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The S5720-LI is a next-generation energy-saving gigabit Ethernet switch that provides flexible GE access ports and 10GE uplink ports.
HUAWEI S5720-LI Series Agile Fixed Switches
Introduction
The S5720-LI is a next-generation energy-saving gigabit Ethernet switch that provides flflexible GE access
ports and 10GE uplink ports. Building on next-generation, high-performance hardware and the Huawei
Versatile Routing Platform (VRP), the S5720-LI supports intelligent stack (iStack), flexible Ethernet
networking, and diversifified security control. It provides customers with a green, easy-to-manage, easy-to
expand, and cost-effective gigabit to the desktop solution.
S5720-LI
PoE Power Supply Confifiguration
• The S5720-LI series PoE switches, including S5720-12TP-PWR-LI-AC, S5720-28P-PWR-LI-AC, S5720-52P
PWR-LI-AC, S5720-28X-PWR-LI-AC, S5720-52X-PWR-LI-AC, S5720-28TP-PWR-LI-AC, S5720-28TP-PWR
LI-ACL, have built-in PoE power modules.
• The S5720-12TP-PWR-LI-AC and S5720-28TP-PWR-LI-ACL has a built-in power module and does not
support pluggable power modules. The built-in power module can provide 124 W PoE power, which
ensures full PoE power on 8 ports in compliance in 802.3af or on 4 ports in compliance with 802.3at.
The switch cannot connect to an RPS power supply.
5720-52X-PWR-LI-AC
S5720-28TP-LI-AC
S5720-28TP-PWR-LI-AC
S5720-28TP-PWR-LI-ACL
• 48 × Ethernet 10/100/1000 Base-T ports, 4 × 10 Gig SFP+
ports
• AC power supply, supporting RPS (redundant power supply)
• PoE+
• Forwarding performance: 144 Mpps
• Switching capacity: 336 Gbit/s
• 24 × Ethernet 10/100/1000 Base-T ports, 4 × Gig SFP ports,
2 × combo 10/100/1000Base-T Ethernet ports
• AC power supply
• Forwarding performance: 51 Mpps
• Switching capacity: 336 Gbit/s
• 24 × Ethernet 10/100/1000 Base-T ports, 4 × Gig SFP ports,
2 × combo 10/100/1000Base-T Ethernet ports
• AC power supply
• PoE+
• Forwarding performance: 51 Mpps
• Switching capacity: 336 Gbit/s
• 24 × Ethernet 10/100/1000 Base-T ports, 4 × Gig SFP ports,
2 × combo 10/100/1000Base-T Ethernet ports
• AC power supply
• 8-port PoE+
• Forwarding performance: 51 Mpps
• Switching capacity: 336 Gbit/s
S5720-52X-LI-AC
S5720-52X-LI-DC
• 48 × Ethernet 10/100/1000 Base-T ports, 4 × 10 Gig SFP+
ports
• Two models: AC model and DC model, supporting RPS
(redundant power supply)
• Forwarding performance: 144 Mpps
• Switching capacity: 336 Gbit/s
3Huawei Enterprise Sx700 Series Switch Product
• The S5720-28TP-PWR-LI-AC, S5720-28P-PWR-LI-AC, and S5720-52P-PWR-LI-AC has a built-in power
module and does not support pluggable power modules. The built-in power module can provide 370
W PoE power, which ensures full PoE power on 24 ports in compliance in 802.3af or on 12 ports in
compliance with 802.3at. The switch cannot connect to an RPS power supply.
Non-PoE Power Supply Confifiguration
• The S5720-LI series non-PoE switches have a single internal power module and do not support pluggable
power modules.
• The S5720-28X-LI-AC, S5720-28X-LI-DC, S5720-28X-PWR-LI-AC, S5720-28X-LI-24S-AC, S5720-28X-LI-
24S-DC, S5720-52X-LI-AC, S5720-52X-LI-DC, and S5720-52X-PWR-LI-AC support the RPS1800 and use
the RPS1800 as the backup power supply.
4 Product Characteristics and Advantages
Flexible Ethernet Networking
• In addition to traditional Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), and Multiple
Spanning Tree Protocol (MSTP), the S5720-LI supports Huawei-developed Smart Ethernet Protection (SEP)
technology and the latest Ethernet Ring Protection Switching (ERPS) standard. SEP is a ring protection
protocol specifific 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 50 ms. ERPS is defifined in ITU-T G.8032.
It implements millisecond-level protection switching based on traditional Ethernet MAC and bridging
functions.
• The S5720-LI supports Smart Link, which implements backup of uplinks. One S5720-LI switch can
connect to multiple aggregation switches through multiple links, signifificantly improving reliability of
access devices.
• The S5720-LI supports Ethernet OAM (IEEE 802.3ah/802.1ag) to fast-detect link faults.
Diversifified security control
• The S5720-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 S5720-LI provides a series of mechanisms to defend against DoS attacks and user-targeted attacks.
DoS attacks are targeted at switches and include SYN flflood, Land, Smurf, and ICMP flflood attacks. User
targeted attacks include bogus DHCP server attacks, IP/MAC address spoofifing, DHCP request flflood, and
changing of the DHCP CHADDR value.
• The S5720-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 S5720-LI supports strict ARP learning. This feature prevents ARP spoofifing attackers from exhausting
ARP entries so that users can connect to the Internet normally.
4Huawei Enterprise Sx700 Series Switch Product
Easy operation and maintenance
• The S5720-LI supports Huawei Easy Operation, a solution that provides zero-touch deployment,
replacement of faulty devices without additional confifiguration, USB-based deployment, batch
confifiguration, 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 S5720-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 traffific statistics collection, and network quality analysis that
helps with network consolidation and reconstruction.
• The S5720-LI supports Super Virtual Fabric (SVF), which virtualizes the "Core/aggregation + Access switch
+ AP" structure into a logical device. The S5720-LI enables the simplest network management solution in
the industry. It allows plug-and-play access switches and APs. In addition, the S5720-LI supports service
confifiguration templates. The templates are confifigured on core devices and automatically delivered to
access devices, enabling centralized control, simplifified service confifiguration, and flflexible confifiguration
modifification. The S5720-LI functions as a client in an SVF system.
• The S5720-LI can use the GARP VLAN Registration Protocol (GVRP) to implement dynamic distribution,
registration, and propagation of VLAN attributes. GVRP reduces manual confifiguration workload and
ensures correct confifiguration. Additionally, the S5720-LI supports MUX VLAN, which involves a principal
VLAN and multiple subordinate VLANs. Subordinate VLANs are classifified 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 S5720-LI also supports VLAN Central
Management Protocol (VCMP) and VLAN-Based Spanning Tree (VBST) protocol.
iStack
• The S5720-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 simplififies device confifiguration 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. The S5720-LI support stacking through electrical
ports.
Excellent network traffific analysis
• The S5720-LI supports the sFlow function. It uses a method defifined in the sFlow standard to sample
traffific passing through it and sends sampled traffific to the collector in real time. The collected traffific
statistics are used to generate statistical reports, helping enterprises maintain their networks.
Easy O&M with front panel
• The models with front power sockets can be installed in a 300 mm deep cabinet, and can be maintained
through the front panel. This simplififies 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.
Cloud-based management
• The S5720-LI can work in cloud-based management mode or traditional management based on
requirements. In cloud-based management mode, the S5720-LI can be monitored, managed, and
confifigured on the Huawei agile cloud management platform (Agile Controller-Cloud Manager). A mobile
O&M App is also supported.
