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QFX10016 Site Guidelines and Requirements

QFX10000 Environmental Requirements and Specifications

The QFX10008 and QFX10016 modular switches must be installed in a four-post rack. It must be housed in a dry, clean, well-ventilated, and temperature-controlled environment.

Follow these environmental guidelines:

  • The site must be as dust-free as possible, because dust can clog air intake vents and filters, reducing the efficiency of the switch cooling system.

  • Maintain ambient airflow for normal switch operation. If the airflow is blocked or restricted, or if the intake air is too warm, the switch might overheat, leading to the switch temperature monitor shutting down the device to protect the hardware components.

Table 1 provides the required environmental conditions for normal switch operation.

Table 1: QFX10000 Environmental Tolerances

Description

Tolerance

Altitude

No performance degradation to 6562 feet (2000 meters).

Relative humidity

Normal operation ensured in relative humidity range of 5% through 90%, noncondensing.

  • Short-term operation ensured in relative humidity range of 5% through 93%, noncondensing.

    Note:

    As defined in NEBS GR-63-CORE, Issue 3, short-term events can be up to 96 hours in duration but not more than 15 days per year.

Temperature

  • Normal operation ensured in temperature range of 32° F through 104° F (0° C through 40° C).

    Note:

    Ensure the room temperature does not increase or decrease more than 2° C per minute.

  • Nonoperating storage temperature in shipping container: –40° F through 158° F (–40° C through 70° C).

Seismic

Designed to comply with Zone 4 earthquake requirements per NEBS GR-63-CORE, Issue 3.

Note:

Install QFX10008 and QFX10016 modular switches only in restricted areas, such as dedicated equipment rooms and equipment closets, in accordance with Articles 110-16, 110-17, and 110-18 of the National Electrical Code, ANSI/NFPA 70.

General Site Guidelines

Efficient device operation requires proper site planning and maintenance and proper layout of the equipment, rack or cabinet (if used), and wiring closet.

To plan and create an acceptable operating environment for your device and prevent environmentally caused equipment failures:

  • Keep the area around the chassis free from dust and conductive material, such as metal flakes.

  • Follow prescribed airflow guidelines to ensure that the cooling system functions properly and that exhaust from other equipment does not blow into the intake vents of the device.

  • Follow the prescribed electrostatic discharge (ESD) prevention procedures to prevent damaging the equipment. Static discharge can cause components to fail completely or intermittently over time.

  • Install the device in a secure area, so that only authorized personnel can access the device.

Site Electrical Wiring Guidelines

Table 2 describes the factors you must consider while planning the electrical wiring at your site.

Warning:

You must provide a properly grounded and shielded environment and use electrical surge-suppression devices.

Avertissement Vous devez établir un environnement protégé et convenablement mis à la terre et utiliser des dispositifs de parasurtension.

Table 2: Site Electrical Wiring Guidelines

Site Wiring Factor

Guidelines

Signaling limitations

If your site experiences any of the following problems, consult experts in electrical surge suppression and shielding:

  • Improperly installed wires cause radio frequency interference (RFI).

  • Damage from lightning strikes occurs when wires exceed recommended distances or pass between buildings.

  • Electromagnetic pulses (EMPs) caused by lightning damage unshielded conductors and electronic devices.

Radio frequency interference

To reduce or eliminate RFI from your site wiring, do the following:

  • Use a twisted-pair cable with a good distribution of grounding conductors.

  • If you must exceed the recommended distances, use a high-quality twisted-pair cable with one ground conductor for each data signal when applicable.

Electromagnetic compatibility

If your site is susceptible to problems with electromagnetic compatibility (EMC), particularly from lightning or radio transmitters, seek expert advice.

Some of the problems caused by strong sources of electromagnetic interference (EMI) are:

  • Destruction of the signal drivers and receivers in the device

  • Electrical hazards as a result of power surges conducted over the lines into the equipment

QFX10000 Rack Requirements

The QFX10000 modular switch chassis are designed to be installed in four-post racks.

Rack requirements consist of:

  • Rack type

  • Rack mount kit hole spacing

  • Rack size and strength

  • Rack connection to the building structure

Table 3 provides the rack requirements and specifications for the QFX10008 and the QFX10016.

Table 3: Rack Requirements for the QFX10000

Rack Requirement

Guidelines

Rack type: four-post

Use a four-post rack that provides bracket holes or hole patterns spaced at 1 U (1.75 in. or 4.45 cm) increments and that meets the size and strength requirements to support the weight.

A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics Industry Association.

You can stack two QFX10016 or three QFX10008 chassis in a four-post rack if:

  • The rack is 42 U or greater.

  • The rack meets the strength requirements to support the weight.

  • The facility can provide adequate power and cooling.

Rack mount kit hole spacing

The holes in the rack mount kit are spaced at 1 U (1.75 in. or 4.45 cm), so that the switch can be mounted in any rack that provides holes spaced at that distance.

Rack size and strength

  • Ensure that the rack complies with the standards for a 19-in. wide rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the Electronics Industry Association.

  • Use one of the standard rack lengths as defined in the four-part Equipment Engineering (EE); European telecommunications standard for equipment practice (document numbers ETS 300 119-1 through 119-4) published by the European Telecommunications Standards Institute.

