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S5700 Series Switches Hardware Description

This document provides an overall description of the S5700 hardware, helping you obtain detailed information about each chassis, card, power module, fan module, cable, and optical module.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
S5720-28X-PWR-LI-AC

S5720-28X-PWR-LI-AC

Version Mapping

Table 4-296 lists the mapping between the S5720-28X-PWR-LI-AC chassis and software versions.

Table 4-296 Version mapping

Series

Model

Software Version
S5720-LI S5720-28X-PWR-LI-AC

V200R010C00 and later versions

Appearance and Structure

Figure 4-113 S5720-28X-PWR-LI-AC appearance
1 Twenty-four PoE+ 10/100/1000BASE-T ports 2 Four 10GE SFP+ ports
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 Jack for AC power cable locking strap
NOTE:
The AC power cable locking strap is not delivered with the switch.
9 AC socket
NOTE:

It is used with an AC power cable.

- -

Port Description

10/100/1000BASE-T port
A 10/100/1000BASE-T Ethernet electrical port sends and receives service data at 10/100/1000 Mbit/s, and must use an Ethernet cable. Table 4-297 describes the attributes of a 10/100/1000BASE-T Ethernet electrical port.
Table 4-297 Attributes of a 10/100/1000BASE-T Ethernet electrical port

Attribute

Description

Connector type

RJ45

Standards compliance

IEEE802.3, IEEE802.3u, IEEE802.3ab

Working mode

10/100/1000 Mbit/s auto-sensing

Maximum transmission distance

100 m

10GE SFP+ port
A 10GE SFP+ Ethernet optical port supports auto-sensing to 1000 Mbit/s. It sends and receives service data at 1000 Mbit/s or 10 Gbit/s. Table 4-298 describes the attributes of a 10GE SFP+ Ethernet optical port.
Table 4-298 Attributes of a 10GE SFP+ port

Attribute

Description

Connector type

LC/PC

Optical port attributes

Depend on the optical module used

Standards compliance

IEEE802.3ae

Working mode

GE/10GE auto-sensing

Console port
The console port is connected to a console for on-site configuration. The port must use a console cable. The console port is used when a switch is powered on for the first time. For details about the attributes of a console port, see Table 4-299.
Table 4-299 Attributes of a console port

Attribute

Description

Connector type

RJ45

Standards compliance

RS-232

Working mode

Duplex Universal Asynchronous Receiver/Transmitter (UART)

Baud rate

9600 bit/s, 19200 bit/s, 38400 bit/s, 57600 bit/s, or 115200 bit/s

Default value: 9600 bit/s

USB port
The USB port can have a USB flash drive connected to upgrade the switch, or transfer configuration files or other files. The USB port can only connect to a USB flash drive that complies with USB 2.0.
NOTE:
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

NOTE:
Hold down the mode switch button for 6s and release it to start the web initial login mode. Either of the following situations will occur:
  • If the switch has no configuration file, the system attempts to enter the web initial login mode. In this mode, the status of mode indicators is as follows:
    • If the system enters the web initial login mode successfully, all mode indicators turn green and stay on for a maximum of 10 minutes.
    • If the system fails to enter the initial login mode, all mode indicators fast blink for 10 seconds and then restore to the default status.
  • If the switch has a configuration file, the system cannot enter the web initial login mode. In this case, all mode indicators fast blink for 10s, and then return to the default states.
Figure 4-114 Indicators on the S5720-28X-PWR-LI-AC

NOTE:

The S5720-LI series switches provide a command for setting fault indicators, which help field maintenance personnel find a faulty switch quickly.

The SYS indicator and mode indicators (STAT, SPED, STCK, and PoE) are used as fault indicators of a switch. If the switch fails, its SYS indicator and mode indicators can be configured to blink red fast so that field maintenance personnel can find this faulty switch.

