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    Discovering and Assigning N-PE Devices with Exceptions

    Preparing network devices for service activation is usually a simple process which directs the Network Activate software to prepare your devices automatically. When you pre-stage devices, the Network Activate software scans the database for devices that have already been discovered but have no MPLS role assigned, and recommends a role for each device it finds, based on the device configuration data and a set of predefined rules. You can then display those devices and their recommended settings for:

    • MPLS role for the device (PE only)
    • Loopback interface
    • UNI interfaces

    The Network Activate software allows you to exclude specific recommended devices from being assigned the N-PE role and to exclude interfaces from use as UNIs during service provisioning. You can also change the loopback address of a PE device..

    For step-by-step instructions on how to prepare devices for network activation using all the recommendations for N-PE role assignment and UNI assignment that the Network Activate software makes, see Discovering and Assigning All N-PE Devices. These topics describe how to pre-stage devices with exceptions:

    Discovering Device Roles

    Before discovering device roles, you must run device discovery. See Discovering Devices in the Junos Space Network Application Platform User Guide.

    To discover unassigned PE devices:

    1. In the Network Activate task pane, select Prestage Devices > Manage Device Roles > Discover Roles.

      The Role Discovery Status window shows the discovery of unassigned devices found in the database.

      Note: If this is not the first time you have run the discover roles operation, this action overwrites any recommendations remaining from the previous discover roles operation. Devices with confirmed roles are not affected.

      The Targets Processed box contains a progress bar, which when finished, shows how many unassigned devices the Network Activate software found in its database.

      The graph portion of this example shows how many of the unassigned devices the pre-staging rules determined could be assigned the N-PE role and how many could be assigned the P role. The UNKNOWN bar indicates devices that had no MPLS role assigned but for which the Network Activate software was unable to recommend a role.

    2. To view the devices for which the Network Activate software recommends the PE role, click on the N_PE bar.

      The Assign Roles page appears.

      The question mark on each icon indicates that the device role has not yet been assigned.

      Note: You cannot discover a device as a PE device if no user-to-network interfaces (UNIs) are available in the device.

      The Network Activate application throws the following error message:

      2012-06-08 10:17:23,446 ERROR [PreStageDeviceManagerBean] (PreStageDeviceManagerBean#savePreStageDeviceList Thread-6894 (group:HornetQ-client-global-threads-1332782448):) No ge/fe/at/t1 interfaces in this PE device: junos-mx480-space; it can only be used for virtual routers

    Excluding Devices from N-PE Role Assignment

    The rules-driven process that the Network Activate software uses to discover device roles recommends the correct roles in most cases. To exclude a device from N-PE role assignment:

    1. In the Network Activate task pane, select Prestage Devices > Manage Device Roles > Assign Roles.

      The results of the most recent role discovery operation appear.

    2. In the Assign Roles page, select the N-PE device that you want to exclude from role assignment. To exclude several N-PE devices, use the multiple selection capability.
    3. Open the Actions menu and select Exclude from NPE Role.

      The Assign Roles page refreshes. The excluded devices are no longer visible.

    Changing the Loopback Address of an N-PE Device

    The Network Activate software allows you to change the loopback address of an N-PE device to that of a different loopback unit.

    Note: Although Junos software allows you to assign multiple loopback addresses to the same loopback unit, the Junos Space software recognizes only the first address assigned to the loopback unit. Therefore, when you change the loopback address of an N-PE device, it must be to that of a different loopback unit.

    To change the loopback address of an N-PE device:

    1. In the Network Activate task pane, select Prestage Devices > Manage Device Roles > Assign Roles.

      The results of the most recent role discovery operation appear, including any changes you have subsequently made to your pre-staging data.

      Repeat Step 2 through Step 5 for each device for which you want to change the loopback address.

    2. In the Assign Roles page, select the device for which you want to change the loopback address.
    3. Open the Actions menu and select Modify Loopback Address.
    4. In the Modify Loopback Address window, select the loopback address you want to use.
    5. Click Modify.

      The new loopback address appears.

    Excluding Interfaces from UNI Role Assignments

    To exclude interfaces from the list of interfaces that the pre-staging rules determined were suitable for use as UNIs:

    1. In the Network Activate task pane, select Prestage Devices > Manage Device Roles > Assign Roles.

      The results of the most recent role discovery operation appear, including any changes you have subsequently made to your pre-staging data.

      Repeat Step 2 through Step 7 for each device for which you want to exclude some recommended UNI selections:

    2. In the Assign Roles page, select the device for which you want to manage UNIs.
    3. Open the Actions menu and select Manage Device UNIs.

      The Manage Device UNIs window shows all the device interfaces for the selected device and indicates those that the Network Activate software recommends for use as UNIs.

    4. In the Manage Device UNIs window, select the UNI you want to exclude.

      To exclude more than one UNI, use the multiple selection capability.

    5. Open the Actions menu and select Exclude from UNI Role.
    6. Open the Actions menu and select Return to Assign Roles to return to the Assign Roles page.

    Committing Your Pre-Staging Choices

    This procedure provides instructions for assigning the N-PE role to selected devices and committing all device pre-staging information to the database.

    Before performing these steps, you must complete the following tasks:

    • Discover devices that have not yet been assigned an MPLS role.
    • Exclude from the list of discovered devices those devices that you do not want to assign the N-PE role to.
    • On each device, exclude the interfaces you do not want used as UNIs.

    To commit your pre-staging choices to the database:

    1. In the Network Activate task pane, select Prestage Devices > Manage Device Roles > Assign Roles.
    2. Examine the list of devices to be sure these are the devices you want to assign the N-PE role.
    3. Select all devices.
    4. Open the Actions menu and click Assign NPE Role.
    5. In the confirmation screen, click Assign.
    6. To view the assignment status, in the Job Management screen, click the job ID of the assignment job.

      The Job Management page shows the progress and status of the role assignment job. See Viewing Jobs in the Junos Space Network Application Platform User Guide for details.

      While the job is ongoing, you cannot make additional assignments from the Assign Roles page. The Assign NPE Role action is dimmed to indicate you cannot select it.

      Note: After you pre-stage a device, you can check to see if a particular device is capable of supporting Layer 2 or Layer 3 services.

      In the Network Activate task pane, select Prestage Devices > Manage Device Roles. Double-click the device for which you want to check its service capability. The NPE Details window appears.

      Check the Service capability field to ensure that the values L2, L3 appear, which indicate that the device can support Layer 2 and Layer 3 services.

      Note: If you modify the configuration of a device after the device is pre-staged, remove the device from pre-staged status and then Discover Roles and pre-stage the device again.

    Modified: 2017-02-21