Model

S5720-56C-EI-48S-DC

Memory (RAM)

2 GB

Flash

512 MB in total. To view the available flash memory size, run the display version command.

Mean time between failures (MTBF)

73.91 years when no card is configured; 68.42 years when a 2-port 10GE SFP+ interface card is configured; 66.63 years when a 2-port 10GE RJ45 interface card is configured; 66.77 years when a stack card is configured

Mean time to repair (MTTR)

2

Availability

> 0.99999

Service port surge protection

Ports on the 2-port 10GE RJ45 rear interface card: ±2 kV in common mode

Power supply surge protection

Using AC power modules: ±6 kV in differential mode, ±6 kV in common mode

Using DC power modules: ±1 kV in differential mode, ±2 kV in common mode

Dimensions (H x W x D)

Basic dimensions (excluding the parts protruding from the body): 44.4 mm x 442.0 mm x 424.7 mm (1.75 in. x 17.4 in. x 16.72 in.)

Maximum dimensions (the depth is the distance from ports on the front panel to the handle on the rear panel): 44.4 mm x 442.0 mm x 451.8 mm (1.75 in. x 17.4 in. x 17.79 in.)

Weight (with packaging)

9.9 kg (21.83 lb)

Stack ports

Ports on the 2-port 10GE SFP+ rear interface card

Ports on the 2-port 10GE RJ45 rear interface card

Ports on the 2-port QSFP+ rear stack card

RTC

Supported

RPS

Not supported

PoE

Not supported

Rated voltage range

100 V AC to 240 V AC, 50/60 Hz

-48 V DC to -60 V DC

Maximum voltage range

90 V AC to 264 V AC, 47 Hz to 63 Hz

-36 V DC to -72 V DC

Maximum power consumption (100% throughput, full speed of fans)

104 W

Typical power consumption (30% of traffic load)

·         Tested according to ATIS standard

·         EEE enabled

·         No PoE power consumption

68.82 W (without card)

76.55 W (with 2*10GE optical card)

81.23 W (with 2*QSFP+ stack card)

83.78 W (with 2*10GE electrical card)

Operating temperature

0°C to 45°C (32°F to 113°F) at an altitude of 0-1800 m (0-5906 ft.)

Short-term operating temperature

-5°C to +50°C (23°F to 122°F) at an altitude of 0-1800 m (0-5906 ft.)

Storage temperature

-40°C to +70°C (-40°F to +158°F)

Noise under normal temperature (27°C, sound power)

< 51.2 dB(A)

Relative humidity

5% to 95%, noncondensing

Operating altitude

AC power modules configured: 0-5000 m (0-16404 ft.)

DC power modules configured: 0-2000 m (0-6562 ft.)

Certification

EMC certification

Safety certification

Manufacturing certification