Interfaces
• 24 port 10/100 Mb/s PoE
• 2 10/100/1000BASE-T ports
• 2-port Combo 10/100/1000Base-T / SFP

Ports
• IEEE 802.3 10BASE-T Ethernet (copper wire twisted-pair)
• IEEE 802.3u 100BASE-TX Fast Ethernet (copper wire twisted-pair)
• IEEE 802.3ab 1000BASE-T Gigabit Ethernet (copper wire twisted-pair)
• IEEE 802.3z Gigabit Ethernet (fiber)
• Auto-negotiation of ANSI / IEEE 802.3
• IEEE 802.3x Flow Control

Performance
• Switch capacity: 12.8 GB
• 64 bytes packet rate: 9.5 Mpps
• MAC-address table: 8K entries per device
• RAM Buffer: 512 KB
• SDRAM for CPU: 64 MB
• Flash-Memory: 16 MB
• Switching Method: Store-and-forward

Power over Ethernet (PoE)
• Standard PoE: 802.3af
• Functions of PoE ports
  Ports 1-4 up to 15.4 or 30 watts per port
  Ports 5-24 up to 15.4 watt per port
• Power PoE: 193 watts maximum

Diagnostic Lights
• Power (per device)
• Link / Activity / Speed ​​(per port)

Layer 2 features
• MAC Address Table: 8K
• Flow Control
  802.3x Flow Control
  HOL blocking prevention
• IGMP Snooping
  IGMP v1/v2 Snooping
  Supports up to 256 IGMP-group
  Support for up to 64 static multicast groups
  IGMP Snooping on the VLAN
  Support for IGMP Querier
• Filtering of multicast
  Unregistered groups redirect
  Unregistered groups filtering
• Spanning Tree Protocol
  802.1D STP
  802.1w RSTP
• Loopback detection
• Link aggregation 802.3ad
  Max. number of groups per device - 8, 8 ports per group
• Port Mirroring
  One-to-One
  Many-to-One
  Based on the flow
• Cable diagnostics
• Customizable MDI/MDIX interface

VLAN
• 802.1Q tagged VLAN
• Group VLAN
  Max. 256 static VLAN
  Max. 4094 VIDs
• Management VLAN
• Asymmetric VLAN
• Auto Voice VLAN
  Max. 10 user defined OUI
  Max. 8 by default defined OUI
• Auto Surveillance VLAN

Quality of Service (QoS)
• 802.1p
• 4 line
• Processing Queue
  Strict
  Weighted Round Robin (WRR)
• CoS-based
  802.1p Priority Queues
  DSCP
• Bandwidth Management
  Based on the port (inbound / outbound, step up to 64 kbit / s for 10/100 Mbit / s and a step 1850 kbit / s to 1000 Mb / s)

Access Control Lists (ACL)
• Max. 50 member profiles
• Up to 240 incoming access rules
• ACL-based
  MAC-address
  IPv4-address
  ICMP/IGMP/TCP/UDP

Security
• 802.1X
  Access control based on port
• Port Security
  Support for up to 64 MAC-addresses per port
• Control of Broadcast / Multicast / Unicast storm
• Static MAC-address
• D-Link Safeguard Engine
• DHCP Server Screening
• Preventing ARP Spoofing Attacks
  Max. 64 records
• SSL
• Support v1/v2/v3

Management
• Web-GUI interface
• Compact CLI via Telnet
• Telnet-server
• Utility SmartConsole
• TFTP-client
• SNMP
  Support v1/v2/v3
• SNMP Trap
• Trap for SmartConsole Utility
• Syslog
• Max. 500 entries in the log
• Supports IPv4 log serve
• BootP / DHCP-client
• Setting the time
  SNTP
• LLDP (*)
• LLDP-MED (**)
• PoE based of time (*)

MIB
• 1213 MIB II
• 1493 Bridge MIB
• 1907 SNMP v2 MIB
• 1215 Trap Convention MIB
• 2233 Interface Group MIB
• D-Link Private MIB
• Power Ethernet-MIB (*)
• LLDP-MIB (*)

Compliance with RFC
• RFC 768 UDP
• RFC 783 TFTP-client
• RFC 791 IP
• RFC 792 ICMP
• RFC 793 TCP
• RFC 826 ARP
• RFC 854, 855, 856, 858 Telnet-server
• RFC 896 Congestion Control in TCP / IP Network
• RFC 903 Reverse Address Resolution Protocol
• RFC 951 BootP-client
• RFC 1155 MIB
• RFC 1157 SNMP v1
• RFC 1191 Path MTU Discovery
• RFC 1212 Concise MIB Definition
• RFC 1213 MIB II, IF MIB
• RFC 1215 Traps for use with the SNMP
• RFC 1239 Standard MIB
• RFC 1350 TFTP
• RFC 1493 Bridge MIB
• RFC 1519 CIDR
• RFC 1942 BootP / DHCP client
• RFC 1901, 1907, 1908 SNMP
• RFC 1945 HTTP/1.0
• RFC 2131, 1232 DHCP
• RFC 2138 RADIUS Authentication
• RFC 2233 Interface MIB
• RFC 2570, SNMP 2575
• RFC 2578 Structure of Management Information Version 2 (SMIv2)
• RFC 2647 802.1p
• RFC 3416, SNMP 3417
• RFC 3621 Power Ethernet (only model PoE)

Dimensions
• 19'' Metal casing

MTBF (hours)
• 197,343 hours

Acoustics
• 59.9 dB

Heat release
• 866.65 BTU/hour

Power input
• Internal universal power supply, 100 to 240 VAC, 50/60 Hz

Maximum power consumption
• 254 Watt (PoE enabled)
• 26.4 Watt (PoE disabled)

Dimensions (W x D x H)
• 440 x 250 x 44 mm

Cooling fans
• 3 Smart Fans (***)

Operating temperature
• From 0˚ to 40° C

Storage temperature
• From -10˚ To 70˚ C

Operating humidity
• 5 to 95% (no condensation)

Electromagnetic compatibility
• FCC Class A, CE Class A, VCCI Class A, IC, C-Tick

Security
• cUL, CE LVD

* Only DES-1210-08P/28P
** Only DES-1210-28P
*** Default fan speed is low. Fans are switched to high speed automatically at 33˚.