Table 4-300 Description of indicators on the switch
No. Indicator Name Color Status Description
1 PWR Power module indicator - Off The switch is powered off.
Green Steady on The system power supply is normal.
Yellow Steady on
  • The built-in power module has failed, and the switch is receiving power from a redundant power supply (RPS).
  • The built-in PoE power module has failed.
2 RPS RPS indicator - Off The switch is not connected to an RPS.
Green Steady on The RPS is in cold standby state.
Green Blinking The RPS is supplying power to another switch.
Yellow Blinking The RPS is supplying power to the local switch, and the built-in power module of the switch has failed.
3 SYS System status indicator - Off The system is not running.
Green Fast blinking The system is starting.
Green Slow blinking The system is running normally.
Red Steady on The system does not work normally after registration, or a fan alarm or temperature alarm has been generated.
4 STAT Status indicator - Off The status mode is not selected.
Green Steady on The status mode (default mode) is selected. If the status mode is selected, the service port indicator shows the port link or activity state.
5 SPED Speed indicator - Off The speed mode is not selected.
Green Steady on The service port indicators show the port speeds. After 45 seconds, the service port indicators automatically restore to the status mode.
6 STCK Stack indicator - Off
  • If you are not changing the indicator mode (default): The switch is in stack standby or slave state or the stacking function is not enabled on the switch.
  • If you are changing the indicator mode: The stack mode is not selected.
Green Steady on The switch is a standby or slave switch in a stack, and the service port indicators show the stack ID of the switch.
Green Blinking
  • If you are not changing the indicator mode (default): The switch is a stack master switch or a standalone switch with the stacking function enabled.
  • If you are changing the indicator mode: The switch is the master switch in a stack or a standalone switch, and the service port indicators show the stack ID of the master switch.
After 45 seconds, the service port indicators automatically restore to the status mode.
7 PoE PoE indicator - Off The PoE mode is not selected.
Green Steady on The service port indicators show the PoE status. After 45 seconds, the service port indicators automatically restore to the status mode.
8 MODE Mode switch button - -
  • When you press this button once, the service port indicators change to the speed mode and show the speed of each service port
  • When you press this button a second time, the service port indicators change to the stack mode and show the stack ID of the local switch.
  • When you press this button a third time, the service port indicators change to the PoE mode and show the PoE status of each service port.
  • When you press this button a fourth time, the service port indicators restore to the default mode, and the STAT indicator turns green.

If you do not press the MODE button within 45 seconds, the service port indicators restore to the default mode. In this case, the STAT indicator is steady green, the SPED and PoE indicators are off, and the STCK indicator is off or blinking green.

9 - Service port indicator

Meanings of service port indicators vary in different modes. For details, see Table 4-301.

10 - USB-based deployment indicator - Off
  • No USB flash drive is connected to the switch.
  • The USB port is damaged.
  • The indicator is damaged.
  • The USB flash drive does not have any configuration file and cannot be used for deployment.
  • The switch has been upgraded using the USB flash drive and is restarting.
Green Steady on A USB-based deployment has been completed.
Green Blinking The system is reading data from the USB flash drive.
Yellow Steady on The switch has copied all the required files and completed the file check. The USB flash drive can be removed from the switch.
Red Blinking An error has occurred when the system is executing the configuration file or reading data from the USB flash drive.
Table 4-301 Description of service port indicators in different modes (one indicator for each port)
Display Mode Color Status Description
Status - Off The port is not connected or has been shut down.
Green Steady on A link has been established on the port.
Green Blinking The port is sending or receiving data.
Speed - Off The port is not connected or has been shut down.
Green Steady on

10M/100M/1000M port: The port is operating at 10/100 Mbit/s.

1000M/10GE port: The port is operating at 1000 Mbit/s.

Green Blinking

10M/100M/1000M port: The port is operating at 1000 Mbit/s.

1000M/10GE port: The port is operating at 10 Gbit/s.

