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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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S5720I-28X-PWH-SI-AC

S5720I-28X-PWH-SI-AC

Version Mapping

Table 4-664 lists the mapping between the S5720I-28X-PWH-SI-AC chassis and software versions.

Table 4-664 Version mapping

Series

Model

Software Version
S5720I-SI S5720I-28X-PWH-SI-AC

V200R012C00 and later versions

Appearance and Structure

Figure 4-260 S5720I-28X-PWH-SI-AC appearance
1

AC power input port 1

NOTE:

It must be used with the Phoenix connector, which is included in the installation accessory package.

2

AC power input port 2

NOTE:

It must be used with the Phoenix connector, which is included in the installation accessory package.

3 One console port 4 One PNP button
NOTICE:

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.

5 One USB port 6 Eight PoE++ 10/100/1000BASE-T ports
7 Sixteen PoE+ 10/100/1000BASE-T ports 8 Four 10GE SFP+ ports
9

Monitoring port

NOTE:

It must be used with the Phoenix connector, which is included in the installation accessory package.

The monitoring port detects the status of external devices, for example, monitoring the opening and closing of the cabinet door.

For details about how to use a monitoring port, see "Monitoring Interface Configuration" in the CLI-based Configuration Guide - Device Management Configuration Guide.

10 Ground screw
NOTE:
It is used with a ground 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 4-665 describes the attributes of a 10/100/1000BASE-T Ethernet electrical port.
Table 4-665 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

It supports long-distance interconnection with Huawei cameras. For example, it supports the distance of 200 m at 100 Mbit/s and supports the distance of 250 m at 10 Mbit/s.
  • The supported camera models are M2220-I, M2221-FL, M2221-VL, M2260-I, and M2220-I(8-32mm).
  • If the transmission distance exceeds 100 m, Category 5E or higher Ethernet cables are required.
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 4-666 describes the attributes of a 10GE SFP+ Ethernet optical port.
Table 4-666 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 4-667.
Table 4-667 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 4-261 Indicators on the S5720I-28X-PWH-SI-AC

NOTE:

The S5720I-SI 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. When an S5720I-SI switch is faulty, you can run the command to turn on the fault indicators. Then the SYS indicator and mode indicators fast blink red to help field maintenance personnel quickly find the faulty switch.

Table 4-668 Description of indicators on the switch
No. Indicator Name Color Status Description
1 PWR1 Power module indicator - Off No power module is available in power module slot 1, or the switch has only one power module but the power module does not work normally.
Green Steady on A power module is installed in power module slot 1 and is working normally.
Yellow Steady on

The switch has two power modules installed. Any of the following situations occurs in power module slot 1:

  • A power module is available in this slot but its power switch is in the OFF position.

  • A power module is available in this slot but it is not connected to a power source.

  • The power module in this slot has failed.

2 PWR2 Power module indicator - Off No power module is available in power module slot 2, or the switch has only one power module but the power module does not work normally.
Green Steady on A power module is installed in power module slot 2 and is working normally.
Yellow Steady on

The switch has two power modules installed. Any of the following situations occurs in power module slot 2:

  • A power module is available in this slot but its power switch is in the OFF position.

  • A power module is available in this slot but it is not connected to a power source.

  • The power module in this slot 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 4-669.
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 4-669 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 S5720I-28X-PWH-SI-AC has two built-in power modules for 1+1 power redundancy and does not support pluggable power modules.

The following two PoE power supply modes are available:
  • High-power mode (default): When double power modules are used, they provide 369.6 W PoE power for the eight PoE++ ports and 369.6 W PoE power for the sixteen PoE+ ports (total of 739.2 W PoE power). When either of the two power modules fails, the eight PoE++ ports can supply power for PDs normally; however, the PDs connected to the sixteen PoE+ ports are powered off, and the PoE function is unavailable. When a single power module is used, only the eight PoE++ ports can supply PoE power for PDs.
  • PoE backup mode: You can run the poe-power backup-mode command to manually switch the PoE power supply mode to the backup mode. In backup mode, the entire system provides 369.6 W PoE power regardless of whether a single power module or double power modules are used. That is, all 24 ports share the 369.6 W power. When double power modules are used, they work in 1+1 redundancy mode.
NOTE:

When the power supply mode is manually switched to the PoE backup mode, the PDs connected to all ports are powered off and then powered on again.

When the switch works in PoE backup mode, the PDs connected to all ports are powered off and then powered on again if the switch is restarted.

Table 4-670 lists its power supply configurations.
Table 4-670 Power supply configurations
Power Supply Mode Power Supply Configuration Available PoE Power Maximum Number of Ports (Fully Loaded)
High-power mode Single power module 369.6 W Eight PoE++ ports:
  • 802.3af (15.4 W per port): 8
  • 802.3at (30 W per port): 8
  • 802.3bt (60 W per port): 6
Sixteen PoE+ ports: N/A
Double power modules 739.2 W Eight PoE++ ports:
  • 802.3af (15.4 W per port): 8
  • 802.3at (30 W per port): 8
  • 802.3bt (60 W per port): 6
Sixteen PoE+ ports:
  • 802.3af (15.4 W per port): 16
  • 802.3at (30 W per port): 12
PoE backup mode Single power module 369.6 W Twenty-four ports:
  • 802.3af (15.4 W per port): 24
  • 802.3at (30 W per port): 12
  • 802.3bt (60 W per port): 6 (Only the eight PoE++ ports support this configuration.)
Double power modules
Figure 4-262 shows the power supply mode of dual AC PoE power modules (PWR1 and PWR2). After AC power is transmitted to the PWR modules, the PWR modules provide 12 V and -53 V outputs. The outputs are combined on the motherboard, which then provides 12 V voltage for the switch and -53 V voltage for the PDs.
Figure 4-262 Power supply by dual AC PoE power modules

L: live wire

N: neutral wire

PGND: protection ground

GND: 12 V reference ground

RTN: -53 V reference ground

Heat Dissipation

The S5720I-28X-PWH-SI-AC has four 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 4-671 lists technical specifications of the S5720I-28X-PWH-SI-AC.

Table 4-671 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)

45.94 years

Mean time to repair (MTTR)

2 hours

Availability

> 0.99999

Service port surge protection

±1.5 kV in differential mode, ±6 kV in common mode

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)

6.7 kg (14.77 lb)

Stack ports

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

RTC

Supported

RPS

Not 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)

  • Without PoE: 57.8 W
  • 100% PoE loads: 905 W (system power consumption: 165.8 W, PoE: 739.2 W)
Typical power consumption (30% of traffic load)
  • Tested according to ATIS standard
  • EEE enabled
  • No PoE power consumption

34.6 W

Operating temperature

-40°C to +65°C (-40°F to +149°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.).

Storage temperature

-40°C to +85°C (-40°F to +185°F)

Protection rating

IP20

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

< 47 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 98010797
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Updated: 2019-08-19

Document ID: EDOC1000013597

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