Juniper QFX3000-G QFabric, Deployment Manual, Page: 58 / 652

Related
Documentation
Understanding QFabric System Terminology on page 7
•
•
Understanding the QFabric System Hardware Architecture on page 15
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Understanding the Director Software on page 32
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Understanding Partitions on page 33
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Understanding the QFabric System Control Plane on page 35
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Understanding the QFabric System Data Plane on page 38
Understanding the Director Software
Supported Platforms QFabric System
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.
Copyright © 2015, Juniper Networks, Inc. 32
QFX3000-G QFabric System Deployment Guide