PoE - Off The port is not providing power to a powered device (PD).
Green Steady on The port is providing power to a PD.
Yellow Steady on The PoE function is disabled on the port.
Yellow Blinking The port stops providing PoE power because of an exception (for example, an incompatible PD is connected to the port).
Green and yellow Blinking green and yellow alternately The port fails to supply power to a PD due to one of the following reasons:
  • The power required by the connected PD exceeds the maximum power or the configured power threshold of the port.
  • The total power consumption of PDs has reached the maximum power of the switch.
  • The manual power management mode is used and the port is not enabled to provide power to the PD.
Stack - Off Port indicators do not show the stack ID of the switch.
Green Steady on
The switch is not the master switch in a stack.
  • If the indicator of a port is steady on, the number of this port is the stack ID of the switch.

  • If the indicators of ports 1 to 9 are steady on, the stack ID of the switch is 0.

Green Blinking
The switch is the master switch in a stack.
  • If the indicator of a port is blinking, the number of this port is the stack ID of the switch.

  • If the indicators of ports 1 to 9 are blinking, the stack ID of the switch is 0.

Power Supply Configuration

The S5720-28X-PWR-LI-AC has a built-in power module and does not support pluggable power modules. The built-in power module can provide 370 W PoE power, which ensures full PoE power on 24 ports in compliance with 802.3af or on 12 ports in compliance with 802.3at. The switch can connect to an RPS1800 power supply. The RPS1800 only provides system power redundancy and does not increase the PoE capacity of the switch.

Figure 4-115 shows the power supply mode of a built-in AC PoE power module (PWR). The PWR module receives AC power from an external power source and provides two outputs: 12 V and -53 V. The 12 V output is provided for the chassis, and the -53 V output is provided for PDs.
Figure 4-115 Power supply by a built-in AC PoE power module

L: live wire

N: neutral wire

PGND: protection ground

GND: 12 V reference ground

RTN: -53 V reference ground

Heat Dissipation

The S5720-28X-PWR-LI-AC has two built-in fans for forced air cooling. The airflow direction is left-to-right.

NOTE:
This figure only shows the airflow direction and does not depict the actual device.

Technical Specifications

Table 4-302 lists technical specifications of the S5720-28X-PWR-LI-AC.

Table 4-302 Technical specifications

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)

41 years

Mean time to repair (MTTR)

2 hours

Availability

> 0.99999

Service port surge protection

Common mode: ±7 kV

Power supply surge protection

±6 kV in differential mode, ±6 kV in common mode

Dimensions (H x W x D)

43.6 mm x 442.0 mm x 310.0 mm (1.72 in. x 17.4 in. x 12.2 in.)

Weight (with packaging)

5.2 kg (11.45 lb)

Stack ports

Twenty-four 10/100/1000BASE-T ports and four 10G SFP+ ports

RTC

Not supported

RPS

Supported

PoE

Supported

Rated voltage range

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

Maximum voltage range

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

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

  • Not providing the PoE function: 42.7 W
  • 100% PoE loads: 448.5 W (system power consumption: 78.9 W, PoE: 369.6 W)
Typical power consumption (30% of traffic load)
  • Tested according to ATIS standard
  • EEE enabled
  • No PoE power consumption

29.5 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 operates at a temperature of over 45°C (113°F) consecutively for at most 96 hours in one year.
  • The equipment operates at a temperature of over 45°C (113°F) for a total of no more than 360 hours in one year.
  • The equipment operates at a temperature of over 45°C (113°F) for no more in 15 times in one year.
The equipment may be damaged or experience unexpected exceptions if any of the preceding limits is exceeded.

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)

< 49.1 dB(A)

Relative humidity

5% to 95%, noncondensing

Operating altitude

0-5000 m (0-16404 ft.)

Certification

  • EMC certification
  • Safety certification
  • Manufacturing certification

Part number

98010593
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Updated: 2019-08-19

Document ID: EDOC1000013597

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