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Appendix B - Technical Specifications D-Link Web Smart Switch User Manual
Appendix B - Technical Specifications
Hardware Specifications
Key Components / Performance
Switching Capacity:
- DES-1228: 12.8Gbps
- DES-1228P: 12.8Gbps
- DES-1252: 17.6Gbps
Max. Forwarding Rate
- DES-1228: 9.52Mpps
- DES-1228P: 9.52Mpps
- DES-1252: 13.09Mpps
Forwarding Mode: Store and Forward
Packet Buffer memory: 128K Bytes
SDRAM for CPU: 8M Bytes
Flash Memory: 2M Bytes
Port Functions
24 or 48 10/100BaseT ports compliant
with the following standards:
- IEEE 802.3
- IEEE 802.3u
- Supports Full-Duplex operations
4 1000Base-T ports compliant with the
following standards:
- IEEE 802.3
- IEEE 802.3u
- IEEE 802.3ab
- Supports Full-Duplex operations
2 combo SFP ports compliant with the
following standards:
- IEEE 802.3z
- Supports Full-Duplex operations
SFP transceivers supported
- DEM-310GT (1000BASE-LX)
- DEM-311GT (1000BASE-SX)
- DEM-314GT (1000BASE-LH)
- DEM-315GT (1000BASE-ZX)
- DEM-312GT2 (1000BASE-SX)
- DEM-210 (100BASE-FX)
- DEM-211 (100BASE-FX)
WDM Transceivers Supported:
- DEM-330T (TX-1550/RX-1310nm)
- DEM-330R (TX-1310/RX-1550nm)
- DEM-331T (TX-1550/RX-1310nm)
- DEM-331R (TX-1310/RX-1550nm)
Power over Ethernet (DES-1228P Only)
PoE Capable Ports: Port 1-24
Supplies power up to 15.4W per port,
compliant with IEEE802.3af standards
Power Budget: 170W max
Auto discovery
Auto disable port if the port current is over
350mA
Following the standard classification
0(15.4W), 1(4.0W), 2(7.0W), 3(15.4W),
4(15.4W)
Physical & Environment
AC input, 100~240 VAC, 50/60Hz,
internal universal power supply
Operation Temperature 0~40°C
Storage Temperature -10~70°C
Operation Humidity: 10%~90% RH
Storage Humidity: 5%~90% RH
Emission (EMI) Certifications
FCC class A
CE Class A
VCCI Class A
Safety Certifications
cUL, UL
Features
L2 Features
Supports up to 8K MAC address
IGMP snooping: supports 64 multicast
group
802.1D Spanning Tree
Port trunk (Link Aggregation): up to 6
groups per device, up to 8 ports per group
Port mirroring
VLAN
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
Security
802.1X port-based access control
Broadcast Storm Control
D-Link Safeguard Engine
Management
Web-based GUI or SmartConsole Utility
SNMP support
DHCP client
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