Juniper QFX3000-G QFabric, Deployment Manual, Page: 115 / 652

you need on the access ports of the Node device. Table 18 on page 89 shows the number
of connections required from each Node device to Interconnect devices based on the
oversubscription ratio you need on the Node device.
Table 18: Number of Connections Required Between Node and Interconnect Devices Based on
Oversubscription Ratio
Number of Connections from Each Node Device to
Interconnect Devices
Oversubscription Ratio
8 1:1 (Supported on QFX3600 Node devices only)
4 3:1
2 6:1
•
Power supply—You must plan the installation site to meet the power requirements of
all the devices in the QFX3000 QFabric system. For information on power requirements
and configuration options for each device, see the following topics:
• AC Power Specifications for a QFX3100 Director Device on page 129
•
AC Power Specifications for a QFX3008-I Interconnect Device with Single-Phase
Wiring Trays on page 131
• AC Power Specifications for a QFX3008-I Interconnect Device with Three-Phase
Delta Wiring Trays on page 132
•
AC Power Specifications for a QFX3008-I Interconnect Device with Three-Phase
Wye Wiring Trays on page 132
• AC Power Specifications for a QFX3600 or QFX3600-I Device on page 137
• AC Power Specifications for a QFX3500 Device on page 138
•
Power Specifications for EX4200 Switches
•
For more information about the site preparation requirements for each device, see the
following topics:
• Site Preparation Checklist for a QFX3100 Director Device
• Site Preparation Checklist for a QFX3008-I Interconnect Device
•
Site Preparation Checklist for a QFX3600 or QFX3600-I Device
•
Site Preparation Checklist for a QFX3500 Device
• Site Preparation Checklist for EX4200 Switches
Related
Documentation
QFX3000-G QFabric System Installation Overview on page 83
•
•
Understanding QFX3000-G QFabric System Hardware Configurations on page 85
•
Understanding Port Oversubscription on Node Devices on page 29
89 Copyright © 2015, Juniper Networks, Inc.
Chapter 6: Before You Begin