SGS-5240-20S4C4XR – 20 Port Stackable Managed Switch with 48V redundant power

Part Number: SGS-5240-20S4C4XR Category

The Planet SGS-5240-20S4C4XR is a Layer 2+ Stackable Managed Gigabit Switch that provides high-density performance, Layer 3 static routing with 10Gbps uplink interfaces delivered in a rugged, strong case.

Physical Ports

  • 24 100/1000BASE-X SFP slots
  • 4-Port 10/100/1000BASE-T RJ45 copper interfaces, shared with Port-1 to Port-4
  • 4 10GBASE-SR/LR SFP+ slots, compatible with 1000BASE-SX/LX/BX SFP
  • RJ45 to DB9 console interface for switch basic management and setup
  • One 10/100BASE-TX Management port


Stacking Features

  • IP Stacking
    • Connects with stack member via Gigabit TP, SFP and 10G SFP+ interfaces
    • Single IP address management, supporting up to 16 IP units stacked together
  • Hardware Stacking
    • Virtualized multiple SGS-5240 switch series stacked into one logical device
    • Connects with stack member via assigned 10G SFP+ interfaces
    • Single IP address stack management, supporting up to 6 hardware units stacked together
    • Stacking architecture supports redundant ring mode


IP Routing Features

  • IPv4/IPv6 hardware static routing
  • Routing interface provides per VLAN routing mode


Layer 2 Features

  • Supports VLAN
    • IEEE 802.1Q tag-based VLAN
    • Provider Bridging (VLAN Q-in-Q, IEEE 802.1ad) supported
    • GVRP for dynamic VLAN management
    • Protocol-based VLAN
    • MAC-based VLAN
    • IP subnet-based VLAN
    • Voice VLAN
  • Supports Link Aggregation
    • 802.3ad Link Aggregation Control Protocol (LACP)
    • Cisco ether-channel (static trunk)
  • Supports Spanning Tree Protocol
    • STP, IEEE 802.1D (Classic Spanning Tree Protocol)
    • RSTP, IEEE 802.1w (Rapid Spanning Tree Protocol)
    • MSTP, IEEE 802.1s (Multiple Spanning Tree Protocol, spanning tree by VLAN)
    • Supports BPDU & root guard
  • Port mirroring to monitor the incoming or outgoing traffic on a particular port (many to one)
  • Supports G.8032 ERPS (Ethernet Ring Protection Switching)
  • Loop protection to avoid broadcast loops
  • Link Layer Discovery Protocol (LLDP)
  • Compatible with Cisco uni-directional link detection (UDLD) that monitors a link between two switches and blocks the ports on both ends of the link if the link fails at any point between the two devices


Quality of Service

  • Input and output rate limit per port bandwidth control
  • 8 priority queues on all switch ports
    • IEEE 802.1p CoS/DSCP/IP Precedence
    • VLAN ID
    • ACL
    • Policy-based ingress and egress QoS



  • Supports IPv4 IGMP snooping v1, v2 and v3
  • Supports IPv6 MLD snooping v1 and v2
  • Querier mode support
  • IPv4 IGMP snooping port filtering
  • IPv6 MLD snooping port filtering
  • MVR (Multicast VLAN Registration)



  • Authentication
    • IEEE 802.1x port-based/MAC-based network access authentication
    • IEEE 802.1x authentication with guest VLAN
    • Built-in RADIUS client to cooperate with the RADIUS servers
    • RADIUS/TACACS+ users access authentication
    • Guest VLAN assigns clients to a restricted VLAN with limited services
  • Access Control List
    • IP-based Access Control List (ACL)
    • MAC-based Access Control List (ACL)
    • Time-based ACL
  • DHCP snooping to filter distrusted DHCP messages
  • Dynamic ARP Inspection discards ARP packets with invalid MAC address to IP address binding
  • IP Source Guard prevents IP spoofing attacks
  • IP address access management to prevent unauthorized intruder



