5.1 Specifications
lists specifications of the S1720 series switches.
Table 5-1
Specifications of the S1720 series switches
Item
Description
DDR memory
256 MB
Flash storage
200 MB
Mean time between
failures (MTBF)
l
S1720-20GFR-4TP: 67 years
l
S1720-28GFR-4TP: 65.66 years
Mean time to repair
(MTTR)
2 hours
Availability
> 0.99999
Surge
protecti
on
Service
port
protectio
n
Common mode: ±7 kV
Power
supply
protectio
n
±6 kV in differential mode and ±6 kV in common mode
Dimensions (W x D
x H)
442.0 mm x 220.0 mm x 43.6 mm
Weight
≤
5 kg
AC
input
voltage
Rated
voltage
range
100 V AC to 240 V AC, 50/60 Hz
Maximu
m
voltage
range
90 V AC to 264 V AC, 47 Hz to 63 Hz
Maximum power
consumption
l
S1720-20GFR-4TP: 20.7 W
l
S1720-28GFR-4TP: 24.3 W
Temper
ature
Operatin
g
temperat
ure
0°C-45°C (at altitude of 0-1800 m)
NOTE
When the altitude is between 1800 m and 5000 m, the operating temperature
reduces by 1°C every time the altitude increases by 220 m.
S1720 Series Ethernet Switches
Product Description
5 Technical Specifications
Issue 01 (2014-07-20)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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