode.

           
          Step 18show running-config


          Example:
          
          Switch# show running-config 
          
          
           

          Verifies your entries.

           
          Step 19copy running-config startup-config


          Example:
          Switch# copy running-config startup-config 
          
          
           

          (Optional) Saves your entries in the configuration file.

           
          What to Do Next

          To verify information about the configuration agent, use the show cns config connections command in privileged EXEC mode.

          To disable the CNS Cisco IOS agent, use the no cns config initial { ip-address | hostname } global configuration command.

          Related Concepts
          Related References

          Enabling a Partial Configuration for Cisco IOS CNS Agent

          Follow these steps to enable the Cisco IOS CNS agent and to initiate a partial configuration on the switch.

          SUMMARY STEPS

            1.    enable

            2.    configure terminal

            3.    cns config partial {ip-address | hostname} [port-number] [source ip-address]

            4.    end

            5.    show running-config

            6.    copy running-config startup-config


          DETAILED STEPS
             Command or ActionPurpose
            Step 1 enable


            Example:
            Switch> enable
            
            
             

            Enables privileged EXEC mode. Enter your password if prompted.

             

            Step 2configure terminal


            Example:
            
            Switch# configure terminal
            
            
             

            Enters the global configuration mode.

             
            Step 3cns config partial {ip-address | hostname} [port-number] [source ip-address]


            Example:
            Switch(config)# cns config partial 172.28.129.22 2013
            
             

            Enables the configuration agent, and initiates a partial configuration.

            • For {ip-address | hostname}, enter the IP address or the hostname of the configuration server.

            • (Optional) For port-number, enter the port number of the configuration server. The default port number is 80.

            • (Optional) Enter source ip-address to use for the source IP address.

            Note   

            Though visible in the command-line help string, the encrypt keyword is not supported.

             
            Step 4end


            Example:
            
            Switch(config)# end
            
            
             

            Returns to privileged EXEC mode.

             
            Step 5show running-config


            Example:
            
            Switch# show running-config 
            
            
             

            Verifies your entries.

             
            Step 6copy running-config startup-config


            Example:
            Switch# copy running-config startup-config 
            
            
             

            (Optional) Saves your entries in the configuration file.

             
            What to Do Next

            To verify information about the configuration agent, use either the show cns config stats or the show cns config outstanding command in privileged EXEC mode.

            To disable the Cisco IOS agent, use the no cns config partial { ip-address | hostname } global configuration command. To cancel a partial configuration, use the cns config cancel global configuration command.

            Related References

            Monitoring CNS Configurations

            Table 2 CNS show Commands

            Command

            Purpose

            show cns config connections

            Switch# show cns config connections
            

            Displays the status of the CNS Cisco IOS CNS agent connections.

            show cns config outstanding

            Switch# show cns config outstanding
            

            Displays information about incremental (partial) CNS configurations that have started but are not yet completed.

            show cns config stats

            Switch# show cns config stats
            

            Displays statistics about the Cisco IOS CNS agent.

            show cns event connections

            Switch# show cns event connections
            

            Displays the status of the CNS event agent connections.

            show cns event gateway

            Switch# show cns event gateway
            

            Displays the event gateway information for your switch.

            show cns event stats

            Switch# show cns event stats
            

            Displays statistics about the CNS event agent.

            show cns event subject

            Switch# show cns event subject
            

            Displays a list of event agent subjects that are subscribed to by applications.

            Additional References

            Related Documents

            Related Topic Document Title
            Configuration Engine Setup

            Cisco Configuration Engine Installation and Setup Guide, 1.5 for Linux http:/​/​www.cisco.com/​en/​US/​docs/​net_mgmt/​configuration_engine/​1.5/​installation_linux/​guide/​setup_​1.html

            Error Message Decoder

            Description Link

            To help you research and resolve system error messages in this release, use the Error Message Decoder tool.

            https:/​/​www.cisco.com/​cgi-bin/​Support/​Errordecoder/​index.cgi

            Standards and RFCs

            Standard/RFC Title

            None

            -

            MIBs

            MIB MIBs Link

            All supported MIBs for this release.

            To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:

            http:/​/​www.cisco.com/​go/​mibs

            Technical Assistance

            Description Link

            The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies.

            To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds.

            Access to most tools on the Cisco Support website requires a Cisco.com user ID and password.

            http:/​/​www.cisco.com/​support

            Feature History and Information for the Configuration Engine

            Release

            Modification

            This feature was introduced.