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Prestaging Devices Process Overview


After Junos Space has discovered the devices, you must perform a two- or three-stage process to pre-stage devices:

  1. Discover roles. In this stage, the Junos Space software searches the database for N-PE devices that have not yet been assigned.
  2. Examine the results of the role discovery and make any exceptions to the system recommendations. Specifically, you might:
    • Exclude specified devices from N-PE role assignment.

      You might need to exclude a device that you know is not a PE device. For example, Provider (P) devices that have loopback addresses pass the rules for N-PE role assignment. For devices that you know are not PE devices, you can edit the configuration out-of-band, and then run role discovery again.

    • Select a different loopback address for a device.

    • Exclude interfaces from UNI assignment.

  3. Confirm the assignments.

When you confirm device assignments, those devices are removed from the list of recommendations. If, initially, you exclude devices from assignment, you can return to the list of recommendations later and make further assignments.

When you add more devices to your network, you need to run the role discovery operation again. Running role discovery again overwrites any devices remaining in the role discovery results list of recommended assignments, but has no effect on devices with confirmed assignments.

  • The Assign Roles screen shows a device inventory of N-PE routers that Network Activate has discovered in its database that have not yet been assigned. You can perform the following operations from the Assign Roles screen:

    • Select multiple devices to assign roles—The most common and recommended prestaging workflow is to select all devices in the Assign Roles screen and assign them all. See Discovering and Assigning All N-PE Devices for step-by-step instructions for assigning all Junos Space recommendations.

    • Select a single device to assign a role—You must select a single device to change the loopback address or the UNI assignments on that device. For step-by-step instructions on selecting a different loopback address, see Changing the Loopback Address of an N-PE Device.

      You can also exclude a single device using this screen.

    • Exclude specified devices from the N-PE role. See Discovering and Assigning N-PE Devices with Exceptions for step-by-step instructions.

  • The Manage Device UNIs screen is an inventory of UNI-qualified interfaces for a specific discovered device. You can view a separate Manage Device UNIs screen for each discovered N-PE device. You can also exclude multiple interfaces from qualification as UNIs. For step-by-step instructions on excluding interfaces from the list of qualified UNIs, see Excluding Interfaces from UNI Role Assignments.

The VPLS service needs to be enabled in a network device, to make the static pseudowire functionality active in the device. You can activate the static pseudowire functionality by configuring the network device through the CLI window. You need to enter the CLI configuration mode of a network element and run the command

set protocols vpls static-vpls no-tunnel-services


If the device is not configured through CLI, a warning message appears in the application server log, that is the JBOSS Log:

<Device name> should be configured with static VPLS no tunnel service rule.

To discover the roles of the various network elements configured:

1. Select Network Activate > Prestage Devices > Manage Device Roles.

2. Select Discover Roles to view the relevant window.

3. Click Continue to view the Role Discovery Status window.

The Role Discovery Status window displays a graph which shows the number of unassigned devices that could be assigned the role of N-PE or PE.

To re-sync the role of the network elements configured:

1. Select Network Activate >Prestage Devices > Manage Device Roles.

2. To re-sync the role capability of a network element, right-click the network element’s name.

3. Click Re-sync Role Capability. The Re-sync Role Capability window appears where you can select the device’s name and click Re-sync.

The role is re-synced with the same device now.