H3C S5590-EI series switches are a new generation of high-performance, high-port density, high-security Layer 3 Ethernet switches developed by H3C Technology Co., Ltd. (hereinafter referred to as H3C) using industry-leading ASIC technology, supporting IPv4/IPV6 Dual-stack management and forwarding, support static routing protocols and routing protocols such as RIP, OSPF, BGP, ISIS, etc., and support rich management and security features. It is a Gigabit Layer 3 Ethernet switch product for converged service networks.

In the campus network, H3C S5590-EI series switches can be used as aggregation layer equipment, or as the core of small and medium-sized enterprises; downward can provide high-density GE tandem lower layer switches, upward through 10G/25G/40G/100G fiber or link aggregation is aggregated to the core switch to build a high-performance end-to-end IP network solution together with other H3C products.

H3C S5590-EI series switches include the following models:

• S5590-28T8XC-EI: 28 x 10/100/1000BASE-T ports, 4 x 100/1000BASE-X SFP Combo ports, 8 x 10G/1G BASE-X SFP+ ports, 1 x expansion slot, 2 x fan tray slots, 2 x power supply slots;
• S5590-48T4XC-EI: 48 x 10/100/1000BASE-T ports, 4 x 10G/1G BASE-X SFP+ ports, 1 x expansion slot, 2 x fan tray slots, 2 x power supply slots;
• S5590-28S8XC-EI: 28 x 100/1000BASE-X SFP ports, 4 x 10/100/1000BASE-T Combo ports, 8 x 10G/1G BASE-X SFP+ ports, 1 x expansion slot, 2 x fan tray slots, 2 x power supply slots;
• S5590-48S4XC-EI: 48 x 100/1000BASE-X SFP ports, 4 x 10G/1G BASE-X SFP+ ports, 1 x expansion slot, 2 x fan tray slots, 2 x power supply slots;
• S5590-28P8XC-EI: 28 x 10/100/1000BASE-T ports (PoE+), 4 x 100/1000BASE-X SFP Combo ports, 8 x 10G/1G BASE-X SFP+ ports, 1 x expansion slot, 2 x fan tray slots, 2 x power supply slots;
• S5590-48P6XC-EI: 48 x 10/100/1000BASE-T ports (PoE+), 6 x 10G/1G BASE-X SFP+ ports, 1 x expansion slot, 2 x fan tray slots, 2 x power supply slots;
• S5590-48TS4X2QC-EI: 24 x 10/100/1000Base-T Ports, 24 x 100/1000 SFP Ports, 4 x 1G/10G SFP Plus Ports, 2 x 40G QSFP Plus Ports and 1 x Slot, 2 x power supply slots;
• S5590-24X4YC-EI: 24 x 1G/10G SFP Plus Ports,4 x 25G SFP28 Ports and 1 x expansion slot, 2 x power supply slots;

Based on H3C's Open Service Architecture (OAA), H3C S5590-EI series switches can not only provide the functions of traditional switches, but also integrate security module cards including FW, IPS, and load balancing, mini-iMC cards, and Eagle Vision cards. etc., making the S5590-EI series switches a converged multi-service bearing platform.

MACsec (Media Access Control Security) is an IEEE 802 LAN-based data security protocol, delivering MAC layer secure data transmission with user data encryption, frame integrity check and source authenticity verification.

Typically paired with the 802.1X authentication framework, MACsec identifies packets from authenticated devices after successful 802.1X authentication, and negotiates key pairs via the MKA (MACsec Key Agreement) protocol to encrypt user data and verify its integrity. This prevents ports from processing packets from unauthenticated or tampered devices.

H3C S5590-EI series switches support enhanced MACsec encryption with a 256-bit algorithm for higher data security, and all ports are equipped with 256-bit MACsec encryption to ensure full data protection.

H3C S5590-EI series switches support iNQA. iNQA provides the following benefits:

• True measurement results—iNQA measures the service packets directly to calculate packet loss results, thus reflecting the real network quality.
• Wide application range—Applicable to Layer 2 network and Layer 3 IP network. iNQA supports the network-level and direct link measurement flexibly.
• Fast fault location—iNQA obtains the packet loss time, packet loss location, and number of lost packets in real time.
• Applicable to different applications—You can apply iNQA to multiple scenarios, such as point-to-point, point-to-multipoint, and multipoint-to-multipoint.

H3C S5590-EI series switches support M-LAG, which enables links of multiple switches to aggregate into one to implement device-level link backup. M-LAG is applicable to servers dual-homed to a pair of access devices for node redundancy.

• Streamlined topology: M-LAG simplifies the network topology and spanning tree configuration by virtualizing two physical devices into one logical device.
• Independent upgrading: The DR member devices can be upgraded independently one by one to minimize the impact on traffic forwarding.
• High availability: The DR system uses a keepalive link to detect multi-active collision to ensure that only one member device forwards traffic after a DR system splits.

H3C S5590-EI series switches support Telemetry technology, which can send the switch's real-time resource information and alarm information to the O&M platform through the gRPC protocol.

The platform can realize network quality backtracking, troubleshooting, risk early warning, architecture optimization and other functions to accurately guarantee user experience by analyzing real-time data.

In addition to node and link protection, the switch offers the following hardware high availability features:

• 1+1 hot-swappable power module redundancy.
• Automatic power and fan tray status monitoring and alarming mechanisms.
• Automatic fan speed adjustment based on the change in temperature.
• Self-protection mechanisms that protect power modules against overcurrent, overvoltage, and overtemperature conditions.

• Fast PoE: Typically, PIs does not deliver power to PDs the moment the PSE is powered on but wait until the PSE completes startup. Fast PoE enables PIs to deliver power to PDs within few seconds after power is supplied to the PSE.
• Perpetual PoE: Perpetual PoE continuously monitors the PD states and ensures continued power supply to PDs even when the PSE device is hot rebooting.
• AI-driven PoE: Innovatively integrating AI technologies into PoE switches, H3C AI-driven PoE enables completely automated, intelligently managed, healed, and optimized PoE, bringing convenient and outstanding PoE experience to users.