Pluggables and cables in IT and OT networks. They’re a necessity. You wouldn’t drive an automobile without windshield wipers. You can’t fish for large mouth bass without a good monofilament line in that fishing pole. Selecting the right pluggables and cables for your network can be challenging. This blog will explore the importance of pluggables and cables, and guide how to choose the right ones for your network.
Pluggables, or SFP transceivers, plug into network devices and allow devices to communicate with one another via the cables. Cables transmit data between the connected devices such as a Network TAP and a monitoring tool (e.g., APM or SIEM). Choosing the right pluggables and cables can significantly impact the performance and reliability of your network.
There are hundreds of SFP, SFP+, QSFP+ pluggable transceivers. You need to choose the transceiver based on requirements like network speed, type, media, connector, and bandwidth.
If you’re considering using fiber, there is an array of choices before you. You’ll have to decide on the mode, the thickness, the wavelengths, and the connectors. There are two modes for fibers: single and multi. Single-mode fiber (SMF) has a smaller core than multimode fiber (MMF). Moreover, SMF’s wavelength is narrower. As a result, SMF has a higher bandwidth capability. It can also transmit data longer distances than MMF.
MMF has its advantages, though. Due to its bigger core and wider wavelengths, it gathers light better than SMF. While MMF isn’t suitable for long distance transmission, it can transport many different kinds of optic signals.
Copper has always and continues to play a vital role in networking and communication systems today. Not only is copper wiring the backbone of many existing enterprise and service provider networks, it is also the foundation of many industrial Ethernet environments.

Here are some factors to consider when selecting pluggables and cables:
When upgrading your network, it is crucial to consider the pluggables and cables you are using. Upgrading to faster network speeds, for example, may require upgrading your pluggables and cables. Using outdated pluggables and cables may result in bottlenecks, slower network speeds, and lost productivity. Investing in high-quality pluggables and cables can help future-proof your network and ensure optimal performance.
Here are some best practices for installing and maintaining pluggables and cables:
Garland Technology has a wide variety of pluggables and cables. Garland Technology’s Network TAPs and Network Packet Brokers do not require mandatory transceivers. Garland is a Multi-Source Agreement transceivers vendor. Any MSA compliant transceiver works in our products. This gives your flexibility and freedom to choose what works best for your environment.
Looking for the right pluggables and cables for your network? Join us for a brief network Design-IT consultation and demo. No obligation - it's what we love to do!
If the inline security tool goes off-line, the TAP will bypass the tool and automatically keep the link flowing. The Bypass TAP does this by sending heartbeat packets to the inline security tool. As long as the inline security tool is on-line, the heartbeat packets will be returned to the TAP, and the link traffic will continue to flow through the inline security tool.
If the heartbeat packets are not returned to the TAP (indicating that the inline security tool has gone off-line), the TAP will automatically 'bypass' the inline security tool and keep the link traffic flowing. The TAP also removes the heartbeat packets before sending the network traffic back onto the critical link.
While the TAP is in bypass mode, it continues to send heartbeat packets out to the inline security tool so that once the tool is back on-line, it will begin returning the heartbeat packets back to the TAP indicating that the tool is ready to go back to work. The TAP will then direct the network traffic back through the inline security tool along with the heartbeat packets placing the tool back inline.
Some of you may have noticed a flaw in the logic behind this solution! You say, “What if the TAP should fail because it is also in-line? Then the link will also fail!” The TAP would now be considered a point of failure. That is a good catch – but in our blog on Bypass vs. Failsafe, I explained that if a TAP were to fail or lose power, it must provide failsafe protection to the link it is attached to. So our network TAP will go into Failsafe mode keeping the link flowing.
Single point of failure: a risk to an IT network if one part of the system brings down a larger part of the entire system.
Heartbeat packet: a soft detection technology that monitors the health of inline appliances. Read the heartbeat packet blog here.
Critical link: the connection between two or more network devices or appliances that if the connection fails then the network is disrupted.