LK5026GSM, a Layer 2+ Managed Gigabit Switches support both IPv4 and IPv6 protocols and software Layer 3 static routing capability, and provide up to 24 10/100/1000Mbps Gigabit Ethernet ports,4 Gigabit SFP slots.

The LK5026GSM is programmed for advanced switch management functions such as 802.1Q VLAN and Q-in-Q VLAN, Multiple Spanning Tree protocol (MSTP), loop and BPDU guard, IGMP snooping, and MLD snooping. Also, the Link Layer Discovery Protocol (LLDP) is the Layer 2 protocol included to help discover basic information about neighboring devices on the local broadcast domain. 

Physical Port

• 22-Port 10/100/1000BASE-T RJ45 copper 
• 2- 1000M Combo Ports
• 2 100/1000BASE-X mini-GBIC/SFP slots
• RJ45 console interface for basic management and setup

Layer 2 Features

• Prevents packet loss with back pressure (half-duplex) and IEEE 802.3x pause frame flow control (full-duplex)
• High performance of Store-and-Forward architecture and runt/CRC filtering eliminates erroneous packets to optimize the network bandwidth
• Storm Control support
- Broadcast / Multicast / Unknown unicast
• Supports VLAN- IEEE 802.1Q tagged VLAN- Up to 255 VLANs groups, out of 4094 VLAN IDs- Supports provider bridging (VLAN Q-in-Q, IEEE 802.1ad)- Private VLAN Edge (PVE)- Protocol-based VLAN- MAC-based VLAN- Voice VLAN
• Supports 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, spanning tree by VLAN- BPDU Guard
• Supports Link Aggregation
• - 802.3ad Link Aggregation Control Protocol (LACP)- Cisco ether-channel (static trunk)- Maximum 6 trunk groups, up to 8 ports per trunk group- Up to 16Gbps bandwidth (full duplex mode)
• Provides port mirror (many-to-1)
• Port mirroring to monitor the incoming or outgoing traffic on a particular port
• Loop protection to avoid broadcast loops

Layer 3 IP Routing Features

• Supports soft-based IPv4/IPv6 static routing functions

Quality of Service

• Ingress Shaper and Egress Rate Limit per port bandwidth control
• 8 priority queues on all switch ports
• Traffic classification
- IEEE 802.1p CoS- TOS/DSCP/IP Precedence of IPv4/IPv6 packets- IP TCP/UDP port number- Typical network application
• Strict priority and Weighted Round Robin (WRR) CoS policies
• Supports QoS and In/Out bandwidth control on each port
• Traffic-policing policies on the switch port
• DSCP remarking

Multicast

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

Security

• Authentication
- IEEE 802.1x Port-based/MAC-based network access authentication- Built-in RADIUS client to co-operate with the RADIUS servers- TACACS+ login users access authentication- RADIUS/TACACS+ users access authentication
• Access Control List
- IP-based Access Control List (ACL)- MAC-based Access Control List
• Source MAC/IP address binding
• DHCP Snooping to filter un-trusted DHCP messages
• Dynamic ARP Inspection discards ARP packets with invalid MAC address to IP address binding
• IP Source Guard prevents IP spoofing attacks
• Auto DoS rule to defend DoS attack
• IP address access management to prevent unauthorized intruder

Management

• IPv4 and IPv6 dual stack management
• Switch Management Interfaces
- Console/Telnet Command Line Interface- Web switch management- SNMP v1, v2c, and v3 switch management- SSH/SSL secure access
• IPv6 IP Address/NTP/DNS management
• Built-in Trivial File Transfer Protocol (TFTP) client
• BOOTP and DHCP for IP address assignment
• System Maintenance
- Firmware upload/download via HTTP/TFTP- Reset button for system reboot or reset to factory default- Dual Images
• DHCP Relay
• DHCP Option82
• User Privilege levels control
• NTP (Network Time Protocol)
• Link Layer Discovery Protocol (LLDP) and LLDP-MED
• Network Diagnostic
- ICMPv6/ICMPv4 Remote Ping- Cable Diagnostic technology provides the mechanism to detect and report potential cabling issues
• SMTP/Syslog remote alarm
• Four RMON groups (history, statistics, alarms and events)
• SNMP trap for interface Linkup and Linkdown notification
• System Log