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Huawei S5720S-LI series switches are simplified Gigabit Ethernet switches that are energysaving and provide flexible GE access ports and 10GE uplink ports.
HUAWEI S5720S-LI Series Agile Fixed Switches
Product Overview
Building on next-generation, high-performance hardware and Huawei Versatile Routing Platform (VRP), the S5720S-LI supports
intelligent stack (iStack), flexible Ethernet networking, and diversified security control. It provides customers with an energy
saving, easy-to-manage, easy-to-expand, and cost-effective gigabit to the desktop solution. Additionally, Huawei customizes
specialized models to meet customer requirements in special scenarios.
Models and Appearances
Features and Highlights
Flexible Ethernet Networking
In addition to traditional Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), and Multiple Spanning Tree
Protocol (MSTP), the S5720S-LI supports Huawei-developed Smart Ethernet Protection (SEP) technology and the latest
Ethernet Ring Protection Switching (ERPS) standard. SEP is a ring protection protocol specific to the Ethernet link layer, and
applies to various ring network topologies, such as open ring topology, closed ring topology, and cascading ring topology. This
protocol is reliable, easy to maintain, and implements fast protection switching within 50ms. ERPS is defined in ITU-T G.8032. It
implements millisecond-level protection switching based on traditional Ethernet MAC and bridging functions.
The S5720S-LI supports Smart Link, which implements backup of uplinks. One S5720S-LI switch can connect to multiple
aggregation switches through multiple links, significantly improving reliability of access devices.
The S5720S-LI supports Ethernet OAM (IEEE 802.3ah/802.1ag) to fast-detect link faults.
Diversified Security Control
The S5720S-LI supports 802.1x authentication, MAC address authentication, and combined authentication on a per port
basis, as well as Portal authentication on a per VLANIF interface basis, and implements dynamic policy delivery (VLAN, QoS,
and ACL) to users.
The S5720S-LI provides a series of mechanisms to defend against DoS attacks and user-targeted attacks. DoS attacks
are targeted at switches and include SYN flood, Land, Smurf, and ICMP flood attacks. User-targeted attacks include bogus
DHCP server attacks, IP/MAC address spoofing, DHCP request flood, and changing of the DHCP CHADDR value.
The S5720S-LI collects and maintains information about access users, such as IP addresses, MAC addresses, IP address
leases, VLAN IDs, and interface numbers in a DHCP snooping binding table. In this way, IP addresses and access interfaces of
DHCP users can be tracked. You can specify DHCP snooping trusted and untrusted ports to ensure that users connect only to
the authorized DHCP server.
The S5720S-LI supports strict ARP learning. This feature prevents ARP spoofing attackers from exhausting ARP entries so
that users can connect to the Internet normally.
Easy Operation and Maintenance
The S5720S-LI supports Huawei Easy Operation, a solution that provides zero-touch deployment, replacement of faulty
devices without additional configuration, USB-based deployment, batch configuration, and batch remote upgrade. The Easy
Operation solution facilitates device deployment, upgrade, service provisioning, and other management and maintenance
operations, and also greatly reduces costs of operation and maintenance. The S5720S-LI can be managed and maintained
using Simple Network Management Protocol (SNMP) V1, V2, and V3, Command Line Interface (CLI), web-based network
management system, or Secure Shell (SSH) V2.0. Additionally, it supports remote network monitoring (RMON), multiple log
hosts, port traffic statistics collection, and network quality analysis that helps with network consolidation and reconstruction.
EasyDeploy: The Commander collects information about the topology of the client connecting to the Commander and
saves client startup information based on the topology. The client can be replaced without configuration. Configuration and
scripts can be delivered to the client in batches. In addition, the configuration delivery result can be queried. The Commander
can collect and display power consumption on the entire network.
The S5720S-LI can use the GARP VLAN Registration Protocol (GVRP) to implement dynamic distribution, registration,
and propagation of VLAN attributes. GVRP reduces manual configuration workload and ensures correct configuration.
Additionally, the S5720S-LI supports MUX VLAN, which involves a principal VLAN and multiple subordinate VLANs.
Subordinate VLANs are classified into group VLANs and separate VLANs. Ports in the principal VLAN can communicate with
ports in subordinate VLANs. Ports in a subordinate group VLAN can communicate with each other, whereas ports in a
subordinate separate VLAN can communicate only with ports in the principal VLAN. The S5720S-LI also supports VLAN Central
Management Protocol (VCMP) and VLAN-Based Spanning Tree (VBST) protocol.
The models with front power sockets can be installed in a 300 mm deep cabinet, and can be maintained through the front
panel. This simplifies operation and maintenance. The cabinets can be placed against the wall or back to back, and is well
suited for shallow cabinets and limited equipment room space.
Intelligent O&M
The S5720S-LI provides telemetry technology to collect device data in real time and send the data to Huawei campus
network analyzer CampusInsight. The CampusInsight analyzes network data based on the intelligent fault identification
algorithm, accurately displays the real-time network status, effectively demarcates and locates faults in a timely manner, and
identifies network problems that affect user experience, accurately guaranteeing user experience.S5720S-LI Series Simplified Gigabit Ethernet Switches
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The S5720S-LI supports a variety of intelligent O&M features for audio and video services, including the enhanced Media
Delivery Index (eMDI). With this eDMI function, the switch can function as a monitored node to periodically conduct statistics
and report audio and video service indicators to the CampusInsight platform. In this way, the CampusInsight platform can
quickly demarcate audio and video service quality faults based on the results of multiple monitored nodes.
Intelligent Upgrade
Switches support the intelligent upgrade feature. Specifically, switches obtain the version upgrade path and download the
newest version for upgrade from the Huawei Online Upgrade Platform (HOUP). The entire upgrade process is highly automated
and achieves one-click upgrade. In addition, preloading the version is supported, which greatly shortens the upgrade time and
service interruption time.
The intelligent upgrade feature greatly simplifies device upgrade operations and makes it possible for the customer to
upgrade the version independently. This greatly reduces the customer's maintenance costs. In addition, the upgrade policies on
the HOUP platform standardize the upgrade operations, which greatly reduces the risk of upgrade failures.
iStack
The S5720S-LI supports intelligent stack (iStack). This technology combines multiple switches into a logical switch.
Member switches in a stack implement redundancy backup to improve device reliability and use inter-device link aggregation to
improve link reliability.
iStack provides high network scalability. You can increase ports, bandwidth, and processing capacity of a stack by simply
adding member switches to the stack.
iStack also simplifies device configuration and management. After a stack is set up, multiple physical switches are
virtualized into one logical device. You can log in to any member switch in the stack to manage all the member switches in the
stack. S5720S-LI support electrical ports stacking.
Excellent Network Traffic Analysis
The S5720S-LI supports the sFlow function. It uses a method defined in the sFlow standard to sample traffic passing
through it and sends sampled traffic to the collector in real time. The collected traffic statistics are used to generate statistical
reports, helping enterprises maintain their networks.
Cloud Management
The Huawei cloud management platform allows users to configure, monitor, and inspect switches on the cloud, reducing
on-site deployment and O&M manpower costs and decreasing network OPEX. Huawei switches support both cloud
management and on-premise management modes. These two management modes can be flexibly switched as required to
achieve smooth evolution while maximizing return on investment (ROI).
OPS
Open Programmability System (OPS) is an open programmable system based on the Python language. IT administrators
can program the O&M functions of a switch through Python scripts to quickly innovate functions and implement intelligent O&M.
Perpetual PoE
When a PoE switch is rebooted after the software version is upgraded, the power supply to PDs is not interrupted. This
capability ensures that PDs are not powered off during the switch reboot.
