Juniper QFabric QFX3000-G Hardware Documentation page 166

QFX3000-G QFabric System Hardware Documentation
Software
Hardware
116
In a QFabric system, a QFX3500 device functions as a Node device, connected to a
QFabric system through 40-Gbps uplink ports to a Juniper Networks QFX3008-I or
QFX3600-I Interconnect device. Together, the QFX3500 Node devices and QFX3008-I
or QFX3600-I Interconnect devices form a multistage, nonblocking switch fabric that
provides a high-performance, low-latency, unified interconnect solution for
next-generation data centers.
The QFX3500 Node devices and 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 management of your
data center using the Junos OS command-line interface (CLI).
In a QFX Virtual Chassis, the QFX3500 device can participate with other QFX3500 devices
and QFX3600 devices in a ring topology with up to 10 members.
In a QFX5100 Virtual Chassis Fabric, the QFX3500 device can participate as a leaf device.
Up to a total of 20 devices can participate in the QFX5100 Virtual Chassis Fabric.
Software on page 116
Hardware on page 116
QFX Series devices use the Junos operating system (OS), which provides Layer 2 and
Layer 3 switching, routing, and security services. Junos OS is installed on the QFX3500
device's 8-gigabyte (GB) internal flash drive. The same Junos OS code base that runs
on QFX3500 devices also runs on all Juniper Networks EX Series switches, and J Series,
M Series, MX Series, and T Series routers.
For more information about which features are supported on QFX Series devices, see
.
Feature Explorer
When the QFX3500 device is operating as a standalone switch, you manage the switch
using the Junos OS command-line interface (CLI), accessible through the console and
out-of-band management ports on the device.
When a QFX Series device operates as part of a QFabric system, all the devices in the
data center fabric are managed through the Administrator software installed on the
QFX3100 Director devices. Each device in a QFabric system is interconnected in a single
control plane and management network, using the redundant management ports on
each device.
The compact QFX3500 device is 1 rack unit (1 U) in size and designed to fit in
industry-standard 19-inch rack-mount enclosures. See
Figure 79 on page 117 and "Chassis Physical Specifications for a QFX3500 Chassis" on
page 121.
Figure 78 on page 117 and
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