Juniper QFX Series - QFX3500 Overview; QFX3500 Device Overview

CHAPTER 3
QFX3008-I Overview
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QFX3008-I Interconnect Device Overview on page 33
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Field-Replaceable Units in a QFX3008-I Interconnect Device on page 38
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Understanding Redundancy of QFX3008-I Interconnect Device Components and
Functionality on page 39
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Slot Numbering for a QFX3008-I Interconnect Device on page 40
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Chassis Physical Specifications for a QFX3008-I Interconnect Device on page 41
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Midplane in a QFX3008-I Interconnect Device on page 42
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Front Panel Display of the QFX3008-I Interconnect Device on page 43
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Cooling System and Airflow in a QFX3008-I Interconnect Device on page 44
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16-Port QSFP+ Front Cards in a QFX3008-I Interconnect Device on page 48
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Control Board in a QFX3008-I Interconnect Device on page 49
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Rear Cards in a QFX3008-I Interconnect Device on page 51
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AC Power Supply in a QFX3008-I Interconnect Device on page 52
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Wiring Tray in a QFX3008-I Interconnect Device on page 54
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Grounding Cable and Lug Specifications for a QFX3008-I Interconnect
Device on page 57
QFX3008-I Interconnect Device Overview
The QFX3008-I Interconnect device is a half-rack, modular, fully redundant chassis that
provides the data plane switch fabric for Juniper Networks QFX3500 Node devices.
Together the QFX3500 Node device and the QFX3008-I Interconnect device form a
multistage, nonblocking switch fabric that provides a high-performance, low-latency,
unified interconnect solution for next-generation data centers. See Understanding the
QFabric Switch Data Plane.
The QFX3500 Node devices and QFX3008-I Interconnect Devices are connected to
Juniper Networks QFX3100 Director devices in an out-of-band management network
through Juniper Networks EX4200 Ethernet Switches. The QFX3100 Director devices
present the QFabric system devices as a single network entity, which enables simplified
33Copyright © 2012, Juniper Networks, Inc.