8720 Switch Technical Specifications

The SLX 8720 Switch includes the following switch models:

Part number Description

8720-32C

8720-32C Switch with two empty power supply slots, and six empty fan slots. Supports 32x100/40GE

8720-32C-AC-F

8720-32C Switch AC with Front to Back Airflow. Supports 32x100/40GE with dual power supplies, six fans

8720-32C-AC-R

8720-32C Switch AC with Back to Front Airflow. Supports 32x100/40GE with dual power supplies, six fans

8720-32C-DC-F

8720-32C Switch DC with Front to Back Airflow. Supports 32x100/40GE with dual power supplies, six fans

8720-32C-DC-R

8720-32C Switch DC with Back to Front Airflow. Supports 32x100/40GE with dual power supplies, six fans

Weights and Physical Dimensions

Table 1. 8720 Switch Unpackaged Dimensions
8720-32C Switch (all models) Height: 4.34 cm (1.71 in)

Width: 43.96 cm (17.31 in)

Length: 56.97 cm (22.43 in)

XN-FAN-001-F: Fan unit, front-to-back or XN-FAN-001-R: Fan Unit back-to-front

 Height: 4.0 cm (1.57 in)

Width: 4.0 cm (1.57 in)

Length: 13.4 cm (5.28 in)

XN-4P-RKMT298 - Four-post rack mount kit (included with switch)

 Height: 2.1 cm (0.83 in)

Width: 4.4 cm (17.3 in)

Length: 63.0 cm - 90.0 cm (24.80 in - 35.43 in)

XN-2P-RKMT299 - Two-post rack mount kit (separately orderable)

Height: 4.2 cm (1.65 in)

Width: 2.4 cm (0.93 in)

Length: 12.5 cm (4.92 in)
Table 2. 8720 Switch Unpackaged Weight
8720-32C (base with no PSU or fans)

7.37 kg (16.24 lb)
8720-32C switch with two AC PSUs (-F and -R models)

9.7 kg (21.32 lb)
8720-32C switch with two DC PSUs (-F and -R models)

9.72 kg (21.43 lb)

Fan unit, front-to-back or back-to-front

0.14 kg (0.31 lb)

Four-post rack mount kit (included with switch)

2.65 kg (5.84 lb)

Two-post rack mount kit (separately orderable)

0.45 kg (0.99 lb)
Table 3. 8720 Switch Packaged Dimensions
8720-32C Switch (all models) Height: 18.99 cm (7.48 in)

Width: 59.51 cm (23.43 in)

Length: 89.00 cm (35.04 in)

Fan unit, front-to-back or back-to-front

 Height: 24.0 cm (9.45 in)

Width: 20.6 cm (8.11 in)

Length: 22.1 cm (8.70 in)

Four-post rack mount kit (included with switch)

 Height: 6.29 cm (2.48 in)

Width: 10.39 cm (4.09 in)

Length: 22.78 cm (8.97 in)

Two-post rack mount kit (separately orderable)

 Height: 6.29 cm (2.48 in)

Width: 10.39 cm (4.09 in)

Length: 21.79 cm (8.58 in)
Table 4. 8720-32C Switch Packaged Weight
8720-32C (base with no PSUs or fans)

13.61 kg (30.00 lb)
8720-32C switch with two AC PSUs (-F and -R models)

15.83 kg (34.91 lb)
8720-32C switch with two DC PSUs (-F and -R models)

15.90 kg (35.06 lb)

Fan unit, front-to-back or back-to-front

1.82 kg (4.01 lb)

Four-post rack mount kit (included with switch)

2.71 kg (5.97 lb)

Two-post rack mount kit (separately orderable)

0.5 kg (1.11 lb)

Acoustic Specifications

Table 5. Acoustic Specifications
Switch Model Bystander Sound Pressure (at 27°C) Declared Sound Power (at 27°C)

8720-32C-AC-F (8720-32C with front-to-back airflow

45 dB(A)

6.9 bels

8720-32C-AC-R (8720-32C with back-to-front airflow)

52 dB(A)

7.3 bels

8720-32C-DC-F (8720-32C with front-to-back airflow

45 dB(A)

6.9 bels

8720-32C-DC-R (8720-32C with back-to-front airflow)

52 dB(A)

7.3 bels

Fan Tray and Speed Variation

Fan speeds are adjusted based on calculations of the temperatures on all sensors. Due to one fan being located behind the other, air pushed from one fan may cause the other fan in the module to run at a higher speed. One fan can run at medium speed while the other can spin at high speed if one is close to the temperature boundary.

