D-Link DGS-3000-20L 16 10/100/1000 BaseT ports + 4 SFP ports Managed L2 Metro Ethernet Gigabit Switch

Reliable Hardware and Software Features

• 6 kV surge protection for Ethernet ports 

• Real Time Clock (RTC)

• Dying Gasp

• Ethernet Ring Protection Switching (ERPS) 

• Redundant Power Supply (RPS) support

Advanced Switch Features 

• VLAN trunking 

• VLAN mirroring

• ISM VLAN (Multicast VLAN)

• RSPAN

Comprehensive Security Features

• Access Control Lists (ACLs) 

• D-Link Safeguard Engine

• BPDU attack protection 

• ARP spoofing prevention 

• IP-MAC-Port Binding

• DoS attack prevention

• IEEE 802.1X port-based Access Control

• WAC/MAC-based Access Control 

• Guest VLAN

System Management 

• 802.1ag CFM

• 802.3ah Ethernet Link OAM 

• SNMP v1/v2c/v3 

• RMON v1/v2

• LLDP/LLDP-MED