The S5700S-LI series gigabit enterprise switches (S5700S-LI for short) are next-generation energy-saving switches developed by Huawei to meet the demand for high-bandwidth access and Ethernet multi-service aggregation. Based on the cutting-edge hardware and Huawei Versatile Routing Platform (VRP) software, the S5700S-LI provides a large switching capacity and high-density GE ports. The S5700S-LI is for use in various enterprise network scenarios. For example, it can function as an access or aggregation switch on a campus network, a gigabit access switch in an Internet data center (IDC), or a desktop switch to provide 1000 Mbit/ s access for terminals. The S5700S-LI is easy to install and maintain, reducing workloads for network planning, construction, and maintenance. The S5700S-LI uses advanced reliability, security, and energy conservation technologies, helping enterprise customers build a next generation IT network.
•Twenty-four 10/100/1000 Base-T ports and four 1000Base-X Ports
•AC power supply, supporting RPS
•Forwarding performance: 42Mpps
•Switching Capacity: 128Gbp
Innovative Energy Saving Design
The S5700S-LI offer customers extensive selection of energy-saving with standard mode, basic mode andadvanced mode that accommodates most needs. By matching port link down/up, optical-module inplace/out of place, port shut down/undo shutdown, idle period, busy period to increase the proportion of the dynamic energy-saving to reduce the power consumption. The S5700S-LI series reduces energy consumption without compromising system performance, ensuring good user experience. The S5700-LI adopts multiple cutting-edge energy-saving designs, including Energy Efﬁcient Ethernet (EEE), port energy detection, dynamic CPU frequency adjustment, and device sleeping.
Comprehensive reliability mechanisms
Besides STP, RSTP, and MSTP, the S5700S-LI supports enhanced Ethernet reliability technologies such as Smart Link and RRPP (Rapid Ring Protection Protocol), which implement millisecond-level protection switchover and ensure network reliability. It also provides Smart Link multi-instance and RRPP multi instance to implement load balancing among links, optimizing bandwidth usage.
The S5700S-LI supports the Smart Ethernet Protection (SEP) protocol, a ring network protocol applied to the link layer on an Ethernet network. SEP can be used on open ring networks and can be deployed on upper-layer aggregation devices to provide fast switchover (within 50 ms), ensuring non-stop transmission of services. SEP features simplicity, high reliability, fast switchover, easy maintenance, and ﬂexible topology, facilitating network planning and management.
Complying with IEEE 802.3ah and 802.1ag, the S5700S-LI supports point-to-point Ethernet fault management and can detect faults in the last mile of an Ethernet link to users.
Well-designed QoS policies and security mechanisms
The S5700S-LI implements complex trafﬁc classiﬁcation based on packet information such as the 5-tuple, IP preference, ToS, DSCP , IP protocol type, ICMP type, TCP source port, VLAN ID, Ethernet protocol type, and CoS. ACLs can be applied to inbound or outbound direction on an interface. The S5700S-LI supports a flow-based two-rate three-color CAR. Each port supports eight priority queues and multiple queue scheduling algorithms such as WRR, DRR, PQ, WRR+PQ, and DRR+PQ. All of these ensure the quality of voice, video, and data services.
The S5700S-LI provides multiple security measures to defend against Denial of Service (DoS) attacks and attacks against networks or users. DoS attack types include SYN Flood attacks, Land attacks, Smurf attacks, and ICMP Flood attacks. Attacks to networks refer to STP BPDU/root attacks. Attacks to users include bogus DHCP server attacks, man-in-the-middle attacks, IP/MAC spooﬁng attacks, DHCP request ﬂood attacks. DoS attacks that change the CHADDR ﬁeld in DHCP packets are also attacks against users.
The S5700S-LI supports DHCP snooping, which discards invalid packets that do not match any binding entries, such as ARP spooﬁng packets and IP spooﬁng packets. This prevents man-in-the-middle attacks to campus networks that hackers initiate by using ARP packets. The interface connected to a DHCP server can be conﬁgured as a trusted interface to protect the system against bogus DHCP server attacks.
The S5700S-LI supports strict ARP learning, which prevents ARP spooﬁng attacks that will exhaust ARP entries. It also provides IP source check to prevent DoS attacks caused by MAC address spoofing, IP address spooﬁng, and MAC/IP spooﬁng.
