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.


S2700 Series Switches Hardware Description

This document provides an overall description of the S2700 hardware, helping you obtain detailed information about each chassis, 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 4-36 lists the mapping between the S2700-26TP-EI-DC chassis and software versions.

Table 4-36 Version mapping



Software Version
S2700-EI S2700-26TP-EI-DC

V100R005C01 to V100R006C05

Appearance and Structure

Figure 4-19 S2700-26TP-EI-DC appearance
1 Ground screw
It is used with Ground cable.
2 DC power terminal

It is used with DC Power Cable.

3 Power switch 4 Twenty-four 10/100BASE-TX ports
5 Two combo ports (10/100/1000BASE-T + 100/1000BASE-X)
Modules applicable to combo optical ports:
6 One console port

Port Description

10/100BASE-TX port
A 10/100BASE-TX Ethernet electrical port sends and receives service data at 10/100 Mbit/s, and must use an Ethernet cable. Table 4-37 lists the attributes of a 10/100BASE-TX Ethernet electrical port.
Table 4-37 Attributes of a 10/100BASE-TX Ethernet electrical port



Connector type


Standards compliance

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

Electrical port attributes


  • A medium dependent interface (MDI) provides the physical and electrical connection to the cabling medium. Ethernet ports of most NICs are MDIs.
  • A medium dependent interface crossover (MDIX) enables connection between like devices. MDIX ports are usually used on hubs or LAN switches.

Working mode

10/100 Mbit/s auto-sensing

Maximum transmission distance

100 m

Combo port
A combo port consists of an optical Ethernet port and an electrical Ethernet port on the panel. Each combo port matches only one internal forwarding port. The electrical and optical ports of a combo port are multiplexed, and only one of them can work at a time. When one of the Ethernet ports is working, the other port is shut down.

By default, a combo port works in auto mode, in which the port type is determined as follows:

  • If the optical port has no optical module installed and the electrical port has no Ethernet cable connected, the port type depends on which port is connected first. If the electrical port is connected by an Ethernet cable first, the electrical port is used for data switching. If the optical port has an optical module installed first, the optical port is used for data switching.
  • If the electrical port has an Ethernet cable connected and is in Up state, the electrical port is still used for data switching when the optical port has an optical module installed.
  • If the optical port, no matter in Up or Down state, has an optical module installed, the optical port is still used for data switching when the electrical port has an Ethernet cable connected.
  • If the optical port has an optical module installed and the electrical port has an Ethernet cable connected, the optical port is used for data switching after the switch restarts.
You can configure a combo port as an electrical or optical port using the combo-port command.
Console port
The console port of a switch can connect to an operation terminal for onsite configuration. The port must use Console Cable. To configure a switch after the first power-on, log in to the switch through the console port. Table 4-38 lists attributes of a console port.
Table 4-38 Attributes of a console port



Connector type


Standards compliance


Working mode

Full-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

Indicator Description

The S2700-26TP-EI-DC has the same types of indicators as the S2700-52P-EI-AC. For details, see Indicator Description.

Power Supply Configuration

The S2700-26TP-EI-DC has a built-in power module and does not support pluggable power modules.

Figure 4-20 shows the power supply mode of a single DC power module. The built-in DC power module (PWR) receives DC power from an external power source and provides a 12 V output to the chassis.
Figure 4-20 Power supply by a single DC power module

NEG: negative cable

RTN: positive cable

GND: 12 V reference ground

Heat Dissipation

The S2700-26TP-EI-DC has no fans and uses natural heat dissipation.

Technical Specifications

Table 4-39 lists technical specifications of the S2700-26TP-EI-DC.

Table 4-39 Technical specifications



Memory (RAM)

64 MB


16 MB

Mean time between failures (MTBF)

37.3 years

Mean time to repair (MTTR)

2 hours


> 0.99999

Service port surge protection

Common mode: ±6 kV

Power supply surge protection

±1 kV in differential mode, ±2 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.)


≤ 3.5 kg (7.72 lb)

Stack ports

Not supported


Not supported


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)

15.5 W

Operating temperature

-5°C to +50°C (23°F to 122°F)

The operating temperature of the switch is -5°C to +45°C (23°F to 113°F) when it uses SFP optical modules with 80 km or longer transmission distances.

Storage temperature

-40°C to +70°C (-40°F to +158°F)

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

Noise-free (no fans)

Relative humidity

5% to 95%, noncondensing

Operating altitude

0-2000 m (0-6562 ft.)


  • EMC certification
  • Safety certification
  • Manufacturing certification

Part number

Updated: 2019-08-19

Document ID: EDOC1000027458

Views: 60125

Downloads: 1383

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Previous Next