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Resynchronize Device Configuration

In a network managed by Network Director, the following three separate repositories about device configuration are maintained:

  • The configuration information about the devices themselves.
  • The configuration information maintained by the Junos Space Network Management Platform. When a device is discovered, either by Junos Space or Network Director, Junos Space stores a record of the configuration on that device.
  • The configuration information maintained by Network Director in Build mode. This information is in the form of the profiles assigned to the device, and additional configurations, such as LAG and access point configurations, that you create for device management.

When the configuration information in all the three repositories match, the configuration state of the device is shown as In Sync. If there is a conflict in the configuration information in any one or all of the repositories, the configuration state of the device is shown as Out of Sync. You cannot deploy configuration on a device when the device configuration state is Out of Sync.

To deploy the device configuration in Network Director, the configuration information state of the device must be In Sync. If there are conflicting device configurations, these conflicts need to be resolved by the resynchronization process.

When out-of-band changes occur on a device, the auto-resync operation is triggered. If there are no conflicting changes, the state of the device is shown as In-Sync. If there are conflicting changes, the status of the device is shown as Conflict, in which case you must perform manual resynchronization of the device.

How Network Director performs resynchronization depends on the system of record (SOR) mode set for the Junos Space Network Management Platform. There are two possible modes:

  • Network as system of record (NSOR)—In NSOR mode, the network device is considered the system of record for device configuration, which means the configuration maintained by the device takes precedence over the configuration maintained by Junos Space and Network Director. Thus, when you perform a resynchronization, the Junos Space configuration record and the Network Director Build mode configuration are updated to match the device configuration. This is the default mode. This modes supports both auto-resynchronization and manual resynchronization.
  • Junos Space as system of record (SSOR)—When Junos Space is in SSOR mode, Junos Space is considered the system of record for device configuration. In this mode, when you make an out-of-band configuration change on a device, you can choose whether to accept the change or to overwrite the change with the configuration maintained by Junos Space. This mode supports only manual resynchronization.

Setting up Auto Resynchronization Preferences

In Network Director, the automatic resynchronization feature is enabled by default and cannot be disabled. However, you can enable or disable the purging of unassigned system profiles. Purging of unassigned system profiles removes unassigned profiles generated by Network Director after resynchronization or deletion of a device.

You can enable or disable the purge option under auto-synchronization preferences settings:

  1. Select the Config & Deploy tab in the Preferences window.
  2. Select the option Purge unassigned system profiles after resynchronizing configuration to remove unassigned profiles that were generated by Network Director after resynchronization or deletion of a device.
  3. Specify the time interval in Auto Resync TriggerWait Interval(sec).

    Network Director waits for this time interval before triggering auto-resynchronization. The default time interval is 120 seconds.

  4. Click OK.

Manually Resynchronizing Device Configurations

When the device out-of-band changes conflict with the changes made in Network Director, Network Director does not automatically resynchronize the device changes into Network Director. The device is marked as Conflict. You must manually resynchronize the changes by using the Resynchronize Configuration task. After this, the local changes are discarded and are replaced by the latest network configuration.

How Network Director performs resynchronization depends on the system of record (SOR) mode (either network as system of record (NSOR) or Junos Space as system of record (SSOR)) set for the Junos Space Network Management Platform.

To resynchronize devices when the Junos Space Network Application Platform is in NSOR mode:

  1. In the Resynchronization Device Configuration page, select the device or devices that you want to resynchronize.
  2. (Optional) View any pending changes to a device’s configuration in Network Director by clicking View in the Local Changes column.

    These pending changes are deleted when you resynchronize the device.

  3. Click Resynchronize Configuration.

To resynchronize devices when the Junos Space Network Management Platform is in SSOR mode:

  1. In the Resynchronization Device Configuration page, select the device or devices that you want to resynchronize.
  2. (Optional) View any pending changes to a device’s configuration in Network Director by clicking View in the Local Changes column.

    These pending changes are deleted if you accept the out-of-band changes when you resynchronize the device.

  3. Click Resynchronize Configuration.
  4. In the confirm dialog box, click Accept device changes or Reject device changes depending upon status of the out-of-band changes.
  5. Click Submit.

Related Documentation

Modified: 2016-12-18