D-Link DMS-1250-10SPL

L2 Smart Managed Switch

8 10/100/1000/2.5GBase-T PoE Ports + 2 10GBase-X SFP+ Ports

Package Contents

One DMS-1250-10SPL switch
One power adaptor
One wall and rack mounting kit
Operational documentation

Device Interfaces

Port	Description
10/100/1000/2.5GBase-T PoE ports	8 10/100/1000/2.5GBase-T PoE ports (10/100/1000/2500 Mbps connection speed).
10GBase-X SFP+ ports	2 10GBase-X SFP+ ports (1000/10000 Mbps connection speed).

LED Indicators

LED	Status	Description
Power	Solid green	The switch is powered on.
	Light off	The switch is powered off.
PoE Max	Solid amber	Total power output exceeds Guard Band threshold. The PD will be denied based on port priority or other PoE rules.
	Blinking amber	When the total power output becomes sufficient and allows to connect more PDs (more than 7 Watts), PoE MAX LED will blink 5 seconds.
	Light off	The PoE power is sufficient and below the guard band threshold.
LED Mode: Link	Solid green	LEDs for ports 1-8 are in Link Mode (Link/Activity/Speed).
LED Mode: PoE	Solid green	LEDs for ports 1-8 are in PoE Mode (PoE OK/PoE Fail).
Link/Activity/Speed (per port 1-8)	Solid blue	There is a secure 2500 Mbps connection at the port.
	Blinking blue	There is reception or transmission occurring at the port.
	Solid green	There is a secure 1000 Mbps connection at the port.
	Blinking green	There is reception or transmission occurring at the port.
	Solid amber	There is a secure 10/100 Mbps connection at the port.
	Blinking amber	There is reception or transmission occurring at the port.
	Light off	Link down or no link.
Link/Activity/Speed (per port 9-10)	Solid green	There is a secure 10 Gbps connection at the port.
	Blinking green	There is reception or transmission occurring at the port.
	Solid amber	There is a secure 1000 Mbps connection at the port.
	Blinking amber	There is reception or transmission occurring at the port.
	Light off	Link down or no link.
PoE OK/PoE Fail (per PoE port)	Solid green	Power feeding.
	Solid amber	Error condition.
	Light off	No power feeding.

Installation Guidelines

This section provides hardware installation guidelines for safely installing the Switch in the appropriate environment.

Visually inspect the power adaptor and ensure it is fully secured to the Switch's power connector and the electrical outlet.
Install the Switch in a cool, dry place within acceptable operating temperature and humidity ranges.
Install the Switch in a site free from strong electromagnetic field generators, motors, vibration, dust, and direct sunlight.

Installing the Switch without a Rack

Install the Switch on a sturdy, level surface that can support its weight. Do not place heavy objects on the Switch. Ensure proper heat dissipation and adequate ventilation. Leave at least 10 cm (4 inches) of space at the front, sides, and rear for ventilation.

Installing the Switch in a Rack

Mount the Switch in a rack using the provided mounting brackets. Fasten the brackets to the sides of the Switch using the screws provided.

Diagram Description: Figure 1 shows how to attach rack-mount brackets to the sides of the switch. Figure 2 illustrates the switch being installed and secured in a server rack.

Operating Environment: The switch is designed for operation in dry, clean, dust-free, and well-ventilated areas, away from heat sources, high humidity, or direct sunlight. Recommended operating temperature is 0 to +40°C. Ensure ventilation openings are unobstructed.

Installing Transceivers into the Transceiver Ports

The Switch features Enhanced Small Form-factor Pluggable (SFP+) ports for connecting networking devices that do not support standard RJ-45 connections. These ports are typically used for optical fiber connections, enabling communication over great distances (up to several kilometers), whereas RJ-45 connections are limited to 100 meters.

Diagram Description: Figure 3 shows a close-up of the switch's front panel, highlighting the SFP+ ports and demonstrating how to insert a transceiver.

Powering and Management

Power On (DC Power)

Plug the DC power adaptor into the switch's power socket and the local power source outlet.

Power Failure (DC Power)

In case of a power failure, unplug the power adaptor as a precaution. After power is restored, plug the adaptor back into the switch.

Management Options

The Switch can be managed via multiple platforms: Command Line Interface (CLI), SNMP-based Management, and Web User Interface (Web UI).

Command Line Interface (CLI)

Management can be done via Telnet connection to any of the LAN ports.

