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QFX5100 Cable and Pinout Specifications

Cable Specifications for Console and Management Connections for the QFX Series

Table 1 lists the specifications for the cables that connect the QFX Series switch to a management device.

Note:

The QFX Series can be configured with SFP management ports that support 1000BASE-SX transceivers. See the Hardware Compatibility Tool for more on the fiber-optic cables required for use with these transceivers.
Table 1: Cable Specifications for Console and Management Connections for the QFX Series

Port on QFX Series Device

Cable Specification

Cable Supplied

Maximum Length

Device Receptacle

Console port

RS-232 (EIA-232) serial cable

One 7-foot (2.13-meter) long RJ-45 patch cable and RJ-45 to DB-9 adapter

7 feet (2.13 meters)

RJ-45

Management port

Category 5 cable or equivalent suitable for 1000BASE-T operation

One 7-foot (2.13-meter) long RJ-45 patch cable

328 feet (100 meters)

RJ-45

RJ-45 Management Port Connector Pinout Information

Table 2 provides the pinout information for the RJ-45 connector for the management port on Juniper Networks devices.

Table 2: RJ-45 Management Port Connector Pinout Information

Pin

Signal

Description

1

TRP1+

Transmit/receive data pair 1

2

TRP1-

Transmit/receive data pair 1

3

TRP2+

Transmit/receive data pair 2

4

TRP3+

Transmit/receive data pair 3

5

TRP3-

Transmit/receive data pair 3

6

TRP2-

Transmit/receive data pair 2

7

TRP4+

Transmit/receive data pair 4

8

TRP4-

Transmit/receive data pair 4

Console Port Connector Pinouts for the QFX Series

The console port (labeled CON, 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 3 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 plug 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 plug adapter. You must provide the USB to DB-9 plug adapter.
Table 3: Console Port Connector Pinouts for the QFX Series

Pin

Signal

Description

3

TxD Output

Transmit data

4

Signal Ground

Signal ground

5

Signal Ground

Signal ground

6

RxD Input

Receive data

Copper Cable Specifications for QFX5100-48T and QFX5100-48TH Switches

The QFX5100-48T and QFX5100-48TH switches have 10GBASE-T interfaces that use various types of copper network cables. To achieve optimal performance, you must use cables that conform to IEEE 802.3-2012 specifications for connections for 10GBASE-T network ports. Table 4 lists the cable specifications for 10GBASE-T port on QFX5100-48T and QFX5100-48TH switches.

Table 4: Cable Specification for 10GBASE-T Network Ports

Ports on Switches

IEEE Cable Standard

Shield or Unshielded Twisted Pair (STP/UTP)

Cable Standard Specification

Maximum Reach

Frequency (MHz)

Additional Information

10GBASE-T

Class F/ CAT 7

STP

ISO/IEC 11801:2002

328 ft (100 m)

1–600

Class EA/ CAT 6A

STP/UTP

ANSI/TIA/EIA-568-B2-10

328 ft (100 m)

1–500

Class E/ CAT 6

UTP

ANSI/TIA/EIA 568-B.2-1

98 ft (30 m)

1–250

CAT 6 cables are defined to perform at frequencies up to 250 MHz and are sensitive to alien crosstalk. To use such cables to connect to 10GBASE-T ports, you must ensure that the cable installation is tested and is certified for 500 MHz as per TIA TSB-155 standard.

Class E/ CAT 6

STP

ANSI/TIA/EIA 568-B.2-1

98 ft (30 m)

1–250

1000BASE-T

CAT 5eCAT 6CAT 6A (STP/UTP)

STP/UTP

ANSI/TIA/EIA-568-AANSI/TIA/EIA-568-B.2-1ANSI/TIA/EIA-568-B2-10

328 ft (100 m)

1-1001-2501-500

  

100BASE-TX

CAT 5eCAT 6CAT 6A (STP/UTP)

STP/UTP

ANSI/TIA/EIA-568-AANSI/TIA/EIA-568-B.2-1ANSI/TIA/EIA-568-B2-10

328 ft (100 m)

1-1001-2501-500

  

See Also

USB Port Specifications for the QFX Series

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

  • RE-USB-1G-S—1-gigabyte (GB) USB flash drive (except QFX3100 Director device)

  • RE-USB-2G-S—2-GB USB flash drive (except QFX3100 Director device)

  • RE-USB-4G-S—4-GB USB flash drive

CAUTION:

Any USB memory product not listed as supported for the QFX Series 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 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.