Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

Connecting the QFX5210

 

Connecting the QFX5210 to Ground

You must install the QFX5210 in a restricted-access location and ensure that the chassis is always properly grounded. The QFX5210 has a two-hole protective grounding terminal provided on the chassis. See Figure 1. We recommend that you use this protective grounding terminal as the preferred method for grounding the chassis regardless of the power supply configuration. However, if additional grounding methods are available, you can also use those methods. For example, you can use the grounding wire in the power cord for AC power supplies or use the grounding terminal or lug on a DC power supply. The QFX5210 is tested to meet or exceed all applicable EMC regulatory requirements with the two-hole protective grounding terminal when connected correctly as described in this topic.

Caution

If an external ground connection is required, ensure that a licensed electrician has attached an appropriate grounding lug to the grounding cable that you supply. Using a grounding cable with an incorrectly attached lug can damage the switch (for example, by causing a short circuit).

Note

Mount your switch in the rack or cabinet before attaching the grounding lug to the switch. See Unpacking and Mounting the QFX5210.

Ensure that you have the following parts and tools available:

  • Grounding cable for your QFX5210—The grounding cable must be 10 AWG (5 mm²), minimum 90° C wire, or as permitted by the local code.

  • Grounding lug for your grounding cable—The grounding lug required is a Panduit LCD10-10A-L or equivalent (not provided).

  • Two #10-32 UNF screws and washers (not provided).

  • Screwdriver appropriate for the #10-32 UNF screws (not provided).

An AC-powered QFX5210 switch chassis gains additional grounding when you plug the power supply in the switch into a grounded AC power outlet by using an AC power cord appropriate for your geographical location. See AC Power Cord with Type C15 Coupler Specifications.

To connect earth ground to a QFX5210:

  1. Secure the protective earthing terminal bracket to the FRU panel of the QFX5210 chassis with two #10-32 UNF screws. The posts on the protective earthing terminal bracket should point to the left. See Figure 1 .
    Figure 1: Connecting a Grounding Cable to a QFX5210-64C
    Connecting
a Grounding Cable to a QFX5210-64C
  2. Connect one end of the grounding cable to a proper earth ground, such as the rack in which the switch is mounted.
  3. Place the grounding lug attached to the grounding cable over the protective earthing terminal on the protective earthing terminal bracket.
  4. Secure the grounding lug to the protective earthing terminal with the two washers and screws.
  5. Dress the grounding cable and ensure that it does not touch or block access to other device components and that it does not drape where people could trip over it.

Connect a Device to a Network for Out-of-Band Management

You can monitor and manage the device by using a dedicated management channel. Each device has a management port to which you can connect an Ethernet cable with an RJ-45 connector. Use the management port to connect the device to the management device.

Ensure that you have an Ethernet cable that has an RJ-45 connector at either end. Figure 2 shows the RJ-45 connector of the Ethernet cable supplied with the device.

Figure 2: RJ-45 Connector on an Ethernet Cable
RJ-45 Connector on
an Ethernet Cable

To connect a device to a network for out-of-band management (see Figure 3):

  1. Connect one end of the Ethernet cable to the management port on the device.
  2. Connect the other end of the Ethernet cable to the management device.
Figure 3: Connect a Device to a Network for Out-of-Band Management
Connect a Device to a Network
for Out-of-Band Management

Connect a Device to a Management Console Using an RJ-45 Connector

You can configure and manage the device by using a dedicated management channel. Each device has a console port which you can connect to using an Ethernet cable with an RJ-45 connector. Use the console port to connect the device to the console server or management console. The console port accepts a cable that has an RJ-45 connector.

Ensure that you have an Ethernet cable that has an RJ-45 connector at either end. One such cable and an RJ-45 to DB-9 serial port adapter are supplied with the device.

Figure 4 shows the RJ-45 connector of the Ethernet cable.

Figure 4: RJ-45 Connector on an Ethernet Cable
RJ-45 Connector on an Ethernet Cable
Note

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 directly to the device, use a combination of the RJ-45 to DB-9 socket adapter supplied with the device and a USB to DB-9 plug adapter. You must provide the USB to DB-9 plug adapter.

To connect the device to a management console (see Figure 5 and Figure 6):

  1. Connect one end of the Ethernet cable to the console port (labeled CON, CONSOLE, or CON1) on the device.
  2. Connect the other end of the Ethernet cable to the console server (see Figure 5) or management console (see Figure 6).
Figure 5: Connect a Device to a Management Console Through a Console Server
Connect a Device to a Management
Console Through a Console Server
Figure 6: Connect a Device Directly to a Management Console
Connect a Device Directly to
a Management Console

Connecting AC Power to a QFX5210

The QFX5210 is shipped from the factory with two power supplies. Each power supply is a hot-removable and hot-insertable field-replaceable unit (FRU) when the second power supply is installed and running. You can install replacement power supplies in the two slots next to the fan modules without powering off the switch or disrupting the switching function.

Ensure that you have a power cord appropriate for your geographical location available to connect AC power to the switch.

Before you begin connecting AC power to the switch:

  • Ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

  • Ensure that you have connected the switch chassis to earth ground.

    Caution

    Before you connect power to the switch, a licensed electrician must attach a cable lug to the grounding and power cables that you supply. A cable with an incorrectly attached lug can damage the switch (for example, by causing a short circuit).

    To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, you must connect the chassis to earth ground before you connect it to power. For installations that require a separate grounding conductor to the chassis, use the protective earthing terminal on the switch chassis to connect to the earth ground. For instructions on connecting earth ground, see Connecting the QFX5210 to Ground. The switch gains additional grounding when you plug the power supply in the switch into a grounded AC power outlet by using the AC power cord appropriate for your geographical location (see QFX5210 AC Power Supply).

