H3C S6850-56HF Series Data Center Switches

H3C S6850-56HF Series Data Center Switches

H3C’s S6850 Series switches are intelligent access switches with high-density 25G ports, high hardware forwarding performance, and rich functionality designed for the data center. The devices are equipped with removable power supplies and fan modules. The series offers the industry’s most flexible 25GE, 100GE and 10GE port combinations in a compact switch.

The S6850 Series switches are ideal for high-density 25GE access networks and for use at the 100GE aggregation level in data centers and cloud infrastructure networks.

The S6850 series is represented by the following models:

S6850-56HF: 48 SFP28 25G ports, 8 QSFP28 100G ports

S6850-2C: 2 service slots modules, 2 QSFP28 100G ports

High density ports Access25GE

The switches offer high port density of 100G/40G/25G/10G and forwarding performance reaching 4 Tbit/s. With standard 25G ports, they can be used to access high-density servers in large data centers.

Wide range functions for centers processing data

The switches support a wide range of data center features, including the following:

The H3C S6850 series switches support VXLAN (Virtual Extensible Local Area Network) technology, which provides The two main benefits are greater scalability for Layer 2 segmentation and greater utilization of existing paths in the network.

H3C’s S6850 Series switches support MP-BGP EVPN (Multi-Protocol Edge Routing for Ethernet Virtual Private Networks), which can be used as a control plane for VXLAN networks, simplifying VXLAN configuration, eliminating traffic flooding, and eliminating the need for organizing a fully connected network between VTEPs through the use of BGP RR.

H3C’s S6850 series switches support FCoE (Fiber Channel over Ethernet) technology, which allows you to combine services for storage networks, data networks and computer networks in one network, which significantly reduces the cost of creation and maintenance.

H3C’s S6850 Series switches support Priority-based Flow Control (PFC), Enhanced Transmission Selection (ETS) for lane control, and Data Center Bridging eXchange (DCBX) ). These features ensure low latency and no packet loss for FC storage and high-speed computing services.

Technology intelligent fault-tolerant architectureH3C IRF2

Excellent scalability: with IRF2, device aggregation can be carried out on a plug-and-play basis and work” simply adding one or more switches to the IRF2 stack and enabling IRF2 stacking mode on the new device. The new devices will be managed through the same IP address, providing a scalable, easy-to-manage data center networking platform.

High Reliability: The IRF2 stack backs up all control plane and data plane information to achieve uninterrupted Layer 3 forwarding, significantly improving the reliability and performance of the IRF2 stack, eliminating critical elements whose failures could lead to failure of the entire system, and It also allows you to avoid disruptions in the work of the organization.

Load Balancing: IRF2 supports link aggregation across devices, allowing connections to higher and lower level devices using multiple physical links. This creates another layer of redundancy in the network and promotes fuller utilization of network resources.

Technology aggregation connections on various devices Distributed Resilient Network Interconnect (DRNI)

H3C’s S6850 series switches support DRNI technology, which allows links on different switches to be combined into a single connection for device-level link redundancy. DRNI can be used for servers with two network interfaces connected to a pair of access devices for host redundancy purposes.

Optimized Topology: DRNI simplifies network topology and configuration of spanning tree protocols by virtualizing two physical devices into one logical device.

Independent update: Devices in a distributed fault-tolerant group can be updated independently of each other, one by one, in order to have minimal impact on traffic forwarding.

High availability: In a distributed fault-tolerant group system, a keepalive message channel is used to detect collisions when several devices are active, so that only one of the devices in the group forwards traffic after dividing the system.


Developed means visual introduction

The rapid development of the data center industry is leading to the emergence of larger and larger data centers; at the same time, the main limiting factors for their further expansion are reliability, complexity of operation and maintenance. H3C’s S6850 Series switches provide industry-leading data automation, data management capabilities, and data center visibility.

INT technology (in-band telemetry information transmission over the network) is a network monitoring technology used to collect data from devices. Compared to traditional one-request-one-response network monitoring technologies, INT requires one-time setup to generate continuous reports, reducing the burden on devices to process requests. Using INT, you can collect timestamp information, device ID information, port information, and buffer information in real time. INT technology can be implemented in IP, EVPN and VXLAN networks.

It provides a range of traffic monitoring features and analytics tools, including sFlow, NetStream, SPAN/RSPAN/ERSPAN mirroring and port mirroring, to enable users to perform accurate traffic analysis and gain insight into application traffic on the network. Using these tools, customers can collect network traffic data to assess network health, obtain traffic analysis reports, plan traffic management settings, and optimize resource provisioning.

This technology supports real-time monitoring of port buffers and queues, which allows you to obtain accurate information and dynamically optimize the network.

The switches support PTP (Precision Time Protocol), which provides highly accurate clock synchronization on devices.

