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Understanding the Director Software

The Director software provides a single view into the QFabric system so that it can be managed as a single entity. This topic explains how the Director software interacts with the components of the QFabric system to maintain operations from a central location.

Because the QFabric system consists of multiple Director, Node, and Interconnect devices, the architects of the QFabric system determined that it would be useful to manage the entire system as a single logical entity. As a result, the Director software handles administration tasks for the entire QFabric system, such as fabric management and configuration. The Director software runs on the Director group, provides a single consolidated view of the QFabric system, and enables the main QFabric system administrator to configure, manage, monitor, and troubleshoot QFabric system components from a centralized location. In the Junos operating system (Junos OS) command-line interface (CLI), you can access the Director software by logging in to the default partition.

The Director software handles the following major tasks for the QFabric system:

  • Provides command-line interface (CLI) access to all QFabric system components that you have permission to manage or view.

  • Evaluates configuration statements and operational mode commands for their scope and sends requests to the applicable Director, Node, and Interconnect devices. (This operation is sometimes referred to as scattering.)

  • Consolidates responses from Director, Node, and Interconnect devices, and displays output from the devices in a unified, centralized manner. (This operation is sometimes referred to as gathering.)

  • Coordinates configuration and operational efforts with a database housed in the Director group to store and retrieve configurations, software images, event logs, and system log messages.

  • Facilitates control plane communication between the Node devices, the Routing Engine services running on the Director group, and the Interconnect devices.

  • Runs parallel processes on the Director group devices to provide high availability for the QFabric system.

  • Coordinates interactions with QFabric system components to provide load balancing of processing tasks across the Director group devices.

  • Manages user access and privileges.

  • Enables you to configure, manage, monitor, and troubleshoot QFabric system components that are assigned to you.

  • Gathers QFabric system inventory and topology details.

  • Offers a way to manage Director group devices, including the ability to add and delete Director devices in the group, set and switch primary role in the Director group, and monitor Director group status.

  • Provides a centralized way to coordinate software upgrades for QFabric system components.

The Director software provides a backbone of functionality that supports the entire QFabric system. It is an essential component of the QFabric system that enables you to implement the system in a logical and efficient way.