Management

What are out-of-band changes and how does Network Director handle them?

By Elevate posted 02-26-2016 00:30

  

Question

What are out-of-band changes and how does Network Director handle them?

Answer

Out-of-band configuration changes are changes you make to a device configuration through any method other than deploying the configuration change from Deploy mode in Network Director.

 

Out-of-band changes include configuration changes made by:

  • Using the device CLI.
  • Using the device Web-based management interface (J-Web interface or Web View).
  • Using the Junos Space Network Management Platform configuration editor.
  • Using RingMaster.
  • Using any other Junos Space application.
  • Restoring or replacing device configuration files.

The above configuration changes are out-of-band even if you use Network Director to access the device management interface or to restore configuration files.

 

When you make out-of-band changes, Network Director detects that the configuration has changed on the device. It sets the device configuration state to Out of Sync because the device configuration no longer matches the Build mode configuration for the device. You cannot deploy configuration on devices that are in the Out of Sync state.

 

To return the device configuration state to In Sync, use the Resynchronize Device Configuration task in Deploy mode. This task resynchronizes the device’s configuration stored in Network Director to match the device configuration. It disassociates all profiles from the device and then reimports the device configuration. Reimporting the device configuration reestablishes the original profile associations if they were unaffected by the out-of-band configuration changes and creates new profiles and associations as needed.
Deploy mode is available in Logical View, Location View, and Device View. Change views from the Views list in the Network Director Banner.

 

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). This is the default mode.
  • Junos Space as system of record (SSOR).

You set the mode in Junos Space under Administration > Applications > Network Management Platform > Modify Application Settings.

 

In NSOR mode, the network device is considered the system of record for device configuration, which means that 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.

 

When Junos Space is in SSOR mode, Junos Space is considered the system of record for device configuration. In this mode, when an out-of-band configuration change occurs on a device, you can choose whether to accept the change or to overwrite the change with the configuration maintained by Junos Space.

 

You can learn more about the build mode in Network Director, resynchronization of device configuration, and systems of record in Junos Space in Network Director from the Network Director user documentation or online Help.


#FAQ
#out-of-bandchanges
#resynchronize
#JunosSpaceNetworkDirector
#NSOR
#NetworkDirector
#SSOR
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