RoCE (RDMAover convergentEthernet)

Remote Direct Memory Access (RDMA) technology directly transfers user application data to the server storage system space, and in doing so uses the network to quickly transfer data from the local system to the memory of the remote system. RDMA eliminates multiple data copying and context changing operations during transmission, reducing the load on processors.

In RoCE technology, the RDMA mechanism is implemented within the standard Ethernet infrastructure. The H3C S6850 switches support RoCE technology and can be used to create a lossless Ethernet transport network that guarantees zero packet loss.

RoCE technology provides the following main functions: Priority-based Flow Control (PFC), Explicit Congestion Notification (ECN), protocol for automatically determining the settings of interacting devices (Data Center Bridging eXchange, DCBX), enhanced transport selection (Enhanced Transmission Selection, ETS) for lane control.

Flexibility programming

The switches feature industry-leading programmable switching ICs, allowing users to define the required forwarding logic.

At the same time, users can develop new functions to meet changing network development requirements through a simple software update.

Powerful capabilitiesSDN

H3C’s S6850 series switches use next-generation hardware with more flexible Openflow flow tables, additional resources, and more precise access control list (ACL) mapping, thereby significantly expanding the capabilities of building software-defined networks (SDN) in accordance with the SDN network requirements of data centers.

H3C’s S6850 Series switches support the standard Openflow protocol, which can be included and managed through the H3C cloud or other common cloud platforms or third-party controllers, allowing you to flexibly tailor your network to your organization’s needs and automate management. Users and third-party controllers can use standard interfaces to design and implement a custom network management strategy for rapid business growth, expanded functionality, and intelligent device management.

Comprehensive policies provision Security

H3C S6850 Series switches support Authentication, Authorization and Accounting (AAA), RADIUS Authentication, User Account Authentication, IP User Authentication -address, MAC address, VLAN and port, as well as dynamic and static binding; When paired with the H3C iMC network management platform, they provide real-time management, instant diagnostics, and mitigation of unacceptable network behavior.

H3C’s S6850 Series switches support advanced access control list (ACL)-based management capabilities; You can define a large number of ACLs for each incoming and outgoing port, and you can also use ACLs in conjunction with a VLAN. This simplifies user registration and avoids wasting ACL resources. In addition, the S6850 series switches take full advantage of Unicast Reverse Path Forwarding (uRPF) technology. When a device receives a packet, it checks the return route to confirm the source address where the packet supposedly came from, and discards the packet if there is no such path. This allows you to effectively counteract substitution of the source address on the network.

Various means increase Reliability

The S6850 series switches implement a variety of protection schemes to improve reliability at both the switch and link levels. All models, equipped with overcurrent, overvoltage and overtemperature protection, support redundant, removable power supplies, giving you the flexibility to select AC or DC power supplies based on your actual needs. All switches in the line support fault detection and alarm transmission for power supplies and fan modules, as well as adjusting fan speed based on ambient temperature.

The switches support a variety of channel reservation technologies, such as proprietary H3C developments – RRPP, VRRPE and Smart Link. These technologies ensure rapid network convergence even when the network carries large volumes of traffic from many different services.

Flexible choice directions airflow

To adapt to the cooling flow patterns in data center aisles, H3C’s S6850 Series switches offer the flexibility to select airflow direction, which can be either in the direction from the front panel to the rear, and in the opposite direction. The choice of airflow direction (from front to rear or vice versa) can be done by users by installing appropriate models of fan modules.

Excellent opportunities control

The switches provide the following features to enhance system management:

Multiple management interfaces, including a serial console port, a mini-USB console port, a USB port, two out-of-band management ports, and two SFP ports. SFP ports can be used as in-band management ports, through which encapsulated probe packets are sent to the controller or other control devices for in-depth analysis.

Supports various access methods, including SNMPv1/v2c/v3, Telnet, SSH 2.0, SSL and FTP.

Support for standard NETCONF APIs, which enable users to configure and manage switches, enhances compatibility with third-party applications.



Additional information

Weight 15 kg
Serial console port


Out-of-band management port

One GE twisted pair port and one GE fiber port

Mini USB console port


USB port



4 GB/8 GB

QSFP28 ports


SFP28 ports


SFP ports


Expansion slots

AC input voltage current

90 .. 264 V

Input voltage DC current

–40 .. –72 V

Power supply slots


Fan module slots

5 Hot-swappable, adjustable rotation speed and change air flow direction

Airflow direction

Front to back or back to front

Fixed power consumption

One AC power supply DC: 167 W Two AC power supplies DC: 179 W One DC power supply DC: 154 W Two DC power supplies current: 174 W

Typical Power Consumption

One AC power supply DC: 201 W Two AC power supplies DC: 224 W One DC power supply. current: 198 W Two DC power supplies. current: 210 W

Working temperature

0°C .. 45°C (32°F .. 113°F)

Operating humidity

5% to 95% non-condensing

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