RTMP vs RTSP: A Complete Guide to Choosing the Right Streaming Protocol
RTMP vs RTSP As live-streaming and on-demand video become ubiquitous, the choice of streaming protocol plays a major role in...
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Knowledge Base
Practical technical articles, buying guides, and networking resources for teams evaluating, deploying, or maintaining enterprise hardware. Use this category to review product families, compatibility questions, replacement options, lifecycle planning, and deployment considerations before purchase.
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Understand PoE in 7 Questions: A Complete Guide to Power over Ethernet
In today’s era of the Internet of Everything, smart buildings, security surveillance, wireless networks, and IoT applications are everywhere. All...
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Dynamic VLAN: Definition, Benefits, and Best Practices
Before diving into dynamic vlan, let’s briefly review VLAN fundamentals and categories. A VLAN is a Layer-2 network segmentation technology...
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Managed vs Unmanaged Switch: The Complete 2026 Buying Guide & Technical Comparison
The main difference between a managed and unmanaged switch is configuration control. An unmanaged switch is a simple plug-and-play device...
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What Is a Layer 3 Switch? A 5-Minute Guide for Network Engineers
A Layer 3 switch (also called a multilayer switch) is a purpose-built hardware device that blends features of a traditional...
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RJ11 vs RJ45: Difference, Pinout, and Ethernet Use
RJ11 is mainly used for telephone lines, fax connections, and DSL line-side cabling. RJ45, in everyday networking language, usually refers...
Read MoreVMware Fusion 13.6 安装 Kali Linux 2025.2 ARM 报错
在苹果 Mac M4 设备上使用 VMware Fusion 安装 Kali Linux ARM 版本来是一件很平常的事，但当我尝试安装最新的 Kali Linux 2025.2 for ARM 时，他卡在了“Select and Install Software”步骤一直报错...
Read MoreHow to Configure Port Mirroring (SPAN) on Cisco Switch: A Practical, Step-by-Step Guide
Network administrators often need to inspect, analyze, or monitor network traffic for various reasons, such as troubleshooting connectivity issues, network...
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How to Find a Cisco Serial Number: Labels, Commands, and Tools
Quick answer: Find the serial number next to S/N, SN, or Serial Number on the chassis label. On a powered Cisco device, start with show inventory where...
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What Is a WAN Port on a Router? WAN vs LAN Explained
A WAN port on a router connects the router to the outside network, usually a modem, fiber ONT, ISP gateway,...
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What Does “Platform Event Trap” Mean on Cisco Switch?
Direct Answer A platform event trap (PET) is an out-of-band SNMP notification generated directly by a device’s Baseboard Management Controller...
Read MoreCisco PoE+ vs UPoE vs UPoE+ Difference & Selection Guide
Power over Ethernet (PoE) technology has become a critical part of modern network infrastructure, simplifying device installation by supplying power...
Read MoreCisco Catalyst 9300 Datasheet
The Catalyst 9300 Datasheet is your one-stop reference for understanding Cisco’s flagship stackable access switches. Whether you’re architecting a campus...
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