  • IPv4 and IPv6 dual stack management
  • Switch Management Interfaces
    • Console and Telnet Command Line Interface
    • HTTP web switch management
    • SNMP v1 and v2c switch management
    • SSHv2, SSLv3 and SNMP v3 secure access
  • SNMP Management
    • Four RMON groups (history, statistics, alarms, and events)
    • SNMP trap for interface Link Up and Link Down notification
  • Built-in Trivial File Transfer Protocol (TFTP) client
  • BOOTP and DHCP for IP address assignment
  • System Maintenance
    • Firmware upload/download via HTTP
    • Reset button for system reboot or reset to factory default
    • Dual images
  • DHCP Functions:
    • DHCP Relay
    • DHCP Option 82
  • User Privilege levels control
  • Network Time Protocol (NTP) and SNTP
  • Network Diagnostic
    • SFP-DDM (Digital Diagnostic Monitor)
    • Cable diagnostic technology provides the mechanism to detect and report potential cabling issues
    • ICMPv6/ICMPv4 remote ping
  • Syslog remote alarm
  • System Log


Redundant Power System

  • Redundant 100~240V AC and 36-75V DC dual power
  • Active-active redundant power failure protection
  • Backup of catastrophic power failure on one supply
  • Fault tolerance and resilience
Hardware Specifications
10/100/1000BASE-T RJ45 Ports4, shared with Port-21 to Port-24
1000BASE-X SFP Slots24 1000BASE-SX/LX/BX SFP interfaces
Compatible with 100BASE-FX SFP transceiver
10GBASE-X SFP+ Slots4 10GBASE-SR/LR SFP+ interfaces
Compatible with 1000BASE-SX/LX/BX SFP transceiver
Console1 x RJ45-to-RS232 serial port (115200, 8, N, 1)
Flash Memory64Mbytes
Dimensions (W x D x H)440 x 280 x 44 mm
Weight3.3 kg
Power Consumption43W/146.72 BTU
Power Requirements – ACAC 100~240V, 50/60Hz
Power Requirements – DCDC 36~72V, 2.5A max.
Switch ArchitectureStore-and-forward
Switch Fabric128Gbps/
Switch Throughput95.23Mpps
Address Table16K MAC address table with auto learning function
ARP Table1024
ACL Table900
Shared Data Buffer1.5MB
Jumbo Frame9KB
Flow ControlBack pressure for half duplex
IEEE 802.3x pause frame for full duplex
Layer 3 Functions
IP InterfacesMax. 32 VLAN interfaces
Routing TableIPv4 256 entries
IPv6 128 entries
Routing ProtocolsIPv4 hardware static routing
IPv6 hardware static routing
Layer 2 Functions
Port ConfigurationPort disable/enable
Auto-negotiation 10/100/1000Mbps full and half duplex mode selection
Flow control disable/enable
Port loopback detect
Port StatusDisplay each port’s speed duplex mode, link status, flow control status and auto negotiation status
VLANIEEE 802.1Q tagged based VLAN, up to 4K VLAN groups
IEEE 802.1ad Q-in-Q VLAN stacking/tunneling
IEEE 802.1v Protocol-based VLAN
Port-based VLAN
MAC-based VLAN
IP Subnet-based VLAN
Voice VLAN
GVRP for VLAN management, up to 256 VLAN
Port MirroringTX/RX/Both
Remote port mirror (RSPAN)
Many-to-1 monitor
Spanning Tree ProtocolIEEE 802.1D Spanning Tree Protocol (STP)
IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
IEEE 802.1s Multiple Spanning Tree Protocol (MSTP)
BPDU Guard, BPDU filtering and BPDU transparent
Root Guard
STP-based loopback detection
MulticastIPv4 IGMP v1/v2/v3 snooping
IPv4 Querier mode support
IGMP Filtering and IGMP Throttling
IGMP Proxy reporting
IGMP mroute-forward mode
Up to 255 multicast groups
IPv6 MLD v1/v2 snooping
Up to 255 multicast groups
Multicast VLAN Register (MVR), supports 5 multicast VLANs
Link AggregationIEEE 802.3ad Ling Aggregation Control Protocol (LACP)
Static trunk link aggregation
