Juniper QFabric QFX3008-I, Manual, Page: 85 / 472

CHAPTER 4
QFX3500 Overview
• QFX3500 Device Overview on page 59
• Field-Replaceable Units in a QFX3500 Device on page 63
•
Understanding Redundancy of QFX3500 Device Components and
Functionality on page 64
• Chassis Physical Specifications for a QFX3500 Chassis on page 64
• Front Panel of a QFX3500 Device on page 65
•
Rear Panel of a QFX3500 Device on page 66
•
Cooling System and Airflow for a QFX3500 Device on page 68
• Management Board for a QFX3500 Device on page 71
• AC Power Supply for a QFX3500 Device on page 73
•
DC Power Supply for a QFX3500 Device on page 75
•
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
59 Copyright © 2012, Juniper Networks, Inc.