S3700 Series Enterprise Switches - Huawei Products
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S3700 Series Enterprise Switches

For Fast Ethernet switching over twisted-pair copper, Huawei's S3700 Series combines proven reliability with robust routing, security, and management features in a compact, energy-efficient switch.

Easily configurable high-density, energy-efficient 100 Mbit/s downstream ports - up to 48 ports per switch, plus 2 dual-purpose SFP uplink ports. Power-over-Ethernet (PoE) connectors and small form-factor SFP uplink ports for flexibility in configuring power options, and managing performance and scalability. Advanced VPN and VLAN support for secure access at the application, device, and user levels. Compatible with Huawei's intelligent iStack virtualization technology and eSight NMS for scalability and manageability in small to very large-scale and distributed networks.

Choose Standard (SI) models for L2 and basic L3 switching; Enhanced (EI) models support IP multicasting and more complex routing protocols (OSPF, IS-IS, BGP).


  • S3700-02-Front_looking-down
  • S3700-03-Front_left-30°down-15°
  • S3700-04-Front_right-30°down-15°
  • S3700-08-Rear_looking-down
  • S370001-Front

Choose Huawei S3700 Enterprise Switches for resilient 100 Mbit/s Fast Ethernet L3 switching in large data centers, or as core switches in small to medium-sized enterprise campus IT environments.

Typical Deployment Scenarios

S3700 Switches in Small to Medium-sized Enterprise Networks as Core Switches

S3700 Switches Used as L3 Access Switches in a Large-scale Data Center

Highlights – Features and Benefits

Energy-efficient Fast Ethernet switches designed for resilience, scalability, and manageability.

Powerful Support for Services

The Multi-VPN-Instance CE (MCE) function isolates users in different VLANs on a device, ensuring data security and reducing costs.

S3700 EI models support multicast functions such as IGMP snooping, IGMP filter, fast leave, and IGMP proxy.

PoE Function

The S3700 PWR offers an improved Power over Ethernet (PoE) function, configurable to determine when or whether a PoE port provides power.

Comprehensive QoS Policies and Security Mechanisms

The S3700 classifies complex traffic based on packet information, such as the 5-tuple, IP preference, ToS, DSCP, IP protocol type, ICMP type, TCP source port, VLAN ID, Ethernet protocol type, and CoS. The S3700 supports a flow-based, two-rate, three-color Committed Access Rate (CAR).

Multiple security measures defend against Denial of Service (DoS) attacks, as well as attacks against networks or individual users: SYN Flood attacks, Land attacks, Smurf attacks, and ICMP Flood attacks.

DHCP snooping generates user binding entries based on users’ access interfaces, MAC addresses, IP addresses, IP address leases, and VLAN IDs.

Strict ARP learning prevents ARP spoofing attacks that exhaust ARP entries. The S3700 also provides IP source guard to prevent DoS attacks caused by MAC address spoofing, IP address spoofing, and MAC/IP spoofing.

The S3700 supports centralized MAC address authentication and 802.1x authentication. It authenticates users based on statically or dynamically bound user information, such as the user name, IP address, MAC address, VLAN ID, access interface, and flag, indicating whether antivirus software is installed. VLANs, QoS policies, and Access Control Lists (ACLs) can be dynamically applied to users.

The S3700 can limit the number of MAC addresses learned on an interface to prevent attackers from exhausting MAC address entries by using bogus source MAC addresses. This function minimizes the packet flooding that occurs when users' MAC addresses cannot be found in the MAC address table.

Various Routing and IPv6 Features

The S3700 supports various routing protocols, including static routing, RIP, OSPF, IS-IS, and BGP.

S3700 hardware supports IPv4/IPv6 dual stack, IPv6 over IPv4 tunnels (including manual tunnels, 6to4 tunnels, and ISATAP tunnels), and Layer 3 line-speed forwarding.

High Scalability and Excellent Reliability

The S3700 supports intelligent stacking (iStack). Up to nine S3700s can be connected with stack cables to set up a stack, which functions as a virtual switch.

Besides STP, RSTP, and MSTP, the S3700 supports enhanced Ethernet reliability technologies, such as Smart Link and Rapid Ring Protection Protocol (RRPP), which implement millisecond-level protection switchovers and ensure network reliability.

The S3700 supports Ethernet Ring Protection Switching (ERPS), also referred to as G.8032. As the latest ring network protocol, ERPS was developed based on traditional Ethernet MAC and bridging functions and uses a mature Ethernet OAM function and a Ring Automatic Protection Switching (R-APS) mechanism to implement millisecond-level protection switching. ERPS supports various services and allows flexible networking, helping customers build a network with lower OPEX and CAPEX.

The S3700 supports Bidirectional Forwarding Detection (BFD), which provides millisecond-level fault detection for protocols, such as OSPF, IS-IS, VRRP, and PIM, to improve network reliability.

Maintenance-Free Design and Manageability

The S3700 adopts a maintenance-free design and supports batch remote upgrades. It provides multiple maintenance and management modes to help users monitor various data.

GARP VLAN Registration Protocol (GVRP) dynamically distributes, registers, and propagates VLAN attributes to reduce network administrator workloads and ensure the correct VLAN configurations. In a complex network topology, GVRP simplifies VLAN configuration and reduces network communication faults caused by incorrect VLAN configuration.

The S3700 supports MUX VLAN, which isolates the Layer 2 traffic between interfaces in a VLAN. Interfaces in a subordinate, separate VLAN can communicate with ports in the principal VLAN, but cannot communicate with each other.

Unique Fan-Free and Energy-Saving Design

S3700s equipped with 24 electrical ports offer a fan-free design, which dramatically reduces power consumption and eliminates noise.

