Juniper QFabric QFX3000-G Hardware Documentation page 599

Copyright © 2018, Juniper Networks, Inc.
The number of uplink connections from your Node device to your Interconnect devices
determines the oversubscription ratio on the Node device.
CAUTION: For redundancy, each QFX3500 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
QFX3500 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 all 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
Ensure you have installed QSFP+ transceivers in each port you are using. See
a Transceiver in a QFX Series Device" on page
Ensure that you have appropriate fiber-optic cables (see
Tool ).
To connect a QFX3500 Node device to a QFX3008-I Interconnect device:
WARNING: Do not look directly into a fiber-optic transceiver or into the ends
of fiber-optic cables. Fiber-optic transceivers and fiber-optic cables connected
to transceivers emit laser light that can damage your eyes.
If the fiber-optic cable connector is covered by a rubber safety cap, remove the cap.
1.
Save the cap.
Remove the rubber safety cap from the QSFP+ optical transceiver on the QFX3500
2.
Node device. Save the cap.
Insert the cable connector into the optical transceiver.
3.
If the connector at the other end of the fiber-optic cable is covered by a rubber safety
4.
cap, remove the cap. Save the cap.
Remove the rubber safety cap from the QSFP+ optical transceiver on the 16-port
5.
QSFP+ front card on the QFX3008-I Interconnect device. Save the cap.
Chapter 37: Cabling the Data Plane for the QFX3000-G QFabric System
for information about the optical interface
709.
350).
"Installing
The Hardware Compatibility
549