Juniper QFabric QFX3000-G Hardware Documentation page 595

CHAPTER 37
Cabling the Data Plane for the
QFX3000-G QFabric System
Connecting a QFX5100 Node Device to a QFX3008-I Interconnect Device
Copyright © 2018, Juniper Networks, Inc.
Connecting a QFX5100 Node Device to a QFX3008-I Interconnect Device on page 545
Connecting a QFX3600 Node Device to a QFX3008-I Interconnect Device on page 547
Connecting a QFX3500 Node Device to a QFX3008-I Interconnect Device on page 548
To form the data plane in a QFX3000-G QFabric system, you connect the QSFP+ uplink
ports (labeled through
48
16-port QSFP+ front cards in a QFX3008-I Interconnect device.
The number of uplink connections from your Node device to your Interconnect devices
determines the oversubscription ratio on the Node device (see Understanding Port
Oversubscription on Node Devices).
CAUTION: For redundancy, each QFX5100 Node device must be connected
to each QFX3008-I Interconnect device. For example, if you have two
QFX3008-I Interconnect devices, then at least one uplink port on each
QFX5100 Node device must be connected to each QFX3008-I Interconnect
device. If you have four QFX3008-I Interconnect devices, then each uplink
port should be connected to a different QFX3008-I Interconnect device. If
you are connecting four uplink ports to two QFX3008-I Interconnect devices,
we recommend connecting two uplink ports to each Interconnect device,
each to a different front card.
Before you begin to cable the QFX3000-G QFabric system data plane:
Review
The Hardware Compatibility Tool
characteristics.
Ensure that you have taken the necessary precautions for safe handling of lasers (see
"Laser and LED Safety Guidelines and Warnings for the QFX Series" on page
) on the QFX5100 Node device to the QSFP+ ports on the
51
for information about the optical interface
350).
545