The cloudengine S5735-L48LP4S-A-V2 is an advanced gigabit Ethernet switch in Huawei’s CloudEngine S5735-L-V2 series. It is designed for enterprise campus access scenarios, offering a combination of high-density gigabit access, PoE+ power supply, and intelligent network management features. With its built-in AC power module, high switching capacity, and versatile software capabilities, it is well-suited for powering IP phones, surveillance cameras, and wireless access points while ensuring efficient data forwarding and network reliability.

Key Technical Specifications

Below are the main specifications for the cloudengine S5735-L48LP4S-A-V2, as provided in official Huawei documentation:
▪ Description: cloudengine S5735-L48LP4S-A-V2, 48 × 10/100/1000BASE-T Ethernet ports, 4 × GE SFP uplink ports, PoE+, built-in AC power supply
▪ Part Number: 98012047
▪ Built-in PoE Power: 380 W from integrated AC power supply, supports full PoE on up to 24 ports (802.3af) or up to 12 ports (802.3at)
▪ Forwarding Performance: 78 Mpps (million packets per second)
▪ Switching Capacity: 104 Gbps device-level, 520 Gbps system-level
▪ Dimensions (W×D×H): 442.0 mm × 220.0 mm × 43.6 mm (1U height)
▪ Weight (with packaging): Approximately 7.57 kg
▪ Typical Power Consumption (without PoE): ~48.6 W
▪ Maximum Power Consumption (without PoE): ~63.7 W
▪ Maximum Power Consumption (with full PoE load): ~462.8 W
▪ Operating Temperature: –5 °C to +50 °C (0–1800 m altitude)
▪ Storage Temperature: –40 °C to +70 °C
▪ Operating Humidity: 5% RH to 90% RH, non-condensing

Hardware Design and Ports

Port Layout and Physical Features

The front panel of the cloudengine S5735-L48LP4S-A-V2 includes:
▪ Forty-eight 10/100/1000BASE-T PoE+ RJ-45 ports for data and power transmission
▪ Four 1000BASE-X SFP uplink ports for optical fiber connections
▪ One RJ-45 console port for local device management
▪ One MODE button for switching status indicator modes
▪ One PNP button for plug-and-play deployment or restoring factory defaults
▪ A ground screw for safety grounding
▪ Power cable locking strap jack for securing the power connection
▪ AC socket for power supply input

Power and Cooling Systems

The switch uses a built-in non-removable AC power module providing up to 380 W PoE power. This allows it to supply continuous power to multiple connected devices. For cooling, it adopts dual built-in fans that draw air from the left side and expel it from the right side, maintaining stable operating temperatures. Noise levels remain low during normal operation, although fan speed increases briefly during startup.

Software Features & Intelligent Capabilities

Advanced Ethernet and Reliability Features

The device supports multiple Ethernet reliability mechanisms, including:
▪ Spanning Tree Protocol (STP), Rapid STP (RSTP), and Multiple STP (MSTP)
▪ Ethernet Ring Protection Switching (ERPS, G.8032 standard)
▪ Smart Link for fast uplink switchover

Security and Policy Control

Security features include:
▪ 802.1X, MAC-based, and hybrid authentication methods
▪ Dynamic VLAN assignment, Quality of Service (QoS) policy enforcement, and Access Control Lists (ACLs)
▪ Protection against common attacks such as DoS (including SYN flood, Smurf, ICMP flood), DHCP spoofing, IP/MAC spoofing, and ARP attacks
▪ DHCP snooping, trusted port configuration, and strict ARP learning to prevent table overflow

Security Features in Detail

The 802.1X authentication ensures that only authorized devices can access the network, improving endpoint security. MAC-based authentication provides another layer of control, identifying devices by their unique hardware addresses. The hybrid method allows flexibility in environments with mixed authentication requirements. ACLs enable fine-grained control of traffic, allowing or denying packets based on IP, MAC, or protocol rules. DoS protection safeguards network stability by filtering malicious traffic patterns. DHCP snooping protects against rogue DHCP servers, while trusted port configuration prevents unauthorized connections. Strict ARP learning stops ARP spoofing attacks, protecting the integrity of IP-to-MAC mapping in the network.

Operation, Maintenance & Stack Support

Ease of operation and maintenance is ensured through:
▪ Zero-touch deployment (plug-and-play) and USB-based configuration
▪ Batch upgrade capabilities
▪ SNMP v1/v2c/v3, CLI, web-based GUI, and SSH v2.0 for flexible management
▪ Remote Monitoring (RMON), logging, and traffic statistics collection
▪ MUX VLAN and VLAN-based spanning tree for network segmentation
▪ iStack technology for combining multiple switches into one logical device for scalability and redundancy

Extended O&M Capabilities

Zero-touch deployment simplifies large-scale rollouts by allowing switches to be configured automatically upon connection, reducing manual work. USB-based configuration offers a quick backup and restore mechanism. SNMP management allows integration with network monitoring platforms, enabling performance tracking and fault alerts. RMON extends visibility into historical traffic patterns, aiding in capacity planning. iStack technology increases both capacity and reliability, as multiple switches operate as a single device with a unified control plane. VLAN-based spanning tree optimizes topology for different VLANs, improving redundancy and load balancing.

Cloud and Programmability

Cloud and automation capabilities include:
▪ Telemetry support for real-time data collection and analysis
▪ Intelligent upgrade through Huawei’s online upgrade platform
▪ Cloud management compatibility for centralized control
▪ Open Programmability System (OPS) allowing Python-based automation scripting

PoE Features

The PoE+ (Power over Ethernet) functionality allows the switch to deliver both power and data over Ethernet cables to connected devices. The 380 W PoE budget is sufficient to power high numbers of 802.3af or 802.3at devices. Perpetual PoE ensures powered devices remain operational during switch reboots, while fast PoE enables quick power restoration after a restart.

Performance Highlights

With a forwarding performance of 78 Mpps and switching capacity of 104 Gbps (device) / 520 Gbps (system), the cloudengine S5735-L48LP4S-A-V2 ensures fast, low-latency packet processing for dense access networks. These performance metrics allow it to handle simultaneous high-volume data flows without congestion.

Use Cases and Application Scenarios

Campus Network Access Layer

Providing high-density gigabit connectivity for office floors, classrooms, or dormitories, while simultaneously powering IP telephony and wireless APs.

Aggregation/Core in SMB Deployments

Serving as an aggregation or core switch in small to medium-sized business environments, leveraging its routing capabilities and stacking support for reliability.

High-Reliability Enterprise Environments

Supporting ERPS, Smart Link, and PoE resilience features to minimize downtime in mission-critical deployments.

Cloud-Managed and Intelligent O&M

Enabling remote monitoring, fault detection, and performance optimization via Huawei’s cloud and telemetry platforms.

Conclusion

The cloudengine S5735-L48LP4S-A-V2 is a feature-rich gigabit PoE+ access switch tailored for enterprise and SMB environments. Its combination of 48 PoE+ ports, high-performance switching, and intelligent management makes it a solid choice for networks requiring both data and power delivery. Designed with robust security, high reliability, and cloud-readiness, it offers a long-term, scalable solution for modern campus and business network infrastructures.

Huawei CloudEngine S5735-L48LP4S-A-V2 (98012047) Switch

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