    • 23.62 in. (600 mm)

    • 30.0 in. (762 mm)

    • 31.5 in. (800 mm)

  • Ensure that the rack rails are spaced widely enough to accommodate the switch chassis’ external dimensions. The outer edges of the flanges, attached to the chassis, extend the chassis width to 19 in. (48.26 cm).

  • Ensure that the rack is strong enough to support the weight of the switch and cabling.

  • Ensure that the spacing of rails and adjacent racks allows for proper clearance around the switch and rack. .

Rack connection to building structure

  • Secure the rack to the building structure.

  • If earthquakes are a possibility in your geographical area, secure the rack to the floor.

  • Secure the rack to the ceiling as well as wall or floor for maximum stability.

QFX10000 Clearance Requirements for Airflow and Hardware Maintenance

When planning the site for a QFX10008 or QFX10016 installation, you must allow sufficient clearance around the installed chassis for cooling and maintenance (see Figure 1 for QFX10008 and Figure 2 for QFX100016).

Figure 1: Clearance Requirements for Airflow and Hardware Maintenance for a QFX10008 Modular ChassisClearance Requirements for Airflow and Hardware Maintenance for a QFX10008 Modular Chassis
Figure 2: Clearance Requirements for Airflow and Hardware Maintenance for a QFX10016 Modular ChassisClearance Requirements for Airflow and Hardware Maintenance for a QFX10016 Modular Chassis

Follow these guidelines:

  • For the cooling system to function properly, the airflow around the chassis must be unrestricted.

  • If you are mounting a QFX10000 in a rack with other equipment, ensure that the exhaust from other equipment does not blow into the intake vents of the chassis.

  • Leave at least 24 in. (61 cm) both in front of and behind the QFX10000 for service personnel to remove and install hardware components. To be NEBS GR-63 compliant, allow at least 30 in. (76.2 cm) in front of the rack and 24 in. (61 cm) behind the rack.

QFX10016 Chassis Physical Specifications

The QFX10016 modular-chassis is a rigid sheet-metal structure that houses the field-replaceable units (FRUs). You can mount up to two QFX10016 chassis in a standard 19-in. 4-post rack (42 U) rack, provided the rack can handle the combined weight and there is adequate power and cooling. Table 4 summarizes the physical specifications of the chassis. See Figure 3.

Table 4: QFX10016 Physical Specifications

Description

Weight

Height

Width

Depth

Chassis, spare

220 lb (99.79 kg)

36.6 in. (92.96 cm)

17.4 in. (44.2 cm)

Note:

The outer edges of the mounting-bracket flange extend the width to 19 in. (48.3 cm).

35 in. (88.9 cm)

Chassis base AC configuration

Includes 1 Control Board, 5 AC power supplies, 2 fan trays, 2 fan tray controllers, and 5 Switch Interface Boards (SIBs)

522 lb (236.78 kg)

36.6 in. (92.96 cm)

17.4 in. (44.2 cm)

Note:

The outer edges of the mounting-bracket flange extend the width to 19 in. (48.3 cm).

35 in. (88.9 cm)

Chassis redundant AC configuration

Includes 2 Control Boards, 10 AC power supplies, 2 fan trays, 2 fan tray controllers, and 6 SIBs

596 lb (270.34 kg)

36.6 in. (92.96 cm)

17.4 in. (44.2 cm)

Note:

The outer edges of the mounting-bracket flange extend the width to 19 in. (48.3 cm).

35 in. (88.9 cm)

Chassis redundant DC configuration

Includes 2 Control Boards, 10 DC power supplies, 2 fan trays, 2 fan tray controllers, and 6 SIBs

591 lb (268.07 kg)

36.6 in. (92.96 cm)

17.4 in. (44.2 cm)

Note:

The outer edges of the mounting-bracket flange extend the width to 19 in. (48.3 cm).

35 in. (88.9 cm)

QFX10000-30C Line Card

27 lb (12.2 kg)

1.89 in. (4.8 cm)

17.2 in. (43.7 cm)

20.54 in. (52.2 cm)

QFX10000-36Q Line Card

22.6 lb (10.2 kg)

1.89 in. (4.8 cm)

17.2 in. (43.7 cm)

20.54 in. (52.2 cm)

QFX10000-60S-6Q Line Card

21.4 lb (9.7 kg)

1.89 in. (4.8 cm)

17.2 in. (43.7 cm)

20.54 in. (52.2 cm)

QFX10K-12C-DWDM

31 lb (14.06 kg)

1.89 in. (4.8 cm)

17.2 in. (43.7 cm)

20.54 in. (52.2 cm)

Figure 3: Front View of QFX100016Front View of QFX100016
  1
Control Boards
  4
Mounting holes for front panel
  2
Status panel
  5
Line cards
  3
Handles
 
Warning:

The handles on each side of the chassis facilitate the fine-tune positioning of the chassis on the mounting brackets. Do not use the handles to lift the chassis, even when the chassis is empty. See Mounting a QFX10016 in a Four-Post Rack Using a Mechanical Lift for instructions for properly moving a loaded chassis.