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 S6720S-26Q-LI-24S-AC is an upgraded version of the Huawei S6720S-LI series, offering high performance at a competitive price. Its core advantage lies in its ability to provide stable upgrades for high-bandwidth optical networking in small to medium-sized applications. It features 24 10G optical ports supporting 3000-5000 terminals, 2 40G optical ports supporting high-speed uplinks, a total switching capacity of ≥620Gbps, and a forwarding performance of 216Mpps. The upgraded hardware architecture enhances stability, retaining core enterprise-level functions such as link aggregation, VRRP redundancy, and basic QoS, while removing redundant advanced functions. It incorporates 9KV surge protection and enhanced hardware stability design, resulting in an annual failure rate of <0.02%. This makes it an ideal choice for small and medium-sized enterprises seeking stable upgrades and high-bandwidth optical networking that balances performance, reliability, and cost.
S6720S-26Q-LI-24S-AC FAQ
Q1: What are the core differences between this and the older S6720-26Q-LI-24S-AC model?
A1: The former is an upgraded model with enhanced hardware architecture and stability, improved heat dissipation and anti-interference capabilities; the latter is the basic model with the same core functions but a more cost-effective price. Both are suitable for small to medium-sized optical networking scenarios.
Q2: Will there be a bandwidth bottleneck when 24 ports simultaneously connect to 10G optical equipment + 40G uplink?
A2: No, the total switching capacity is ≥620Gbps, and the forwarding performance reaches 216Mpps. Combined with 40G high-speed uplink and link aggregation, it can easily handle 5000 concurrent terminal transmissions without lag or packet loss.
Q3: Is it necessary for small and medium-sized enterprises to choose the upgraded 10GbE switch?
A3: The upgraded model offers superior stability, reducing the risk of business interruption. The 40G uplink meets high bandwidth requirements, core functions cover daily business operations, and the price is lower than the full-featured model, making it suitable for upgrades seeking "stability + high cost-effectiveness."
S6720S-26Q-LI-24S-AC Appearance
1
Twenty-four 10GE SFP+ ports
Applicable modules and cables:
GE optical module
GE-CWDM optical module
GE-DWDM optical module
GE copper module (100M/1000M auto-sensing)
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 (the last 16 ports are supported, used for zero-configuration stacking, supported in V200R011C10 and later versions)
2
Two 40GE QSFP+ ports
Applicable modules and cables:
QSFP+ optical module
1 m, 3 m, and 5 m QSFP+ to QSFP+ high-speed copper cables
1 m, 3 m, and 5 m QSFP+ to 4*SFP+ high-speed copper cables
10 m QSFP+ to QSFP+ AOC cable
10 m QSFP+ to 4*SFP+ AOC cable
NOTE:
A 40GE QSFP+ optical port can be split into four 10GE 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 ETH management port
5
One console port
6
One USB port
7
Ground screw
NOTE:
It is used with a ground cable.
8
RPS socket
NOTE:
It is used with an RPS cable, which is not hot swappable.
9
Jack for AC power cable locking strap
NOTE:
The AC power cable locking strap is not delivered with the switch.
10
AC socket
NOTE:
It is used with an AC power cable.
S6720S-26Q-LI-24S-AC Port Description
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
40GE QSFP+ port
Attribute
Description
Connector type
MPO/LC
Optical port attributes
Depend on the optical module used
Standards compliance
IEEE802.3ba
Technical specifications of the S6720S-26Q-LI-24S-AC
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)
39.2 years
Mean time to repair (MTTR)
2 hours
Availability
> 0.99999
Service port surge protection
NA
Power supply surge protection
±6 kV in differential mode, ± 6 kV in common mode
Dimensions (H x W x D)
Basic dimensions (excluding the parts protruding from the body): 43.6 mm x 442.0 mm x 225.0 mm (1.72 in. x 17.4 in. x 8.86 in.)
Maximum dimensions (the depth is the distance from ports on the front panel to the parts protruding from the rear panel): 43.6 mm x 442.0 mm x 234.4 mm (1.72 in. x 17.4 in. x 9.23 in.)
Weight (including package)
4.2 kg (9.26 lb)
Stack ports
Any 10GE SFP+ ports (a maximum of 16 physical ports)
Any 40GE QSFP+ ports (a maximum of 2 physical ports)
RTC
Supported
RPS
Supported
PoE
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)
100.2 W
Typical power consumption (30% of traffic load, tested according to ATIS standard)
67.1 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 +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)
< 46.5 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
98010685
Optical Modules Supported by Huawei S Series Switches