S5720-28X-LI-DC
Version Mapping
Table 4-278 lists the mapping between the S5720-28X-LI-DC chassis and software versions.
Appearance and Structure
1 |
Twenty-four 10/100/1000BASE-T ports |
2 |
Four 10GE SFP+ ports Applicable modules and cables:
NOTE:
A switch can use a maximum of two 10GE optical modules with 40 km or longer transmission distances. If a port uses a GPON optical module, other 10GE SFP+ optical ports cannot be used. |
3 |
One PNP button NOTICE:
Applicable in V200R012C00 and later versions: To restore the factory settings and reset the switch, hold down the button for at least 6 seconds. To reset the switch, press the button. Resetting the switch will cause service interruption. Exercise caution when you press the PNP button. |
4 |
One console port |
5 |
One USB port |
6 |
Ground screw NOTE:
It is used with a ground cable. |
7 |
RPS socket NOTE:
It is used with an RPS cable, which is not hot swappable. |
8 |
DC power terminal NOTE:
It is used together with a DC Power Cable. |
Port Description
10/100/1000BASE-T port
10GE SFP+ port
Console port
USB port
USB flash drives from different vendors differ in model compatibility and drivers. If a USB flash drive cannot be used, try to replace it with another one from a mainstream vendor. Switches support a maximum of 128 GB USB flash drives.
Indicator Description
The S5720-28X-LI-DC has similar indicators to those of the S5720-28X-PWR-LI-AC, except that the S5720-28X-LI-DC does not have a PoE mode indicator. For details, see Indicator Description.
Power Supply Configuration
The S5720-28X-LI-DC has a built-in power module and does not support pluggable power modules. It can connect to an RPS1800 power supply for power redundancy.
Heat Dissipation
The S5720-28X-LI-DC has a built-in fan for forced air cooling. Air flows in from the left side and front panel, and exhausts from the right side.
This figure only shows the airflow direction and does not depict the actual device.
Technical Specifications
Table 4-282 lists technical specifications of the S5720-28X-LI-DC.
Item |
Description |
|---|---|
Memory (RAM) |
512 MB |
Flash |
512 MB in total. To view the available flash memory size, run the display version command. |
Mean time between failures (MTBF) |
45 years |
Mean time to repair (MTTR) |
2 hours |
Availability |
> 0.99999 |
Service port surge protection |
Common mode: ±7 kV |
Power supply surge protection |
±1 kV in differential mode, ±2 kV in common mode |
Dimensions (H x W x D) |
|
Weight (with packaging) |
4 kg (8.82 lb) |
Stack ports |
Twenty-four 10/100/1000BASE-T ports and four 10G SFP+ ports |
RTC |
Not supported |
RPS |
Supported |
PoE |
Not supported |
Rated voltage range |
-48 V DC to -60 V DC |
Maximum voltage range |
-36 V DC to -72 V DC |
Maximum power consumption (100% throughput, full speed of fans) |
31 W |
Typical power consumption (30% of traffic load)
|
19.8 W |
Operating temperature |
0°C to 45°C (32°F to 113°F) at an altitude of 0-1800 m (0-5906 ft.)
NOTE:
When the altitude is 1800-5000 m (5906-16404 ft.), the highest operating temperature reduces by 1°C (1.8°F) every time the altitude increases by 220 m (722 ft.). |
Short-term operating temperature |
-5°C to +55°C (23°F to 131°F) at an altitude of 0-1800 m (0-5906 ft.) NOTE:
When the altitude is 1800-5000 m (5906-16404 ft.), the highest operating temperature reduces by 1°C (1.8°F) every time the altitude increases by 220 m (722 ft.). The equipment can operate beyond the normal operating temperature range for a short-term period, but the following conditions must be met:
The equipment cannot start when the temperature is lower than 0°C (32°F). The maximum distance of optical modules used in these conditions cannot exceed 10 km. |
Storage temperature |
-40°C to +70°C (-40°F to +158°F) |
Noise under normal temperature (27°C, sound power) |
< 47 dB(A) |
Relative humidity |
5% to 95%, noncondensing |
Operating altitude |
0-3000 m (0-9483 ft.) |
Certification |
|
Part number |
98010582 |