D-Link's next generation Web Smart Ethernet switch series blends plug-and-play simplicity with exceptional value and reliability for small and medium-sized business (SMB) networking. Each switch is housed in a new style rack-mount metal case with easy-to-view front-panel diagnostic LEDs, and provides advance features including 4 Gigabit uplinks, combo 1000BASE-T/SFP, network security, traffic segmentation, QoS and versatile management.
Choices of 24 and 48 ports. Two port densities are available for selection: 24 Ethernet ports and 48 Ethernet ports. Supporting auto-detection of MDI/MDIX, these switches bring inexpensive and easy Ethernet connection to the desktops. Each switch provides 4 Gigabit uplinks connection to a Gigabit backbone or servers.
Power Over Ethernet Option. Switch model DES-1228P provides built-in 802.3af Power over Ethernet for network sites needing to run power over the network cables. Each the 24 10/100BASE-TX Ethernet ports of this switch provides up to 15.4 watts power for connected wireless access points, IP phones and other PoE-supported devices, allowing them to be deployed at difficult places such as on
high walls and ceilings, where AC power outlets are not readily available.
Extensive Layer 2 Features. Implemented as complete L2 devices, these switches include functions such as IGMP snooping, port mirroring, Spanning Tree and port trunks to enhance performance and network resiliency.
Traffic Segmentation and QoS. The switches support 802.1Q VLAN Tagging for traffic segmentation by groups to enhance network security and performance. They also support 802.1p Priority Queues, enabling users to run bandwidth-sensitive applications such as streaming multimedia and VoIP on the network. These functions allow the switches to work seamlessly with managed VLAN and 802.1p traffic on the network.
Network Security. The switches provide MAC address filters screen access to the network. They support 802.1x port-based authentication, allowing the network to be configured with external RADIUS servers. Additional features like D-Link Safeguard Engine protect the switches against traffic flooding caused by virus/worm outbreaks.
Versatile Management. Switch configuration and management is through the SmartConsole Utility or a web-based GUI. SmartConsole is an easy way to access the switch from a local PC; users do not have to type in any IP address or subnet, and all switches connected on the network are displayed on the screen for instant access. The web-based GUI allows switch access from any location on the network or from a remote site, using a web-browser. It allows extensive switch configuration setting, which can be backed up for duplication in other switches.
In addition, users can also use the built-in MIB to poll the switches for information about their status and send traps of abnormal events. MIB support allows users to integrate the switches with other third-party devices for management in an SNMP environment.
- 48 10/100BASE-TX Ports
- 2 10/100/1000BASE-T Ports
- Auto-Negotiation of Network Speed
- 2 Combo 10/100/1000BASE-T/SFP
Packet Forwarding Rate
MAC Address Table
- IGMP snooping: supports 64 multicast group
- Default flooding for non-joined multicast traffic
- 802.1D Spanning Tree
- Port trunk (Link Aggregation): up to 6 groups per device, up to
- 8 ports per group
- Port mirroring
- 802.1Q VLAN standard (VLAN Tagging)
- Up to 256 static VLAN groups
QoS (Quality of Service)
- 802.1p Priority Queues standard
- Up to 4 queues per port
- Supports WRR mode in queue handling
- 802.1x port-based access control
- Broadcast Storm Control: threshold of 8K, 16K, 32K, 64K,
- 128K, 512K, 1024K, 2048K, 4096K bytes per second
- D-Link Safeguard Engine to protect CPU from broadcast/multicast/unicast flooding
- Web-based GUI or SmartConsole Utility
- SNMP support
- DHCP client
- Trap setting for destination IP, system events, fiber port events, twisted-pair port events
- Port access control
- Web-based configuration backup/restoration
- Web-based firmware backup/upload
- Firmware upgrade using SmartConsole Utility
- RFC 1213 MIB-II
- D-Link Enterprise Private MIB
100 to 120VAC, 200 to 240VAC, 50/60Hz, Internal Power Supply
Power Consumption (Max.)
440 x 310 x 44 mm (17.32 x 5.51 x 1.73 inches)
19-Inch Rack-Mount Width, 1U Height
3.72 kg (8.20 lbs)
0 to 40 C (32 F to 104 F)
-10 C to 70 C (14 F to 158 F)
10% to 90% RH
5% to 90% RH
FCC Class A, CE, VCCI, C-Tick
DES-1252 48-Port 10/100Mbps with 4-Port 10/100/1000Mbps and 2-Port Combo SFP Smart Switch
Optional SFP Transceivers
DEM-211 SFP transceiver, 100BASE-FX standard, multi-mode fiber, max. 2 km distance, 3.3V operating voltage
DEM-210 SFP transceiver, 100BASE-FX standard, single-mode fiber, max. 15 km distance, 3.3V operating Voltage
DEM-310GT SFP transceiver, 1000BASE-LX standard, single-mode fiber, max. 10 km distance, 3.3V operating voltage
DEM-311GT SFP transceiver, 1000BASE-SX standard, multi-mode fiber, max. 550 m distance, 3.3V operating voltage
DEM-312GT2 SFP transceiver, 1000BASE-SX standard, multi-mode fiber, max. 2 km distance, 3.3V operating voltage
DEM-314GT SFP transceiver, 1000BASE-LX standard, single-mode fiber, max. 50 km distance, 3.3V operating voltage
DEM-315GT SFP transceiver, 1000BASE-LX standard, single-mode fiber, max. max. 80 km distance, 3.3V operating voltage
DEM-330T WDM SFP transceiver, 1000BASE-LX standard, single-mode fiber, max. 10 km distance, 3.3V operating voltage, 1550 nm Tx wavelength, 1310 nm Rx wavelength
DEM-330R WDM SFP transceiver, 1000BASE-LX standard, single-mode fiber, max. 10 km distance, 3.3V operating voltage, 1310 nm Tx wavelength, 1550 nm Rx wavelength
DEM-331T WDM SFP transceiver, 1000BASE-LX standard, single-mode fiber, max. 40 km distance, 3.3V operating voltage, 1550 nm Tx wavelength, 1310 nm Rx wavelength
DEM-331R WDM SFP transceiver, 1000BASE-LX standard, single-mode fiber, max. 40 km distance, 3.3V operating voltage, 1310 nm Tx wavelength, 1550 nm Rx wavelength