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SRX4600 Site Guidelines and Requirements

SRX4600 Firewall Environmental Specifications

Table 1 specifies the environmental specifications required for normal Firewall operation. In addition, the site should be as dust-free as possible.

Table 1: Firewall Environmental Specifications




No performance degradation to 6,562 ft (2000 m)

Relative humidity

Normal operation ensured in relative humidity range of 5% through 90%, non-condensing


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

Non-operating storage temperature in shipping crate: –40°F (–40°C) through 158°F (70°C)


Tested to meet Telcordia Technologies Zone 4 earthquake requirements


Install the firewall only in restricted-access 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. It also requires proper layout of the equipment, rack or cabinet, 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. Ensure 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.


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


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.

Strong sources of electromagnetic interference (EMI) can cause:

  • 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.

Clearance Requirements for Airflow and Hardware Maintenance for SRX4600 Firewalls

When planning the installation site, you need to allow sufficient clearance around the firewall. Consider the following requirements:

  • For the cooling system to function properly, the airflow around the chassis must be unrestricted. See Figure 1.

    Figure 1: Clearance Requirements for Airflow and Hardware Maintenance for an SRX4600 Firewall ChassisClearance Requirements for Airflow and Hardware Maintenance for an SRX4600 Firewall Chassis
  • If you are mounting the firewall on a rack or cabinet along with other equipment, ensure that the exhaust from other equipment does not blow into the intake vents of the chassis.

  • For service personnel to remove and install hardware components, there must be adequate space at the front and back of the firewall as indicated in Table 3.

Table 3 provides information about the clearance requirements for maintaining optimum airflow and the distances necessary to facilitate easy maintenance of the firewall.

Table 3: Clearance Requirements for the SRX4600 Firewall


Recommended Clearance

Requirement for Clearance

Front of the chassis

24.00 in. (60.90 cm)

Space for service personnel to remove and install hardware components

Rear of the chassis

24.00 in. (60.90 cm)

Space for service personnel to remove and install hardware components

Between front-mounting flange and rack or cabinet edge

2.50 in. (6.35 cm)

Space for cable management and organization

Between both sides of the chassis and any non-heat-producing surface such as a wall or cabinet side

6.00 in. (15.24 cm)

Space for the cooling system to function properly and to maintain unrestricted airflow around the chassis