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Use the Cisco Digital Subscriber Line Manager's Auto Discovery feature to:
The Auto Discovery application includes three different mechanisms for discovering devices:
1. IP---ICMP pings find devices in a specific IP address range. ICMP pings locate IP devices that exist, but do not identify the type of devices.
2. SNMP---SNMP get requests find devices in a specific IP address range. you can use several SNMP community strings so that equipment with different community strings can be discovered in the same discovery session. Use the SNMP information returned by devices to identify the type of devices that were found.
3. IP and SNMP---ICMP pings find devices, and then SNMP requests are used to interrogate the devices to find out the type of devices they are. This is the default mechanism.
Auto Discovery can discover devices on more than one subnetwork by using multi-hop discovery.
After the device is detected, an object representing a chassis and the NI-2 module is created and placed under the site from which auto discovery was launched. A map of the chassis and NI-2 is also created.
Use Auto Discovery to discover an existing network or to identify new CDM devices and their detailed hardware configuration after physical installation.
To open Auto Discovery from the MapViewer or Object Manager:
Step 2 Press and hold down the right mouse button. A pop-up menu appears.
Step 3 Select the AV Tools, Open Auto Discovery option.
Step 4 Release the mouse button. The Discover Network Devices window appears (Figure 2-1).
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Note If you launch Auto Discovery from a site object, the launch automatically populates the physical containment field; but, the Use Physical Path check box is not checked. If you launch Auto Discovery from any other object, you must choose the physical containment you require. |
The Discover Network Devices window contains the following window areas:
The following sections describe these window areas.
Enter the configuration details to be used in Auto Discovery in the following Discovery Configuration fields:
Enter the IP configuration details to be used in Auto Discovery in the following IP configuration field:
Enter the SNMP configuration details to be used in Auto Discovery in the following SNMP configuration fields:
To remove any of the displayed community names, select the community name and then select the Remove button.
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Note You must enter at least one community name in the New Community data entry box. |
The system uses the path you specify in the Physical Location area to display objects that are discovered.
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Note When you perform an Auto Discovery, you must specify the Physical Location path. If you do not specify the path, CDM does not create the discovered objects. |
You can view the Discovery Interface details from the Device Interfaces section of the window.
To view the discovery interface details:
Step 2 Modify the Start Address and End Address details of the Discovery Interface window as necessary.
Step 3 Select OK to proceed or Cancel to terminate the changes.
To discover IP devices:
Step 2 Open the Discover Network Devices window (see Figure 2-1).
Step 3 The object name and address appears in the Discovery Configuration section of the window.
Step 4 Select the drop-down list next to Discovery Method and select IP from the displayed list. IP appears next to Discovery Method.
Step 5 In the Ping Retries data entry box, type the number of times you want the system to attempt to identify if there is an active machine connected at a specified address.
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Note If IP Retries is zero, only the initial attempt to ping a device is made. If the device does not respond or responds with an error, the device is ignored. Leave the Hop Count at zero. |
Step 6 Select the Use Physical Path check box. Ensure the correct path is shown. Select Get Path and select the correct Physical Containment, if required. Objects available for selection have an associated green color box. A red color box next to a node indicates that the object is not available.
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Note If the object used to launch Auto Discovery already has a physical location, this is shown by default. Select the path. |
Step 7 To start the discovery process, select the Do Discovery button. When Auto Discovery begins, the system checks for existing devices in a selected address range. The discovery process ignores any existing devices. The Discovery Progress window appears. The Action Log section of the Discovery Progress window displays the Auto Discovery progress in a tabular format.
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Note To stop the discovery and creation of objects, select the Stop button. Objects created before you press the Stop button are stored under mgmtContainment and networkContainment trees. |
When the relevant IP devices on the network are discovered, an object class is created and stored under the mgmtContainment and networkContainment trees for each device.
Step 8 To close the Discovery Progress window, select the Close button.
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Note The relevant IP devices can now be accessed through the Object Manager and the maps. |
To discover SNMP devices, or SNMP and IP devices:
Step 2 Open the Discover Network Devices window (see Figure 2-1). The object name and address appear in the Discovery Configuration section of the window.
Step 3 Select the drop-down list next to Discovery Method and select SNMP or IP and SNMP from the displayed list. SNMP or IP and SNMP appear next to Discovery Method.
Step 4 Set the Hop Count to the number of networks or gateways you want to traverse from the local network. The maximum number is 16.
Step 5 In the Ping Retries data entry box, enter a number. Ping Retries is the number of times the system should try to identify if there is an active machine connected at a specified IP address or IP devices.
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Note The maximum number of ping retries is 10. |
Step 6 In the New Community data entry box, enter a community name.
Step 7 Select the Add button. The new community name appears with all of the other community names entered.
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Note To remove any of the displayed community names, select the community name and then the Remove button. There must be at least one community name remaining. |
Step 8 In the SNMP Retries data entry box, enter a number. SNMP Retries is the number of times you want the system to try to communicate with a device (without receiving an expected reply, before it is discarded as a non SNMP device).
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Note The maximum number is 10. If SNMP Retries is left at zero, only the initial attempt to communicate with a device is made. If the device does not respond or responds with an error, the device is ignored. |
Step 9 In the Physical Location option box, select the Use Physical Path check box. Make sure the correct path is shown. Select Get Path and select the correct Physical Containment if required. Objects available for selection have an associated green color box. A red color box next to a node indicates that the object is not available.
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Note If the object used to launch Auto Discovery already has a physical location, this is shown by default. Select the path. |
Step 10 To start the Auto Discovery process, select the Do Discovery button. The Discovery Progress window appears.
The Action Log displays the Auto Discovery progress, and displays the results in tabular form.
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Note You can stop the discovery and creation of objects by selecting the Stop button. Objects created before the Stop button is pressed remain created. |
When all the relevant SNMP devices on the network are discovered, an object class is created and stored under the SNMP containment tree.
Devices that respond to SNMP requests are placed in the SNMP containment tree.
When all of the relevant IP devices on the network are discovered, an object class is created and stored under the mgmtContainment and networkContainment trees for each device. When the IP discovery and creation process is complete, any SNMP devices on the network are discovered and have an object class created and stored under the SNMP containment tree.
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Note To restrict the IP address range that the system interrogates, double-click the left mouse button on the displayed Device Interface. The Discovery Interface window appears. Specify a range of IP Addresses by entering a Start Address and a Stop Address. Only IP addresses within the specified addresses are discovered. |
To initiate the discovery and display the progress details of the Auto Discovery process, access the Discovery Progress window and select the Do Discovery button. The total number of objects created appears.
To access the Discovery Progress window:
You can view the discovery progress for the selected device.
Step 2 To terminate the discovery progress, select the Stop button.
To discover a device chassis that is present on a remote network, perform the following steps:
Step 2 Deploy a site in Object Manager that is to contain all of the discovered device chassis objects.
Step 3 Deploy a network object in Object Manager, assigning it the IP address of the network to be discovered.
Step 4 From the newly deployed network object, launch the auto discovery application.
Step 5 Enter appropriate details for retries, community strings, and address range. Select the Physical Containment button and from the Object Selector, select the Site object created in step 2, and press the Apply button.
Step 6 Select the Do Discovery button. The relevant device chassis objects are created under the selected Site object.
Posted: Wed May 17 12:06:29 PDT 2000
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