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QFX5700 Console and Management Cable Specifications and Pinouts

The following sections describe the console port, the USB port, and the management port connections and specifications for the QFX5700 switch.

Management Cable Specifications for QFX5700 Switches

This table lists the specifications for the cables that connect the console and management ports to management devices.

Table 1: Specifications of Cables to Connect to Management Devices

Ports

Cable Specifications

Receptacle

Additional Information

RJ-45 Console port

CAT5e unshielded twisted pair (UTP) cable

RJ-45

Management Ethernet port

Ethernet cable with an RJ-45 connector

RJ-45

RJ-45 to DB-9 Serial Port Adapter Pinout Information

The console port is an RS-232 serial interface that uses an RJ-45 connector to connect to a management device such as a laptop or a desktop PC. If your laptop or desktop PC does not have a DB-9 plug connector pin and you want to connect your laptop or desktop PC to the device, use a combination of the RJ-45 to DB-9 socket adapter along with a USB to DB-9 plug adapter. This table provides the pinout information for the RJ-45 to DB-9 serial port adapter.

Note:

The RJ-45 console port is a multiplexed port for both console (pins 3&6) and TOD (Time of the day), Pin 2 - TOD TXD, and Pin 7- TOD RXD. A split cable is required to use both the functionalities.

RJ-45 Pin

Signal

DB-9 Pin

Signal

3

TxD

2

RxD

6

RxD

3

TxD

Console Port Connector Pinouts for a QFX5700

The console port (labeled CON) on the Routing and Control Board (RCB) panel is an RS-232 serial interface that uses an RJ-45 connector to connect to a console management device. The baud rate for the console port must be set to 115200 baud.

Table 2 provides the pinout information for the RJ-45 console connector.

Note:
We no longer include the RJ-45 console cable with the DB-9 adapter as part of the device package. If the console cable and adapter are not included in your device package, or if you need a different type of adapter, you can order the following separately:
  • RJ-45 to DB-9 adapter (JNP-CBL-RJ45-DB9)
  • RJ-45 to USB-A adapter (JNP-CBL-RJ45-USBA)
  • RJ-45 to USB-C adapter (JNP-CBL-RJ45-USBC)

If you want to use RJ-45 to USB-A or RJ-45 to USB-C adapter you must have X64 (64-Bit) Virtual COM port (VCP) driver installed on your PC. See, https://ftdichip.com/drivers/vcp-drivers/ to download the driver.

Note:

If your laptop or PC does not have a DB-9 connector pin (plug) and you want to connect your laptop or PC directly to a QFX5700 switch, use a combination of the RJ-45 cable and RJ-45 to DB-9 adapter (not provided) and a USB to DB-9 plug adapter. You must provide the USB to DB-9 plug adapter.

Table 2: Console Port Connector Pinouts for the QFX5700 Switches

Pin

Signal

Input/Output

2

TxD

OUT

6

RxD

IN

USB Port Specifications for the QFX5700

The following Juniper Networks USB flash drives have been tested and are officially supported for the USB port in the QFX5700 switches:

  • RE-USB-1G-S—1-gigabyte (GB) USB flash drive

  • RE-USB-2G-S—2-GB USB flash drive

  • RE-USB-4G-S—4-GB USB flash drive

CAUTION:

Any USB memory product not listed as supported for the QFX5700 switches has not been tested by Juniper Networks. The use of any unsupported USB memory product could expose your device to unpredictable behavior. Juniper Networks Technical Assistance Center (JTAC) can provide only limited support for issues related to unsupported hardware. We strongly recommend that you use only supported USB flash drives.

CAUTION:

Remove the USB flash drive before upgrading Junos OS or rebooting QFX5700 switches. Failure to do so could expose your device to unpredictable behavior.

Note:

USB flash drives used with the QFX5700 switch must support USB 2.0 or later.