Tag: Networking
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How to Determine the Cause of a Disconnected UniFi Device
When a UniFi device shows as disconnected or offline in the UniFi Network application, it doesn’t always mean the users connected to that device are experiencing internet issues. Understanding the root cause is key to fixing the problem and preventing future outages. Does “Disconnected” Mean the Internet is Down? Not always. A disconnected device simply…
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UniFi SSH Commands Guide
Troubleshooting, adoption, and maintenance via command line Accessing UniFi devices via SSH is one of the most powerful ways to troubleshoot issues, inspect device settings, adopt devices manually, or perform advanced configuration and reset tasks. This guide walks you through how to SSH into a UniFi device and lists the most useful SSH commands with…
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UniFi Isolated: What It Means and How to Fix It
When managing a UniFi network, you may notice a device listed as “Isolated.” This status can be confusing, especially if the device seems to be working. In this guide, we’ll explain what “Isolated” means in UniFi, why it happens, and how to fix it for both wired and wireless (mesh) access points. What Does “Isolated”…
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UniFi Devices: Which Support Active PoE and Passive PoE?
A complete and current overview of which UniFi devices support various PoE types, including 802.3af, 802.3at, 802.3bt, and 24V Passive PoE. Understanding PoE UniFi devices use various PoE types: ⚠️ 24V passive PoE is not interchangeable with 802.3af/at/bt. Powering devices with incompatible voltage can permanently damage them. UniFi Access Points Legacy 24V Passive PoE APs…
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Troubleshooting Wi-Fi Connection Issues: A Comprehensive Guide
In today’s world, a stable and reliable Wi-Fi connection is essential for work, entertainment, and communication. However, there are times when you might find yourself unable to connect to Wi-Fi, which can be frustrating and disruptive. This guide provides a comprehensive approach to troubleshooting common Wi-Fi connection issues, helping you identify and resolve the problem…
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Why Google DNS Might Be Breaking Your Network (And How to Fix It)
If you’ve been using Google DNS for your network, especially in guest networks, you might have noticed something strange lately: slowdowns, errors, and frustrated users. What’s going on? The culprit might be something you never expected—Google DNS rate limiting. Yes, even the mighty Google DNS isn’t immune to putting the brakes on your network if…
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DNS Troubleshooting: A Comprehensive Guide to Resolving DNS Issues
The Domain Name System (DNS) is a critical component of the internet that translates human-friendly domain names (like example.com) into IP addresses that computers use to identify each other on the network. When DNS issues arise, they can disrupt your ability to access websites, send emails, or use online services. This guide provides a comprehensive…
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6 Common Spanning Tree Problems and How to Avoid Them
Spanning Tree Protocol (STP) is crucial in preventing network loops, which can cause widespread disruptions in Ethernet networks. However, to harness the full benefits of STP, it must be configured correctly. Misconfigurations can lead to performance issues, network instability, and even outages. This article explores six common spanning tree problems and how to fix them,…
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How to Make a T1 Loopback: A Step-by-Step Guide
Introduction A T1 loopback is an essential tool used in telecommunications to test and troubleshoot T1 lines. Creating your own T1 loopback cable is a straightforward process that can save time and money, especially when you need to diagnose issues on the go. This guide will walk you through the steps to make a T1…
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Troubleshooting a Down Network: Step-by-Step Guide
When a network goes down, it can bring operations to a halt, making it critical to identify and resolve the issue as quickly as possible. Effective troubleshooting involves a systematic approach, starting with the most basic checks and moving on to more complex diagnostics. This article provides a comprehensive step-by-step guide to troubleshooting a down…
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