Hardware-based 10/100Mbps, half/full duplex and 1000Mbps full duplex mode, flow control and auto-negotiation, and auto MDI/MDI-X
Features Store-and-Forward mode with wire-speed filtering and forwarding rates
IEEE 802.3x flow control for full duplex operation and back pressure for half duplex operation
10K jumbo frame
Automatic address learning and address aging
Supports CSMA/CD protocol

Layer 2 Features

Prevents packet loss with back pressure (half-duplex) and IEEE 802.3x pause frame flow control (full-duplex)
High performance Store and Forward architecture, broadcast storm control, runt/CRC filtering eliminates erroneous packets to optimize the network bandwidth
Supports VLAN
- IEEE 802.1Q tagged VLAN
- Provider Bridging (VLAN Q-in-Q) support (IEEE 802.1ad)
- Protocol VLAN
- Voice VLAN
- Private VLAN
- Management VLAN
- GVRP
Supports Spanning Tree Protocol
- STP (Spanning Tree Protocol)
- RSTP (Rapid Spanning Tree Protocol)
- MSTP (Multiple Spanning Tree Protocol)
- STP BPDU Guard, BPDU Filtering and BPDU Forwarding
Supports Link Aggregation
- IEEE 802.3ad Link Aggregation Control Protocol (LACP)
- Cisco ether-channel (Static Trunk)
- Maximum 8 trunk groups, up to 8 ports per trunk group
Provides port mirror (many-to-1)
Loop protection to avoid broadcast loops
Supports ERPS (Ethernet Ring Protection Switching)

Quality of Service

Ingress/Egress Rate Limit per port bandwidth control
- Storm Control support
- Broadcast/Unknown-Unicast/Unknown-Multicast
Traffic classification
- IEEE 802.1p CoS
- TOS/DSCP/IP Precedence of IPv4/IPv6 packets
Strict priority and Weighted Round Robin (WRR) CoS policies

Multicast

Security

Authentication
- IEEE 802.1X Port-based network access authentication
- Built-in RADIUS client to co-operate with the RADIUS servers
- DHCP Option 82
- RADIUS/TACACS+ login user access authentication
Access Control List
- IPv4/IPv6 IP-based ACL
- IPv4/IPv6 IP-based ACE
- MAC-based ACL
- MAC-based ACE
MAC Security
- Static MAC
- MAC Filtering
Port Security for Source MAC address entries filtering
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
DoS Attack Prevention

Management

IPv4 and IPv6 dual stack management
Switch Management Interface
- Web switch management
- Console/Telnet Command Line Interface
- SNMP v1 and v2c switch management
- SSHv2, TLSv1.2 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
User Privilege Levels Control
Built-in Trivial File Transfer Protocol (TFTP) client
BOOTP and DHCP for IP address assignment
System Maintenance
- Firmware upload/download via HTTP/TFTP
- Configuration upload/download through Web interface
- Dual Images
- Hardware reset button for system reboot or reset to factory default
SNTP Network Time Protocol
Network Diagnostic
- ICMPv6/ICMPv4 Remote Ping
- Cable Diagnostics
Link Layer Discovery Protocol (LLDP) Protocol and LLDP-MED
Event message logging to remote Syslog server
PLANET Smart Discovery Utility for deployment management
PLANET NMS system and CloudViewer for deployment management

Redundant Power System (GS-4210-24T4SR)

