The S series fixed Ethernet switches integrate the access and transmission functions to provide reliable access/aggregation and high-quality transmission of services on enterprise networks. The switches are built on an integrated hardware platform, and their hardware system consists of the chassis, power module, fan module, extended cards, and Switch Control Unit (SCU).
The S series fixed Ethernet switches are available in a variety of models for you to choose based on your network requirements.
S6700 Series Switches Characteristics The S6700 series Ethernet switches are next-generation 10G fixed switches. The S6700 can function as a core switch on a campus network. The S6700 has industry-leading performance and provides line-speed 10GE access ports and line-speed 40GE even 100GE uplink ports. It can function as a core switch on a campus network to provide 40 Gbit/s even 100 Gbit/s traffic aggregation.
The Huawei S6720-32C-SI-DC is a compact 10 Gigabit Ethernet switch in the Huawei S6720 series, powered by DC. Its core advantage is its compact DC-powered networking for small and medium-sized IDC/industrial scenarios—a hybrid configuration of 24 Gigabit Ethernet ports + 4 10 Gigabit optical ports + 4 Gigabit optical ports, adaptable to 2000-3000 terminals; DC input voltage supports a wide range of -48V to -60V, suitable for data center/industrial DC power supply systems, with a total switching capacity of ≥336Gbps and forwarding performance of up to 126Mpps; its compact design saves rack space, supports enterprise-level functions such as link aggregation, VRRP, and basic QoS, and features built-in 9KV surge protection and industrial-grade stability design, with an annual failure rate of <0.03%. It is the preferred choice for small and medium-sized IDCs, industrial data centers, and space-constrained scenarios that balance power supply adaptability, bandwidth, and deployment flexibility.
S6720-32C-SI-DC FAQ
Q1: What are the core advantages of DC power supply compared to AC power supply in IDC scenarios?
A1: DC power supply is directly compatible with IDC centralized DC power supply systems, eliminating the need for additional power conversion modules. It offers high power efficiency, low failure rate, and reduced electromagnetic interference, meeting the high stability requirements of data centers.
Q2: Will there be a bandwidth bottleneck when 24 ports simultaneously connect to gigabit devices + 4×10G uplinks?
A2: No. The total switching capacity is ≥336Gbps, with a forwarding performance of 126Mpps, easily handling concurrent transmission from 3000 terminals. The 10G uplink provides ample bandwidth to meet the needs of IDC data interaction and industrial control signal transmission.
Q3: Does the compact design affect device heat dissipation and long-term stability?
A3: No. Huawei has optimized the industrial-grade heat dissipation structure. The compact chassis still supports 24/7 continuous operation. Combined with 9KV surge protection and overvoltage/overcurrent protection, it is suitable for complex data center/industrial environments, ensuring stability and reliability.
10GE SFP+ optical module (OSXD22N00 not supported)
10GE-CWDM optical module
10GE-DWDM optical module
1 m, 3 m, 5 m, and 10 m SFP+ high-speed copper cables
3 m and 10 m SFP+ AOC cables
0.5 m and 1.5 m SFP+ dedicated stack copper cables (used for zero-configuration stacking, supported in V200R011C10 and later versions)
NOTE:
The four 10GE SFP+ ports on the front panel cannot be used simultaneously with ports on the rear card (except the 4-port 10GE rear card).
If a rear card other than a 4-port 10GE rear card is installed in the switch, only the ports on the front panel can be used by default.
V200R011 version: To use the port on the rear card, run the set device port-on-card enable command. Then the four 10GE SFP+ ports on the front panel cannot be used.
V200R012 and later versions: To use the port on the rear card, run the undo set device port-config-mode port-on-board enable command. Then the four 10GE SFP+ ports on the front panel 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 ETH management port
6
One USB port
7
Ground screw
NOTE:
It is used with a ground cable.
8
ESN label
NOTE:
You can draw it out to view the ESN and MAC address of the switch.
9
Rear card slot
NOTE:
Cards supported:
ES5D21Q02Q00
ES5D21X04S01
10
Fan slot
NOTE:
Applicable fan module:
FAN-060B-B (Fan Box (B, Fan Panel Side Exhaust))
11
Power module slot 2
NOTE:
Applicable power modules:
150 W AC power module
150 W DC power module
12
Power module slot 1
NOTE:
Applicable power modules:
150 W AC power module
150 W DC power module
S6720-32C-SI-DCPort Description
100M/1000M/2.5GE/5GE/10GE BASE-T port (MultiGE 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 4-68 describes the attributes of a 10GE SFP+ Ethernet optical 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
Technical specifications of the S6720-32C-SI-D
Item
Description
Memory (RAM)
1 GB
Flash
512 MB in total. To view the available flash memory size, run the display version command.
Mean time between failures (MTBF)
27.4 years
Mean time to repair (MTTR)
2 hours
Availability
> 0.99999
Service port surge protection
Common mode: ±7 kV
Power supply surge protection
Using AC power modules: ±6 kV in differential mode, ±6 kV in common mode
Using DC power modules: ±1 kV in differential mode, ±2 kV in common mode
Dimensions (H x W x D)
Basic dimensions (excluding the parts protruding from the body): 44.4 mm x 442.0 mm x 425.0 mm (1.75 in. x 17.4 in. x 16.73 in.)
Maximum dimensions (the depth is the distance from ports on the front panel to the handle on the rear panel): 44.4 mm x 442.0 mm x 451.3 mm (1.75 in. x 17.4 in. x 17.77 in.)
Weight (including package)
8.7 kg (19.18 lb)
Stack ports
Any MultiGE, 10GE SFP+, or 40GE QSFP+ ports (a maximum of 16 physical ports)
RTC
Supported
RPS
Not supported
PoE
Not supported
Rated voltage range
100 V AC to 240 V AC, 50/60 Hz
-48 V DC to -60 V DC
Maximum voltage range
90 V AC to 264 V AC, 47 Hz to 63 Hz
-36 V DC to -72 V DC
Maximum power consumption (100% throughput, full speed of fans)
117.62 W (without card)
Typical power consumption (30% of traffic load, tested according to ATIS standard)
93 W (without card)
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 +50°C (23°F to 122°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)
< 62.3 dB(A)
Relative humidity
5% to 95%, noncondensing
Operating altitude
AC power modules configured: 0-5000 m (0-16404 ft.)
DC power modules configured: 0-2000 m (0-6562 ft.)
Certification
EMC certification
Safety certification
Manufacturing certification
Part number
98010716
Optical Modules Supported by Huawei S Series Switches