Supports 26 groups with 8 ports per trunk group
Up to 80Gbps bandwidth (full duplex mode)
Load Balance Algorithm:
– Source IP/destination IP/Source + destination IP
– Source MAC/destination MAC/Source + destination MAC
Storm ControlBroadcast/Multicast/Unicast storm control
Rate: 64Kbpss-10,000Mbps
Bandwidth ControlInput/Output/Both
Per port bandwidth control
Gigabit port: 64Kbpss-1,000Mbps
10Gigabit port: 64Kbpss-10,000Mbps
QoS8 priority queues on all switch ports
Scheduling for priority queues
– Weighted Round Robin (WRR)
– Strict priority
– Hybrid (DRR/WRR + strict)
Traffic classification:
– IEEE 802.1p CoS/DSCP/IP Precedence
– Policy-based ingress and egress QoS
RingITUT G.8032 ERPS v1 and v2
Security Functions
Access Control ListSupports Standard and Expanded ACL
– IP-based ACL
– MAC-based ACL
– Time-based ACL
ACL based on:
– MAC Address
– IPv4/IPv6 IP Address
– Ethertype
– Protocol-number/UDP
– sport/dport
– 802.1p Priority
Up to 900 entries
SecurityPort security
Supports static MAC + port binding
Defend against DoS or TCP attacks
DHCP Snooping, DHCP Option 82
IP source guard
Dynamic ARP inspection
Command line authority control based on user levels
TACACS+ client
Network Access ControlIEEE 802.1x port-based network access control
MAC-based authentication
Web authentication
Local/RADIUS authentication
Management Functions
System ConfigurationConsole and Telnet
Web browser
SNMP v1, v2c
Secure Management InterfacesIPv4/IPv6 SSHv2, SSLv3, SNMPv3
Maximum 8 sessions for SSH and telnet connection
System ManagementIPv4 and IPv6 dual stack management
SNMP RMON 1, 2, 3, 9 four groups
Firmware upgrade by HTTP/TFTP/FTP protocol through Ethernet network
Configuration upload/download through HTTP/TFTP/FTP protocol
Supports dual images and multiple configuration files
Supports IEEE 802.1ab LLDP protocol
NTP/SNTP client
RADIUS authentication for IPv4/IPv6 login user name and password
Security IP safety net management function: avoid unlawful landing at nonrestrictive area
Event ManagementRemote Syslog
System log
IP Clustering16 members
IP Clustering Compatibility ListSGS-5240-24T4X
Hardware Stacking6 members max.
Last 2 10G SFP+ slots are functioned as Stacking Up and Down interfaces
RFC 1215 Internet Engineering Task Force
RFC 1354 IP-Forwarding MIB
RFC 1493 Bridge MIB
RFC 1643 Ether-like MIB
RFC 1907 SNMP v2
RFC 2096 IP forward MIB
RFC 2233 if MIB
RFC 2465 IPv6 MIB
RFC 2573 SNMP v3 notify
RFC 2574 SNMP v3 vacm
RFC 2674 Bridge MIB Extensions (IEEE 802.1Q MIB)
RFC 2674 Bridge MIB Extensions (IEEE 802.1P MIB)
Standard Conformance
Regulatory ComplianceFCC Part 15 Class A, CE
Standards ComplianceIEEE 802.3 10BASE-T
IEEE 802.3u 100BASE-TX
IEEE 802.3z Gigabit 1000BASE-SX/LX
IEEE 802.3ab Gigabit 1000BASE-T
IEEE 802.3ae 10Gb/s Ethernet
IEEE 802.3x flow control and back pressure
IEEE 802.3ad port trunk with LACP
IEEE 802.1D Spanning Tree Protocol
IEEE 802.1w Rapid Spanning Tree Protocol
IEEE 802.1s Multiple Spanning Tree Protocol
IEEE 802.1p Class of Service
IEEE 802.1Q VLAN tagging
IEEE 802.1ad Q-in-Q VLAN stacking/tunneling
IEEE 802.1v Protocol-based VLAN
IEEE 802.1X port authentication network control
IEEE 802.1ab LLDP
RFC 791 IP
RFC 1112 IGMP v1
RFC 2236 IGMP v2
RFC 3376 IGMP v3
RFC 2710 MLD v1
FRC 3810 MLD v2
ITU-T G.8032 ERPS Ring
OperatingTemperature: 0 ~ 50 degrees C
Relative Humidity: 5 ~ 90% (non-condensing)
StorageTemperature: -10 ~ 70 degrees C
Relative Humidity: 5 ~ 90% (non-condensing)