An energy-saving integrated circuit design ensures uniform heat dissipation. Idle ports can enter a sleep mode to further reduce power consumption.

Product Specifications

Item S3700-SI* S3700-EI*
Ports description S3700-28TP-EI**/S3700-28TP-SI/S3700-28TP-PWR-SI/S3700-28TP-PWR-EI/S3700-28TP-EI-MC: 24*10/100Base-TX
S3700-52P-EI/S3700-52P-SI/S3700-52P-PWR-EI/S3700-52P-PWR-SI: 48*10/100Base-T
S3700-28TP-EI-24S: 24*100Base-FX
S3700-52P-EI-24S: 24*10/100Base-T+24*100Base-FX
S3700-52P-EI-48S: 48*100Base-FX
SI/EI 28 ports: 2*1000Base-X, 2*GE Combo
SI/EI 52 ports: 2*100/1000Base-X, 2*1000Base-X
MAC address table IEEE 802.1d compliance
16K MAC address entries
MAC address learning and aging
Static, dynamic, and blackhole MAC address entries
Packet filtering based on source MAC addresses
Guest VLANs, voice VLAN, and super VLAN
VLAN assignment based on MAC addresses, protocols, and IP subnets
Selective QinQ
1:1 VLAN mapping
N:1 VLAN mapping
Reliability RRPP (ring topology, intersecting rings, and multi-instance), implementing protection switchover within 50 ms
Smart Link tree topology and Smart Link multi-instance, providing the millisecond-level protection switchover
STP(IEEE 802.1d), RSTP(IEEE 802.1w), and MSTP(IEEE 802.1s)
BPDU protection, root protection, and loop protection
Smart Ethernet Protection (SEP)
N/A BFD for OSPF, BFD for IS-IS, BFD for VRRP, and BFD for PIM
IP routing Static routing, RIPv1, RIPv2, and ECMP
IPv6 features Neighbor Discovery (ND)
IPv6 ping, IPv6 tracert, and IPv6 Telnet
Manually configured tunnel
6to4 tunnel
ISATAP tunnel
ACLs based on the source IPv6 address, destination IPv6 address, Layer 4 ports, or protocol type
MLD v1/v2 snooping
Multicast 1 K multicast groups
IGMP v1/v2/v3 snooping and IGMP fast leave
Multicast VLAN and multicast replication between VLANs
Multicast load balancing among member ports of a trunk
Controllable multicast
Port-based multicast traffic statistics
N/A IGMP v1/v2/v3, PIM-SM, PIM-DM and PIM-SSM
QoS/ACL Rate limiting on packets sent and received by an interface
Packet redirection
Port-based traffic policing and two-rate three-color CAR
Eight queues on each port
WRR, DRR, SP, WRR+SP, and DRR+SP queue scheduling algorithms
Re-marking of the 802.1p priority and DSCP priority
Packet filtering on Layers 2 through 4, filtering out invalid frames based on the source MAC address, destination MAC address, source IP address, destination IP address, port number, protocol type, and VLAN ID
Rate limiting in each queue and traffic shaping on ports
Security User privilege management and password protection
DoS attack defense, ARP attack defense, and ICMP attack defense
Binding of the IP address, MAC address, interface, and VLAN
Port isolation, port security, and sticky MAC
Blackhole MAC address entries
Limit on the number of learned MAC addresses
802.1x authentication and limit on the number of users on an interface
AAA authentication, RADIUS authentication, HWTACACS authentication, and NAC
SSH v2.0
CPU defense
Blacklist and whitelist
Surge protection 6KV surge protection capability on service ports (1KV on service ports on PoE devices)
Management and maintenance iStack
MAC Forced Forwarding (MFF)
Remote configuration and maintenance using Telnet
Virtual cable test
Ethernet OAM (IEEE 802.3ah and 802.1ag)
Dying gasp power-off alarm (S3700-28TP-EI-MC-AC)
SNMP v1/v2c/v3 and RMON
Operating environment Operating temperature: 0℃–50℃(long term);
Relative humidity: 10%–90% (non-condensing)
Power supply AC:
Rated voltage range: 100V to 240V AC; 50/60 Hz
Maximum voltage range: 90V to 264V AC; 50/60 Hz
Rated voltage range: –48V to –60V DC
Maximum voltage range: –36V to –72V DC
Note: PoE-support switches do not use DC power supplies.
Dimensions (W x D x H) S3700-28TP-EI/SI, S3700-28TP-EI-MC, S3700-28TP-EI-24S, S3700-52P-EI/SI: 442 mm x 220 mm x 43.6 mm
S3700-28TP-PWR-EI/SI, S3700-52P-EI-48S, S3700-52P-EI-24S, S3700-52P-PWR-EI/SI: 442 mm x 420 mm x 43.6 mm
Weight S3700-28TP-SI<2.5Kg
(without power supply)
(without power supply)
(without power supply)
S3700-52P-PWR-EI< 4.3Kg
(without power supply)
Power consumption S3700-28TP-SI<20W
(PoE: 740W)
(PoE: 740W)
(PoE: 740W)
(PoE: 740W)

*:The S3700 is provided in the standard version (SI) , enhanced version (EI). The S3700 switches of the EI series are collectively called S3700-EI, the S3700 switches of the SI series are collectively called S3700-SI.

**:S3700-28TP-EI is short for S3700-28TP-EI-AC and S3700-28TP-EI-DC. As product versions are irrelevant to the power supply mode, the product names mentioned in product specifications do not contain AC or DC. This rule also applies to other product models.

  • The product information may contain the product functions provided in future. For the actual product specifications, contact Huawei local sales office.

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