CAUTION: Remove the USB flash drive before upgrading Junos OS or
rebooting a QFX Series device. Failure to do so could expose your device to
unpredictable behavior.
NOTE: Executing the request system snapshot CLI command on a QFX3500
device requires an external USB flash drive with at least 4 GB of free space.
We recommend using the RE-USB-4G-S flash drive.
NOTE: USB flash drives used with the QFX Series device must support
USB 2.0 or later.
Related
Documentation
Creating an Emergency Boot Device on page 235•
• Performing a Recovery Installation
Console Port Connector Pinouts for the QFX Series
The console port (labeled CON, C1, or CONSOLE) is an RS-232 serial interface that uses
an RJ-45 connector to connect to a console management device. The default baud rate
for the console port is 9600 baud.
Table 31 on page 84 provides the pinout information for the RJ-45 console connector. An
RJ-45 cable and RJ-45 to DB-9 adapter are supplied with the QFX Series device.
NOTE: If your laptop or PC does not have a DB-9 male connector pin and you
want to connect your laptop or PC directly to a QFX Series device, use a
combination of the RJ-45 cable and RJ-45 to DB-9 adapter supplied with the
device and a USB to DB-9 male adapter. You must provide the USB to DB-9
male adapter.
Table 31: Console Port Connector Pinouts for the QFX Series
DescriptionSignalPin
Request to sendRTS Output1
Data terminal readyDTR Output2
Transmit dataTxD Output3
Signal groundSignal Ground4
Signal groundSignal Ground5
Copyright © 2016, Juniper Networks, Inc.84
QFX5100 Switch Hardware Guide
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