Table 62: Number Of Connections Required Between Node And Interconnect Devices Based On Oversubscription Ratio - Juniper QFabric QFX3000-G Hardware Documentation

Table 62: Number of Connections Required Between Node and Interconnect Devices Based on Oversubscription
Ratio
Oversubscription Ratio
1:1
3:1
3.5:1
6:1
Copyright © 2018, Juniper Networks, Inc.
Cabling requirements for the control plane and management network—The control
plane and management network are interconnected using standard 1000BASE-T
Ethernet over copper wiring. Each network segment can be a maximum length of 100 m
(328 ft). See "Cable Specifications for Copper-Based Control Plane Connections for
the QFabric System" on page
Cabling requirements for the data plane—The data plane is interconnected using
standard 40GBASE-SR Ethernet QSFP+ optical transceivers over fiber-optic wiring. If
you use OM3 optical fiber, each network segment can be a maximum of 100 m (328 ft).
If you use OM4 optical fiber, each network segment can be a maximum of 150 m (492
ft). However, keep in mind that each network segment in the control plane and
management network is limited to a maximum length of 100 m (328 ft). See
"Determining Transceiver Support for QFabric Systems" on page
The data plane cabling requirements depend on the number of connections required
from each Node device to Interconnect devices based on the oversubscription ratio
you need on the access ports of the Node device.
number of connections required from each Node device to Interconnect devices based
on the oversubscription ratio you need on the Node device.
QFX Series Switch Model
QFX3600
QFX5100-24Q
QFX3600
QFX3500
QFX5100-48S
QFX5100-48T
QFX3600
QFX3500
QFX5100-24Q with 2 QFX-EM-4Q
Power supply—You must plan the installation site to meet the power requirements of
all the devices in the QFX3000-G 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 277
AC Power Specifications for a QFX3008-I Interconnect Device with Single-Phase
Wiring Trays on page 281
AC Power Specifications for a QFX3008-I Interconnect Device with Three-Phase
Delta Wiring Trays on page 282
265.
Table 62 on page 207
Number of Connections from
Each Node Device to
Interconnect Devices
8
16
4
4
2
4
Chapter 9: Site Preparation
258.
shows the
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