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Version 1.05 | 07/08/2025

Multi-G Ethernet Smart Managed Switch

DMS-1250 Series

Hardware Installation Guide

DMS-1250 Series Multi-G Ethernet Smart Managed Switch Hardware Installation Guide

Information in this document is subject to change without notice. Reproduction in any manner whatsoever, without the written

permission of D-Link Corporation, is strictly forbidden.

Trademarks used in this text: D-Link and the D-LINK logo are trademarks of D-Link Corporation; Microsoft and Windows are

registered trademarks of Microsoft Corporation.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or

their products. D-Link Corporation disclaims any proprietary interest in trademarks and trade names other than its own.

FCC Compliance Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not

cause harmful interference, and (2) this device must accept any interference received, including interference that may cause

undesired operation.

CE Mark Warning

This equipment is compliant with Class A of CISPR 32. In a residential environment, this equipment may cause radio interference.

VCCI Warning

この装置は、クラス A 機器です。この装置を住宅環境で使用すると電波妨害を引き起こすことがあります。この場合には使用者が

適切な対策を講ずるよう要求されることがあります。 VCCI－A

BSMI Notic

警告：為避免電磁干擾，本產品不應安裝或使用於住宅環境。

Safety Compliance

Warning: Class 1 Laser Product: When using a fiber optic media expansion module, never look at the transmit laser while it is

powered on. In addition, never look directly at the fiber TX port and fiber cable ends when they are powered on.

Avertissement: Produit Laser de Classe 1: Ne regardez jamais le laser tant qu’il est sous tension. Ne regardez jamais

directement le port TX (Tramsmission) à fibres optiques et les embouts de câbles à fibres optiques tant qu’ils sont sous tension.

Ensure to connect the power cord to a socket-outlet with earthing connection.

Veillez à brancher le cordon d'alimentation sur une prise de courant avec mise à la terre.

DMS-1250 Series Multi-G Ethernet Smart Managed Switch Hardware Installation Guide

iii

Table of Contents

Typographical Conventions .....................................................................................................................................iv

Notes and Cautions ................................................................................................................................................. iv

Switch Description ................................................................................................................................................... 1

Package Contents ................................................................................................................................................... 1

Features .................................................................................................................................................................. 1

Front Panel Components ........................................................................................................................................ 2

Ports ................................................................................................................................................................... 3

Reset Button ...................................................................................................................................................... 3

LED Indicators .................................................................................................................................................... 4

Port Functions ......................................................................................................................................................... 5

Rear Panel Components ......................................................................................................................................... 7

Side Panel Components .......................................................................................................................................... 8

Smart Fans ......................................................................................................................................................... 9

Installation Guidelines ........................................................................................................................................... 10

Installing the Switch without a Rack ...................................................................................................................... 10

Installing the Switch in a Standard 19" Rack ......................................................................................................... 11

Installing Transceivers into the Transceiver Ports ................................................................................................. 11

Power On (AC Power) ........................................................................................................................................... 12

Power Failure (AC Power)

............................................................................................................................... 12

Installing Power Cord Retainer ........................................................................................................................ 13

Mounting the Switch on a Wall ......................................................................................................................... 16

Switch to an End Node .......................................................................................................................................... 17

Switch to Another Switch....................................................................................................................................... 17

Switch to a Server ................................................................................................................................................. 18

Management Options ............................................................................................................................................ 19

Connecting to the Console Port ............................................................................................................................ 19

Connecting to the Switch for the First Time ..................................................................................................... 20

Creating a User Account .................................................................................................................................. 21

Configuring the IP Address .............................................................................................................................. 21

Connecting using SNMP ....................................................................................................................................... 22

Traps ................................................................................................................................................................ 22

Management Information Base (MIB) .............................................................................................................. 23

Introduction ............................................................................................................................................................ 24

Logging into the Web UI ........................................................................................................................................ 24

Web User Interface (Web UI) ................................................................................................................................ 26

Areas of the Web UI

......................................................................................................................................... 26

Web Pages ...................................................................................................................................................... 27

Appendix A - Technical Specifications .................................................................................................................. 28

General ................................................................................................................................................................. 28

Physical and Environmental .................................................................................................................................. 28

Performance .......................................................................................................................................................... 29

Safety Instructions ................................................................................................................................................. 30

Safety Cautions ................................................................................................................................................ 30

Consignes de sécurité ........................................................................................................................................... 31

Précautions de sécurité .................................................................................................................................... 31

General Precautions for Rack-Mountable Products .............................................................................................. 33

Protecting Against Electrostatic Discharge............................................................................................................ 34

Additional Info ........................................................................................................................................................ 35