Table 6. Fan Tray and Speed Variation
Description Operation Status Operation Speed Airflow Direction
Tray 1 Fan 1 up high speed Unknown*
Tray 1 Fan 2 up medium speed Unknown*
Tray 2 Fan 1 up high speed Unknown*
Tray 2 Fan 2 up medium speed Unknown*
Tray 3 Fan 1 up high speed Unknown*
Tray 3 Fan 2 up medium speed Unknown*
Tray 4 Fan 1 up high speed Unknown*
Tray 4 Fan 2 up medium speed Unknown*
Tray 5 Fan 1 up high speed Unknown*
Tray 5 Fan 2 up medium speed Unknown*
Tray 6 Fan 1 up high speed Unknown*
Tray 6 Fan 2 up medium speed Unknown*

* - The color of the tab on the fan tray indicates the airflow direction:

Power Options

Table 7. 8720 Switch Power Options
8720 Switch 750 W AC power supply:

Part # XN-ACPWR-750W-F (front-to-back)

Part # XN-ACPWR-750W-R (back-to-front)

AC Input: 100-120/200-240 VAC, 50/60 Hz

3.5/1.8 A max. for each PSU

PSU Input Socket: IEC 320 C14

Power cord input plug: IEC 320 C13
750 W DC power supply:

Part # XN-DCPWR-750W-F (front-to-back)

Part # XN-DCPWR-750W-R (back-to-front)

DC Input: -48 to -60 VDC, 7.5 A max. for each PSU

Power Consumption

Table 8. 8720 Switch Power Consumption
Operating Mode Test Conditions Power Consumption
Fan Duty Traffic Load Port Status Packet Length (Bytes) Dual Power: PSU1 Dual Power: PSU2 Single Power: PSU1

Empty mode

85%

NA

Down

NA

152.6 W

145.5 W

285.9 W

Standby mode

85%

NA

Up

NA

157.6 W

151.5 W

297.2 W

Typical mode

85%

70%

Up

1,518

165 W

159.8 W

313.6 W

Stress mode

100%

100%

Up

256

207.8 W

204.5 W

406.o W

Power and Heat Dissipation

Table 9. 8720 Switch Power and Heat Dissipation
Switch Model Minimum Heat Dissipation (BTU/hr) (Idle, no ports linked) Minimum Power Consumption (Watts) (Idle, no ports linked) Maximum Heat Dissipation (BTU/hr) (Fans high, all ports 100% traffic) Maximum Power Consumption (Watts) (Fans high, all ports 100% traffic)

8720-32C-AC-F

734 BTU/ hr

215W

1573 BTU/ hr

461W

8720-32C-AC-R

734 BTU/ hr

215W

1573 BTU/ hr

461W

8720-32C-DC-F

TBD

215W

 TBD

461W

8720-32C-DC-R

TBD

215W

 TBD

461W

Mean Time Between Failures (MTBF)

Table 10. 8720 Switch Mean Time Between Failures (MTBF)
Switch Model Mean Time Between Failures
8720-32C-AC-F 428,807 hrs @ 25°C
8720-32C-AC-R 476,814 hrs @ 25°C
8720-32C-DC-F 476,813 hrs @ 25°C
8720-32C-DC-R 476,813 hrs @ 25°C

CPU, Memory

Table 11. CPU, Memory
2.2 GHz CPU
16 GB memory, 128 GB SSD
4GB eMMC Flash Memory
32MB buffer for ASIC

Standards

Table 12. Safety Standards

North American Safety of ITE

UL 62368-1, Listed Device (US)

UL 60950-1, Listed Device (US)

CAN/CSA 22.2 #62368-1-14, Canada

CAN/CSA 22.2 #60950-1-07, Canada

Complies with FCC 21 CFR Chapter 1, Sub-chapter J in accordance with FDA & CDRH requirements (US Laser Safety)

CDRH Letter of Approval (US FDA Approval)

