DDM or Digital Diagnostic Monitoring is a technology that can test the functionality of a device in real time. In the market, we can buy devices with or without DDM. However, due to the advantages offered by this technology, it is always a good choice to choose DDM-enabled electronic and networking equipment, such as Ethernet switches. Alert messages are generated if the functionality or setup parameters of the DDM-enabled device are changed. Therefore, it is worth spending the extra money to purchase an Ethernet switch with DDM capabilities. This article discusses the details of DDM in Ethernet switches and its usefulness when purchasing the equipment.

What is an Ethernet switch and how does it work?

An Ethernet switch is an important connection device that plays the role of a central hub in a wired network. Also known as a network switch, its ports connect computers, cameras, printers, and other devices on a private network. We can connect to the internet by connecting this Ethernet switch to the router via cable. Therefore, it can be used in private or business networks as well as Internet connections as required.

Simply put, it serves as the central communication interface for all connected devices on the network, transporting data packets from one LAN port to another. Every Ethernet device has a unique ID, depending on the manufacturer. It is used by switches to identify connections between devices. It creates a database to help correctly map the source and destination addresses of packets, and can combine routers and switches into a single device. In addition, multiple Ethernet switches can be connected to form a large network.

More information about DDM and its benefits

It is important that each device on the network performs its task accurately to get the correct output. Therefore, functional monitoring of equipment is an important aspect, and DDM does exactly this. It monitors key parameters such as input and output power, voltage, temperature, etc. The transmit and receive ports of the switch can be monitored in real time. DDM has several advantages, some of which are:

• The real-time monitoring function reduces the workload of network administrators in locating faults and even maintaining them.
• With this feature, a reasonable estimate of the device's service life can be made.
• There is no need to shut down the network while monitoring equipment, so work can continue without interruption.
• It identifies issues related to operating temperature and voltage before they get out of control so they can be repaired promptly. This saves costs and production time associated with damage.
• In a way, this extends the life of the network, making it more seamless than ever and helping to prevent crashes and failures.
• DDM also checks the compatibility of equipment with the working environment according to set standards, helping to optimize equipment performance.
• Troubleshooting can be done remotely even from another location.

Application of digital diagnostic monitoring in Ethernet switches

Ethernet switches are used as connectivity interfaces in many real-time and mission-critical applications. Therefore, it is crucial that they deliver the right output at the right time. Some applications of Ethernet switches include traffic control systems and traffic lights on long-distance networks. Such systems connected through distributed networks may sometimes face connectivity issues due to various reasons such as wrong cable panel connections, road excavations, etc. In this case, the DDM feature can easily identify the problem and the administrator or engineer can remotely access the switch management screen from any location. This screen displays the following parameters:

• SFP module current temperature and voltage and other functions
• Signal strength for data transmission over cables
• For fiber optic cables, the amount of light transmitted and received
• Current supplied to the transmitter

After checking all these parameters on the screen, engineers can make informed decisions and perform preventive maintenance, check signal attenuation, check the optical path for deterioration, and more. Best of all, all these parameters can be checked as part of regular maintenance to prevent any further damage.

If you are looking for an Ethernet switch or any other network device to enhance transfer rates and connectivity, make sure to choose a device that supports DDM. Also, make sure to source your switches from authorized and certified manufacturers and suppliers.