No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search


To have a better experience, please upgrade your IE browser.


S6700 Series Switches Hardware Description

This document provides an overall description of the S6700 hardware, helping you obtain detailed information about each chassis, power module, fan module, cable, and optical module.

Rate and give feedback:
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).


Version Mapping

Table 5-40 lists the mapping between the S6720S-32X-LI-32S-AC chassis and software versions.

Table 5-40 Version mapping



Software Version
S6720S-LI S6720S-32X-LI-32S-AC

V200R011C00 and later versions

Appearance and Structure

Figure 5-19 S6720S-32X-LI-32S-AC appearance
1 Thirty-two 10GE SFP+ ports 2 One PNP button

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.

3 One ETH management port 4 One console port
5 One USB port 6 Ground screw
It is used with a ground cable.
7 RPS socket

It is used with an RPS cable, which is not hot swappable.

8 Jack for AC power cable locking strap
The AC power cable locking strap is not delivered with the switch.
9 AC socket

It is used with an AC power cable.

- -

Port Description

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 5-41 describes the attributes of a 10GE SFP+ Ethernet optical port.
Table 5-41 Attributes of a 10GE SFP+ port



Connector type


Optical port attributes

Depend on the optical module used

Standards compliance


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 5-42.
Table 5-42 Attributes of a console port



Connector type


Standards compliance


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

ETH management port
You can connect a switch to a configuration terminal or network management workstation through the ETH management port to configure the switch locally or remotely. The port must use an Ethernet cable. You can choose to download the software package through the ETH management port in the BootLoad menu. File transfer through the ETH management port is faster than transfer through the console port. Table 5-43 describes the attributes of an ETH management port.
Table 5-43 Attributes of an ETH management port



Connector type


Standards compliance


Working mode

10/100 Mbit/s auto-sensing

Maximum transmission distance

100 m

In V200R012C00 and later versions, you can log in to the switch that contains the ETH management port for the first time through the ETH port. For details, see "First Login to a Switch" in the Configuration Guide - Basic Configuration. If you have logged in to the device for the first time by pressing and holding the MODE button for 6 seconds or longer and saved the configuration, the default configuration on the ETH port will be cleared. In this case, you cannot log in to the switch for the first time through the ETH port. You are advised to log in to the switch for the first time through the ETH port.
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.

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 S6720S-32X-LI-32S-AC has similar indicators to those of the S6720-26Q-LI-24S-AC, except that the S6720S-32X-LI-32S-AC has no 40GE port indicators. For details, see Indicator Description.

Power Supply Configuration

The S6720S-32X-LI-32S-AC has a built-in power module and does not support pluggable power modules. It can connect to an RPS1800 power supply for power redundancy.

Figure 5-20 shows the power supply mode of a built-in AC power module. The built-in AC power module (PWR) receives power from an external power source and provides a 12 V output to the chassis.
Figure 5-20 Power supply mode of a built-in AC power module

L: live wire

N: neutral wire

PGND: protection ground wire

GND: 12 V reference ground

Heat Dissipation

The S6720S-32X-LI-32S-AC has three built-in fans 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 5-44 lists technical specifications of the S6720S-32X-LI-32S-AC.

Table 5-44 Technical specifications



Memory (RAM)

1 GB


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

Mean time between failures (MTBF)

42.8 years

Mean time to repair (MTTR)

2 hours


> 0.99999

Service port surge protection


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 220.0 mm (1.72 in. x 17.4 in. x 8.7 in.)

Weight (including package)

4.3 kg (9.48 lb)

Stack ports

Any 10GE SFP+ ports (a maximum of 16 physical ports)






Not 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)

108.5 W

Typical power consumption (30% of traffic load, tested according to ATIS standard)

71.8 W

Operating temperature

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

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


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)

< 46.4 dB(A)

Relative humidity

5% to 95%, noncondensing

Operating altitude

0-5000 m (0-16404 ft.)


  • EMC certification
  • Safety certification
  • Manufacturing certification
Part number 98010694
Updated: 2020-02-17

Document ID: EDOC1000013621

Views: 199440

Downloads: 3812

Average rating:
This Document Applies to these Products

Related Version

Related Documents

Previous Next