European Safety of ITE

EN 62368-1

EN 60950-1

2014/35/EU Low Voltage Directive

International Safety of ITE

CNS 14336-1

AS/NZX 60950-1 (Australia /New Zealand)

GB4943.1

IEC/EN 60825-1, IEC/EN 60825-2 (Lasers Safety)

IEC 62368-1

IEC 60950-1
Table 13. EMI/EMC Standards

North America EMC for ITE
  • FCC 47 CFR part 15 subpart B Class A (USA)
  • ICES-003 (Canada)

European EMC standards
  • EN 300 386 Class A
  • EN 55032 Class A
  • EN 55024
  • EN 55035
  • EN 55011 (Group 1, Class A)
  • EN 61000-6-2
  • EN 61000-6-4
  • EN 61000-3-2 Class A
  • EN 61000-3-3
  • EN 61000-4-2
  • EN 61000-4-3
  • EN 61000-4-4
  • EN 61000-4-5
  • EN 61000-4-6
  • EN 61000-4-8
  • EN 61000-4-11

International EMC certifications
  • IEC 61000-6-2
  • IEC 61000-6-4
  • IEC 61000-4-2
  • IEC 61000-4-3
  • IEC 61000-4-4
  • IEC 61000-4-5
  • IEC 61000-4-6
  • IEC 61000-4-8
  • IEC 61000-4-11
  • CISPER 32 Class A
  • CISPER 24 Class A
  • CISPER 11 Class A
  • AS/NZS CISPER 32 Class A
  • GB/T9254-2008 Class A
  • ANSI C63.4

Country-specific
  • RCM (Australia)
  • VCCI Class A (Japan)
  • MSIP KCC (Korea)
  • BSMI (Taiwan)
  • ANATEL (Brazil)
  • CCC mark (China)
  • UL, FCC (North America)
  • EAC mark (Custom Union)
Table 14. Telecom Standards

EN/ETSI 300 386:2008 (EMC Telecommunications)

EN/ETSI 300 019 (Environmental for Telecommunications)

MEF9 and MEF14 certified for EPL, EVPL, and ELAN
Table 15. IEEE 802.3 Media Access Standards

IEEE 802.3ab 1000BASE-T

IEEE 802.3z 1000BASE-X

IEEE 802.3ae 10GBASE-X

IEEE 802.3ba 40GBASE-X

Environmental Data

Table 16. Environmental Data

Environmental standards

EN/ETSI 300 019-2-1 v2.1.2 (2000 - 2009) - Class 1.2 Storage

EN/ETSI 300 019-2-2 v2.1.2 (1999 - 09) - Class 2.3 Transportation

EN/ETSI 300 019-2-3 v2.1.2 (2003 - 04) - Class 3.1e Operational

EN/ETSI 300 753 (1997-10) - Acoustic Noise

ASTM D3580 Random Vibration Unpackaged 1.5G

Temperature range
  • Front-to-back airflow: 0°C to 50°C (32°F to 122°F) up to 1800m (6000 ft)
  • Front-to-back airflow: 0°C to 45°C (32°F to 113°F) above 1800m (6000 ft)
  • Back-to-front airflow: 0°C to 45°C (32°F to 113°F) up to 1800m (6000 ft)
  • Back-to-front airflow: 0°C to 40°C (32°F to 104°F) above 1800m (6000 ft)

Other operating conditions

Humidity: 5% to 95% relative humidity, non-condensing

Altitude: 0 to 3,000 meters (9,850 feet)

Operational shock (half sine): 30 m/s2 (3 G), 11 ms, 60 shocks

Operational random vibration: 3 to 500 Hz at 1.5 G rms

Storage & transportation conditions (packaged)

Transportation temperature: -40°C to 70°C (-40°F to 158°F)

Humidity: 5% to 95% relative humidity, non-condensing

Packaged shock (half sine): 180 m/s2 (18 G), 6 ms, 600 shocks

Packaged sine vibration: 5 to 62 Hz at velocity 5 mm/s,

62 to 500 Hz at 0.2 G

Packaged random vibration: 5 to 20 Hz at 1.0 ASD w/–3 dB/oct.

from 20 to 200 Hz

14 drops minimum on sides and corners at 42 in (<15 kg box)
9036776-00 Rev. AF