Hardware Specifications

Copper Ports: 24 x 10/100/1000BASE-T RJ45 Auto-MDI/MDI-X ports
SFP/mini-GBIC Slots:
- 4 x 100/1000BASE-X SFP interfaces with Port-25 to Port-28.
- Supports 100/1000Mbps dual mode and DDM
Console: 1 x RS-232-to-RJ45 serial port (115200, 8, N, 1)
Reset Button:
- < 5 sec: System reboot
- > 5 sec: Factory default
Dimensions (W x D x H): 441 x 207 x 44 mm, 19-inch, 1U height
Weight:
- GS-4210-24T4S: 2.1kg
- GS-4210-24T4SR: 2.1 kg
ESD Protection:
- Contact Discharge 4KV DC
- Air Discharge 8KV DC
Enclosure: Metal
Power Requirements:
- GS-4210-24T4S:
  - AC 100~240V, 50/60Hz, auto-sensing
- GS-4210-24T4SR:
  - AC 100~240V, 50/60Hz, auto-sensing
  - DC 36-72V
Power Consumption / Dissipation:
GS-4210-24T4S: 19.3 watts (max.)/65BTU
GS-4210-24T4SR: AC: 19.3 watts (max.)/65BTU - DC: 19.2 watts (max.)/65BTU
LED:
- System:
  - Power (Green)
    - 10/100/1000T RJ45 Interfaces (Port 1 to Port 24):
    - 1000 LNK/ACT (Green), 10/100 LNK/ACT (Orange)
    - 100/1000Mbps SFP Interfaces (Port 25 to Port 28):
    - 1000 LNK/ACT (Green), 100 LNK/ACT (Orange)

Switching

Layer 2 Functions

Port Mirroring:
- TX/RX/both
- Many-to-1 monitor
- Up to 4 sessions
VLAN:
- 802.1Q tagged-based VLAN
- Up to 256 VLAN groups, out of 4094 VLAN IDs
- 802.1ad Q-in-Q tunneling
- Voice VLAN
- Protocol VLAN
- Private VLAN (Protected port)
- GVRP
Link Aggregation:
- IEEE 802.3ad LACP/Static Trunk
- Supports 8 trunk groups with 8 ports per trunk
Spanning Tree Protocol:
- STP, IEEE 802.1D Spanning Tree Protocol
- RSTP, IEEE 802.1w Rapid Spanning Tree Protocol
- MSTP, IEEE 802.1s Multiple Spanning Tree Protocol
- STP BPDU Guard, BPDU Filtering and BPDU Forwarding
IGMP Snooping:
- IGMP (v2/v3) Snooping
- IGMP Querier
- Up to 256 multicast groups
MLD Snooping: MLD (v1/v2) Snooping, up to 256 multicast groups
QoS:
- 8 mapping ID to 8 level priority queues
  - Port number
  - 802.1p priority
  - 802.1Q VLAN tag
  - DSCP field in IP packet
- Traffic classification based, strict priority and WRR
Ring: Supports ERPS, and complies with ITU-T G.8032

Security Functions

Access Control List: IPv4/IPv6 IP-based ACL/MAC-based ACL
Port Security:
- IEEE 802.1X – Port-based authentication
- Built-in RADIUS client to co-operate with RADIUS server
- RADIUS/TACACS+ user access authentication
MAC Security:
- IP-MAC port binding
- MAC filter
- Static MAC address
Enhanced Security:
- DHCP Snooping and DHCP Option82
- STP BPDU guard, BPDU filtering and BPDU forwarding
- DoS attack prevention
- ARP inspection
- IP source guard

Management Functions

Basic Management Interfaces:
- RS232 to RJ45 Console
- Web browser
- Telnet
- SNMP v1, v2c
Secure Management Interfaces: SSHv2, TLS v1.2, SNMP v3
System Management:
- Firmware upgrade by HTTP/TFTP protocol through Ethernet network
- LLDP protocol
- SNTP
- PLANET Smart Discovery Utility
- PLANET NMS System/CloudViewer
Event Management:
- Remote/Local Syslog
- System log
SNMP MIBs:
- RFC 1213 MIB-II
- RFC 1215 Generic Traps
- RFC 1493 Bridge MIB
- RFC 2674 Bridge MIB Extensions
- RFC 2737 Entity MIB (Version 2)
- RFC 2819 RMON (1, 2, 3, 9)
- RFC 2863 Interface Group MIB
- RFC 3635 Ethernet-like MIB

Standards Conformance