  • Install the power supply in the chassis. For instructions on installing a power supply in a QFX5210, see Maintaining QFX5210 Power Supplies.

Note

Each power supply must be connected to a dedicated power source outlet.

To connect AC power to a QFX5210:

  1. Attach the grounding strap to your bare wrist and to a site ESD point.
  2. Ensure that the power supplies are fully inserted in the chassis and the latches are secure. If only one power supply is installed, ensure a that blank cover panel is installed over the second power supply slot.
  3. Locate the power cord or cords shipped with the switch; the cords have plugs appropriate for your geographical location. See AC Power Cord with Type C15 Coupler Specifications.Warning

    Ensure that the power cord does not block access to device components or drape where people can trip on it.

  4. Attach a power cord retainer to each AC power supply. See Figure 7.
    Figure 7: Attaching a Cord Retainer to the AC Power Supply
    Attaching a Cord Retainer to
the AC Power Supply
  5. Thread the coupler end of the power cords through the opening of the cord retainer.
  6. Connect each power supply to the power sources. Insert the coupler end of the power cord into the AC power cord inlet on the AC power supply faceplate.
  7. Push down the power cord retainer to lock the retainer down over the power cord.
    Figure 8: Connecting AC Power
    Connecting AC Power
  8. If the AC power source outlet has a power switch, set it to the OFF (O) position.Note

    The switch powers on as soon as power is provided to the power supply. There is no power switch on the device.

  9. Insert the power cord plug into an AC power source outlet.
  10. If the AC power source outlet has a power switch, set it to the ON (|) position.
  11. Verify that the AC and DC LEDs on each power supply are lit green.

    If the amber fault LED is lit, remove power from the power supply, and replace the power supply (see Removing a Power Supply from a QFX5210). Do not remove the power supply until you have a replacement power supply ready: the power supplies or a blank cover panel must be installed in the switch to ensure proper airflow.

    Caution

    Replace a failed power supply with a blank panel or new power supply within 1 minute of removal to prevent chassis overheating.

Connecting DC Power to a QFX5210

The QFX5210 is shipped from the factory with two power supplies. Each power supply is a hot-removable and hot-insertable field-replaceable unit (FRU) when the second power supply is installed and running. You can install replacement power supplies in the two slots next to the fan modules without powering off the switch or disrupting the switching function.

Warning

A DC-powered QFX5210 is intended for installation only in a restricted access location.

Note

The battery returns of the DC power supply must be connected as an isolated DC return (DC-I).

Before you begin connecting DC power to the switch:

  • Ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

  • Ensure that you have connected the switch chassis to earth ground.

    Caution

    Before you connect power to the switch, a licensed electrician must attach a cable lug to the grounding and power cables that you supply. A cable with an incorrectly attached lug can damage the switch (for example, by causing a short circuit).

    To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, you must connect the chassis to earth ground before you connect it to power. For installations that require a separate grounding conductor to the chassis, use the protective earthing terminal on the switch chassis to connect to the earth ground. For instructions on connecting earth ground, see Connecting the QFX5210 to Ground.

  • Install the power supply in the chassis. For instructions on installing a power supply in a QFX5210, see Installing a Power Supply in a QFX5210.

Ensure that you have the following parts and tools available:

  • DC power source cables (provided)

  • Multimeter (not provided)

To connect DC power to a QFX5210:

  1. Attach the grounding strap to your bare wrist and to a site ESD point.
  2. Verify that the DC power cables are correctly labeled before making connections to the power supply. In a typical power distribution scheme where the return is connected to chassis ground at the battery plant, you can use a multimeter to verify the resistance of the –48V and RTN DC cables to chassis ground:
    • The cable with very low resistance (indicating a closed circuit) to chassis ground is positive (+) and will be installed on the V+ (return) DC power input terminal.

    • The cable with very high resistance (indicating an open circuit) to chassis ground is negative (–) and will be installed on the V– (input) DC power input terminal.

    Caution

    You must ensure that power connections maintain the proper polarity. The power source cables might be labeled (+) and (–) to indicate their polarity. There is no standard color coding for DC power cables. The color coding used by the external DC power source at your site determines the color coding for the leads on the power cables that attach to the DC power input terminals on each power supply.

  3. Ensure that the input circuit breaker is open so that the voltage across the DC power source cable leads is 0 V and that the cable leads do not become active while you are connecting DC power.Note

    The V+ terminals are referred to as +RTN, and V– terminals are referred to as –48 V in DC Power Wiring Sequence Warning and DC Power Electrical Safety Guidelines.

  4. Ensure that the power supplies are fully inserted in the chassis.Warning

    Ensure that the power cables do not block access to device components or drape where people can trip on them.

  5. The QFX5210 is designed to operate with a DC power supply that has a single, non-redundant, feed input. For source redundancy, two DC power supplies must be installed in QFX5210; connect source (A) to one power supply and connect source (B) to the second power supply. This configuration provides the commonly deployed A/B feed redundancy for the system.Caution

    The connection between each power source and power supply must include a circuit breaker.

    Do not connect two sources to a single power supply because doing so can potentially cause circulating current in feed wires whenever there is any difference in the voltage of the two sources.

    Figure 9: DC Power Supply Faceplate for a QFX5210
    DC Power Supply
Faceplate for a QFX5210
      1
    Terminal block
      3
    Fault LED
      2
    Handle
      4
    Ejector lever
    Caution

    The V+ terminals are shunted internally together, as are the V- terminals. The same polarity terminal can be wired together from the same source to provide an additional current path in a higher power chassis. Do not connect the terminals to different sources.

  6. Close the input circuit breaker.Note

    The switch powers on as soon as power is provided to the power supply. There is no power switch on the device.

  7. Verify that the IN and OUT LEDs on the power supply are lit green and are on steadily.