The S5700S-LI supports centralized MAC address authentication, 802.1x authentication, and NAC. It authenticates users based on statically or dynamically bound user information such as the user name, IP address, MAC address, VLAN ID, access interface, and ﬂag indicating whether antivirus software is installed. VLANs, QoS policies, and ACLs can be applied to users dynamically.
The S5700S-LI can limit the number of MAC addresses learned on an interface to prevent attackers from exhausting MAC address entries by using bogus source MAC addresses. This function minimizes packet ﬂooding that occurs when MAC addresses of users cannot be found in the MAC address table.
Easy deployment and maintenance free
The S5700S-LI supports automatic configuration, plug-and-play, and batch remote upgrade. These capabilities simplify device management and maintenance and reduce maintenance costs. The S5700SLI supports SNMP v1/v2/v3 and provides flexible methods for managing devices. Users can manage the S5700S-LI using the CLI and Web NMS. The NQA function helps users with network planning and upgrades. In addition, the S5700SLI supports NTP , SSH v2, HWTACACS+, RMON, log hosts, and portbased trafﬁc statistics.
The S5700S-LI supports GVRP（GARP VLAN Registration Protocol）, which dynamically distributes, registers, and propagates VLAN attributes to reduce manual configuration workloads of network administrators and to ensure correct VLAN conﬁguration. In a complex network topology, GVRP simpliﬁes VLAN conﬁguration and reduces network communication faults caused by incorrect VLAN conﬁguration.
The S5700S-LI supports MUX VLAN. MUX VLAN isolates Layer 2 trafﬁc between interfaces in a VLAN. Interfaces in a subordinate separate VLAN can communicate with ports in the principal VLAN but cannot communicate with each other. MUX VLAN is usually used on an enterprise intranet to isolate user interfaces from each other but allow them to communicate with server interfaces. This function prevents communication between network devices connected to certain interfaces or interface groups but allows the devices to communicate with the default gateway.
Fine-grained trafﬁc management
The S5700S-LI supports the Sampled Flow (sFlow) function, which uses a sampling mechanism to obtain statistics about trafﬁc forwarded on a network and sends the statistics to the Collector in real time. The Collector analyzes trafﬁc statistics to help customers manage network trafﬁc efﬁciently.
IPv6 features: IPv6 host Static IPv6 routes Path MTU (PMTU) IPv6 ping, IPv6 tracert IPv4 and IPv6 dual stack ACLs based on the source IPv6 address, destination IPv6 address, Layer 4 ports, or protocol type. Multicast IGMP v1/v2/v3 snooping and IGMP fast leave MLD v1/v2 snooping Multicast VLAN Multicast load balancing among member ports of a trunk Controllable multicast Port-based multicast trafﬁc statistics
QoS/ACL: Rate limiting on packets sent and received by an interface Packet redirection Port-based trafﬁc policing and two-rate three-color CAR Eight queues on each port WRR, DRR, PQ, WRR+PQ, and DRR+PQ queue scheduling algorithms Re-marking of the 802.1p priority and DSCP priority Packet ﬁltering at Layer 2 to Layer 4, ﬁltering out invalid frames based on the source MAC address, destination MAC address, source IP address, destination IP address, port number, protocol type, and VLAN ID Rate limiting in each queue and trafﬁc shaping on ports
Security: User privilege management and password protection DoS attack defense, ARP attack defense, and ICMP attack defense Binding of the IP address, MAC address, interface, and VLAN Port isolation, port security, and sticky MAC Limit on the number of learned MAC addresses 802.1x authentication and limit on the number of users on an interface AAA authentication, RADIUS authentication, HWTACACS authentication, and NAC SSH v2.0 Hypertext Transfer Protocol Secure (HTTPS) CPU defense Blacklist and whitelist
Surge protection: 6 KV surge protection capability on service ports
Management and maintenance: MAC Forced Forwarding (MFF) Virtual cable test Ethernet OAM (IEEE 802.3ah and 802.1ag) SNMP v1/v2/v3 RMON Web NMS NTP System logs and alarms of different levels DLDP MUX VLAN EEE 802.3az(Energy Efﬁcient Ethernet) sFlow
Operating environment: Operating temperature: 0oC–50oC Relative humidity: 5%–95% (non-condensing)
Input voltage: AC: Rated voltage range: 100 V to 240 V AC, 50/60 Hz Maximum voltage range: 90 V to 264 V AC, 50/60 Hz
Dimensions: (W x D x H) 442 mm x 220 mm x 43.6 mm 442 mm x 310 mm x 43.6 mm
Power consumption: < 25W < 52W