Juniper QFX Series User Manual

CHAPTER 4
QFX3500 Overview
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QFX3500 Device Overview on page 59
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Field-Replaceable Units in a QFX3500 Device on page 63
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Understanding Redundancy of QFX3500 Device Components and
Functionality on page 64
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Chassis Physical Specifications for a QFX3500 Chassis on page 64
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Front Panel of a QFX3500 Device on page 65
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Rear Panel of a QFX3500 Device on page 66
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Cooling System and Airflow for a QFX3500 Device on page 68
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Management Board for a QFX3500 Device on page 71
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AC Power Supply for a QFX3500 Device on page 73
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DC Power Supply for a QFX3500 Device on page 75
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Grounding Cable and Lug Specifications for a QFX3500 Device on page 77
QFX3500 Device Overview
The Juniper Networks QFX3500 device is a high-speed, multipurpose switch especially
designed for next-generation data centers. It provides a total switching capacity and
throughput of 640 Gbps. Forty-eight 10-Gbps access ports in the device use small
form-factor pluggable plus (SFP+) transceivers and operate by default as
10-Gigabit Ethernet interfaces. Optionally, you can choose to configure up to 12 of the
ports as 2-Gbps, 4-Gbps, or 8-Gbps Fibre Channel (FC) interfaces, and up to 36 of the
ports as 1-Gigabit Ethernet interfaces. Four 40-Gbps uplink ports in the device use quad
small form-factor pluggable plus (QSFP+) to four SFP+ copper breakout cables to
support an additional 15 10-Gigabit Ethernet interfaces.
QFX3500 devices can function as a Fibre Channel over Ethernet (FCoE)-FC gateway or
as an FCoE transit switch. FCoE is a method of supporting converged FC and Ethernet
traffic on a data center bridging (DCB) network by encapsulating unmodified FC frames
in Ethernet to transport the FC frames over the physical Ethernet network.
In a QFX3000 QFabric system, a QFX3500 device functions as a Node device, connected
to the QFabric system through 40-Gbps uplink ports to a Juniper Networks QFX3008-I
Interconnect Device. Together, the QFX3500 devices and QFX3008-I Interconnect
59Copyright © 2012, Juniper Networks, Inc.

Juniper QFX Series Specifications

General

Category	Switch
Series	QFX
Form Factor	1U, 2U, and modular chassis options
Power Supply	Redundant, hot-swappable power supplies
Cooling	hot-swappable fans
Virtual Chassis	Supported on certain models
Typical Use	Data center, cloud
Operating System	Junos OS
Management	CLI
Key Features	High performance, low latency, automation
Latency	Sub-microsecond latency
Port Density	Varies by model (e.g., QFX5100: up to 48x10GbE + 6x40GbE)