SNMP-based Management

Use an SNMP-compatible console program. The switch supports SNMP v1, SNMPv2c, and SNMPv3.

Web User Interface (Web UI)

The Web UI offers a graphical interface for configuration and management, accessible from any computer with web browsing software.

Logging into the Web UI

Supported Web browsers: Microsoft Internet Explorer 8 or above, Firefox, Google Chrome, Safari, Microsoft Edge.

To access the Web UI, open a web browser, enter the switch's IP address (default: 10.90.90.90 with subnet mask 255.0.0.0 for LAN ports), and press ENTER. Use default credentials: User Name 'admin', Password 'admin'. Click Login.

Diagram Description: Figure 4 shows the Web UI login window with fields for User Name, Password, Language selection, and Login/Reset buttons.

Technical Specifications

Hardware

Feature	Specification
RAM	512 MB
Flash Memory	32 MB
Interfaces	8 x 10/100/1000/2.5GBase-T PoE ports, 2 x 10GBase-X SFP+ ports
Indicators	Power, Link/Activity/Speed (per port), PoE OK/PoE Fail (per PoE port), PoE Max, LED Mode (Link/PoE)
Buttons	Reset Button, Mode Button
Power Connector	DC power adaptor connector

Functionality

Feature	Specification
Standards and Functions	IEEE 802.3 10Base-T, IEEE 802.3u 100Base-TX, IEEE 802.3ab 1000Base-T, IEEE 802.3bz 2.5GBase-T, IEEE 802.3z 1000Base-X, IEEE 802.3ae 10GBase-X, IEEE 802.3az Energy-Efficient Ethernet, Flow Control IEEE 802.3x, Auto MDI/MDIX on all copper ports

Performance

Feature	Specification
Switching Capacity	80 Gbps
Forwarding Method	Store-and-forward
MAC Address Table Size	16K entries
Max Forwarding Rate	59.53 Mpps (64-byte packets)
Static MAC Addresses	256 entries
Packet Buffer	1.5 MB
Jumbo Frame	12,288 bytes

PoE

Feature	Specification
PoE Standard	IEEE 802.3af, IEEE 802.3at, IEEE 802.3bt, Perpetual PoE, Fast PoE
PoE Ports	Ports 1-8
PoE Power Budget	120 W (max. 60 W on ports PoE 1-2, max. 30 W on ports PoE 3-8)

Physical Parameters

Feature	Specification
Dimensions (L x W x H)	210 x 210 x 44 mm
Weight	1.34 kg

Operating Conditions

Feature	Specification
Power	External power adaptor: Output: 54 V DC, 2.78 A
Max Power Consumption	147 W (PoE enabled), 18.84 W (PoE disabled)
Power Consumption (Standby)	5.14 W
Heat Dissipation	146.91 W (501.58 BTU/hour)
MTBF (hours)	591,612.47
Noise Level	0 dB
Electrostatic Discharge Protection	Up to 6 kV on all copper ports (IEC61000-4-5)
Ventilation System	Passive
Temperature	Operating: 0 to 40°C, Storage: -20 to 70°C
Humidity	Operating: 0% to 95% non-condensing, Storage: 0% to 95% non-condensing

Other

Feature	Specification
EMI	CE Class A, VCCI Class A, FCC Class A, IC, BSMI
Safety	CB, UL, BSMI

Technical Support

Software updates and documentation are available on the D-Link website. D-Link provides free support to customers during the warranty period. Customers can contact the D-Link technical support group by phone or via the Internet.

D-Link technical support operates 24/7, daily, except for official holidays. Calls are free within Russia.

D-Link Technical Support: 8-800-700-5465

Internet Support: http://www.dlink.ru

Support Email: support@dlink.ru

Manufacturer: D-Link Corporation, 11494, Taihwan, Taipei, Neihu District, Sint Hu 3rd Road, No. 289

Authorized Representative/Importer: OOO “D-Link Trade”, 390010, Ryazan, pr. Shabulina, d.16. Tel: +7 (4912) 575-305

Office Addresses:

Russia: Moscow, Grafsky pereulok, 14. Tel: +7 (495) 744-00-99. Email: mail@dlink.ru
Belarus: Minsk, Nezavisimosti pr., 169. Tel: +375 (17) 218-13-65. Email: support@dlink.by
Kazakhstan: Almaty, Kurmangazy st., 143. Tel: +7 (727) 378-55-90. Email: almaty@dlink.ru

Certifications: EAC, TPY

Version: 1.1, 2025-08-14

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