Network infrastructure
Network hardware and physical appliances, such as routers, switches, gateways, hubs and bridges, serve as the vital foundation of network infrastructure. Common network protocols and more emergent network software also play major roles in any architecture. While networking has shifted to software-centric principles, see how traditional network infrastructure keeps pace.
Top Stories
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Tip
05 Jun 2026
A primer on hyperscale data centers
Hyperscale data centers can hold thousands of servers and process much more data than an enterprise facility. However, they can be difficult to build and maintain. Continue Reading
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Feature
02 Jun 2026
Top SAN products powering enterprise IT strategy
Selecting the right SAN products is vital to enabling a modern data strategy that drives operational efficiency and enterprise ROI. Continue Reading
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Answer
25 Nov 2006
What are the fundamental principles of CDMA?
In this Q&A, our expert, Lindi Horton gives us an explanation of what CDMA is and what some of its fundamental principles are. Continue Reading
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Tip
20 Nov 2006
IP addressing and subnetting: Calculate a subnet mask using the subnet's formula
IP addressing and subnetting are an important part of networks. Learn how the subnet's formula works and why it's important to know how to calculate the subnet mask "longhand." Continue Reading
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Tip
28 Aug 2006
Duplex mismatch
What is duplex, and what is the difference between half and full duplex? What is a duplex mismatch? How can autonegotiation help or hurt your network? How can you resolve duplex conflicts? In this tip, David Davis helps networking engineers and newcomers understand the issues behind one of the most troublesome problems plaguing today's networks. Continue Reading
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Definition
07 Aug 2006
Kbps (kilobits per second)
In the U.S., Kbps stands for kilobits per second (thousands of bits per second) and is a measure of bandwidth (the amount of data that can flow in a given time) on a data transmission medium. Continue Reading
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Feature
10 Apr 2006
Wi-Fi vulnerability assessment checklist
Vulnerability assessments can help you find and fix WLAN weaknesses before attackers take advantage of them. But where do you start? What should you look for? Have you covered all the bases? This checklist will help to answer these questions. Continue Reading
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Definition
21 Sep 2005
well-known port numbers
The well-known port numbers are the port numbers that are reserved for assignment by the Internet Corporation for Assigned Names and Numbers (ICANN) for use by the application end points that communicate using the Internet's Transmission Control Protocol (TCP) or the User Datagram Protocol (UDP). Continue Reading
- Answer 20 Jul 2005
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Tip
17 Mar 2005
Focus Windows port scanning with the netscan command
How to use the netscan command to focus Windows port scanning. Continue Reading
- Answer 17 Mar 2005
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Answer
11 Jan 2005
Can you assign an IP address ending in .0 or .255?
Learn how to assign an IP address ending in .0 or .255 from networking fundamentals expert Chris Partsenidis in this Q&A. Continue Reading
- Answer 22 Nov 2004
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Tutorial
07 Oct 2004
Routing First-Step: IP header format
Routing and Internet addressing are two important concepts involved in networking. Routing First-Step covers the basics of routing in clear, easy-to-understand language. Continue Reading
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Tutorial
26 Jul 2004
Five critical planning steps for wireless LANs, Step 5: Manageability -- Switching to WLAN switches
This article explains how WLAN switches will help to alleviate manageability issues. Continue Reading
- Answer 20 Jul 2004
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