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October: Wireless access point placement
Our Day-to-Day Networking feature includes a cartoon (with Dave, the IT guy), a quick networking technical tip, and a calendar that lets you know what's happening on our site and in the networking industry. Print it out and tack it up in your cubicle... Networking checklist down
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Wireless network security testing
The abundance of wireless devices is making wireless networks -- both authorized and unauthorized -- more common. Attack your own wireless networks to find vulnerabilities before malicious hackers do. Security testing expert Kevin Beaver covers the t... Step-by-Step Guide
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Wireless network troubleshooting
Network operators often have the difficult task of troubleshooting wireless issues that arise not only on the wireless LAN but also with users and devices seeking access to it. Having knowledge of common hardware problems and configuration issues is ... Crash Course
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Wireless networking (CWNA)
Do you think you know a lot about wireless networking? Are you interested in taking the Certified Wireless Network Administrator (CWNA) exam? Test your knowledge with our 13-question quiz on wireless networking! Quiz
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Next steps in municipal wireless mesh networks
Strix Systems VP Nan Chen shares his take on the wireless mesh networking market and why he believes that wireless mesh networks are gaining so much momentum. TechColumn
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Using VLANs to compartmentalize WLAN traffic
Virtual LANs have long been used within enterprise networks to create logical workgroups, independent of physical location or LAN topology. This tip describes how to use these same VLAN capabilities, found in both wired and wireless devices, to tag a... School
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Overlay vs. embedded WIDS sensors
WIDSs rely on sensors to observe and forward traffic summaries to a central analysis server. Overlay WIDS use special-purpose sensors, dedicated to this monitoring task. Embedded WIDS use APs to monitor the WLAN in their spare time. This tip compares... School
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Wireless Hacks, 2nd Edition: Hack 51 -- Track wireless users
Hack 51 from Wireless Hacks, Second Edition, shows you how you can automatically keep a database of MAC-to-IP address mappings. Chapter Download
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Wireless Hacks, 2nd Edition: Hack 71 -- Wall off your wireless
Hack 71 from Wireless Hacks, Second Edition teaches you how to build a tiny wireless firewall using a wide range of PC hardware and a BSD firewall. Chapter Download
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Ten myths of Wi-Fi interference
Get an overview of WLAN interference concerns Tech Article
- See More: Essential Knowledge on Troubleshooting Wireless Networks
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Cisco Live London: Cisco debuts 4x4 MIMO wireless LAN access point
At Cisco Live London, Cisco introduced a three-stream 4x4 MIMO wireless LAN access point, the faster and longer-range Aironet 3600. News | 31 Jan 2012
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Ruckus joins real-time wireless channel selection fray
With real-time wireless channel selection, Ruckus is promising advanced RF management and optimization, but testing for the technology is still in order. News | 01 Dec 2011
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Hotspot 2.0 primer: Another step toward Wi-Fi/cellular integration
Hotspot 2.0 and the IEEE 802.11u protocol could allow mobile device users to securely roam between Wi-Fi and cellular networks without stopping to authenticate. Primer | 12 Oct 2011
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Wireless network troubleshooting: Connectivity problems
When you have trouble connecting a wireless client (a desktop, laptop, PDA, or phone) to an office network, these step-by-step debugging tips can help. Article | 15 Sep 2010
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Building an outdoor wireless LAN for a roving worksite
The crew of ABC's Extreme Makeover: Home Edition built a new Wi-Fi network with outdoor wireless access points. It travels with them across the country. Article | 11 Aug 2010
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Engineer's view: Wireless LAN performance and Wi-Fi client variation
Wi-Fi client variability affects wireless LAN performance and end user experience more than the industry wants you to know. A Dell laptop with Windows Vista might have inferior performance to a Lenovo laptop with Windows 7, even though both are 802.1... Interview | 08 Jun 2010
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Wi-Fi client variation obstructs wireless LAN performance management
Wireless LAN performance management requires better visibility into Wi-Fi clients because variation in client design affects how devices perform on the network. Mobile device management is a start, but wireless LAN testing tools can help, too. Article | 19 May 2010
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Scalable wireless LAN management tools simplify work, enable growth
For Oklahoma's second-largest school district, flexible and scalable wireless LAN management remains a critical part of its budding Wi-Fi network, which spans 96 buildings and is supported by just four networking pros. Article | 07 Apr 2010
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Beta testers praise Fluke's handheld WLAN troubleshooting device
Troubleshooting wireless LANs with laptop-based hardware is a clumsy process. Fluke Networks has introduced a new handheld WLAN troubleshooting device that has impressed beta testers and analysts alike. Article | 09 Mar 2010
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Multivendor wireless network management software: APs under one roof
Multivendor wireless network management software from Motorola may help networking pros who are juggling a patchwork of isolated wireless local area network (WLAN) hardware and management consoles. Article | 03 Mar 2010
- See More: News on Troubleshooting Wireless Networks
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Optimizing network performance for WLAN real-time applications
Transitioning to WLAN calls for network infrastructure upgrades, making supporting real-time applications tricky. This guide explains strategies for optimizing network performance. Tip
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Hadoop enables distributed ‘big data’ processing across clouds
The Hadoop framework enables distributed “big data” processing across servers that can improve application performance and offer up redundancy. Tip
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How to make enterprise wireless LAN work
The size of an enterprise WLAN brings new technical challenges. Now vendors are tackling issues of capacity management and automated provisioning for mobile clients. Tip
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Controlling embedded Wi-Fi device access
Enterprise IT shops are finding themselves using WPA2-Personal and other authentication methods to manage embedded Wi-Fi devices on the WLAN. Tip
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How to ensure WLAN performance optimization
To ensure wireless LAN performance optimization, you’ll need to implement new WLAN measurement and testing tools and conduct WLAN performance testing periodically even after network implementation. Tip
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Wireless LAN troubleshooting: How to get proactive
Wireless LAN troubleshooting and WLAN diagnostics can be done proactively with a new set of tools, including WLAN managers and distributed sensor platforms that track and problem solve on complex networks. Tip
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WLAN testing: Wireless intrusion prevention systems and centralized testing tools
WLAN testing has grown to accommodate the full-time surveillance necessary for super-speed 802.11n technology and mobile applications. Now WLAN testing can be done with AP-based wireless intrusion prevention systems and more. Tip
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How to troubleshoot Android Wi-Fi connection problems
Troubleshooting Android Wi-Fi connection problems has become an important element of enterprise wireless network connection troubleshooting as users of Android smartphones, tablets and Nook readers abound in the enterprise. Tip
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How to troubleshoot iPad and iPhone Wi-Fi connection problems
As iPhone OS Wi-Fi clients proliferate in the enterprise, IT must troubleshoot iPhone Wi-Fi connection problems and a host of other iPad WLAN problems. Here's how to solve basic iPad and iPhone Wi-Fi connection problems. Tip
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Integrated wireless network management systems work across infrastructures
Enterprises must implement integrated wireless network management systems that are user-aware and offer end-to-end visibility but also provide the drill-down capabilities of wired network management systems. Tip
- See More: Tips on Troubleshooting Wireless Networks
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When military radar causes fixed broadband wireless interference
Military radar may cause fixed broadband wireless interference. This expert tip explains tests and ideas to check if this is the case and how to address this interference. Answer
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Multiple access point configuration: Distinguish transmitted signals
Lisa Phifer explains multiple access point configuration when a device tries to differentiate transmitted signals from each point and explains potential issues. Answer
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Concurrent connection issues: Get wireless and wired to play nice
Wireless expert, Lisa Phifer explores concurrent connection issues and remedies with a printer requiring a wired connection plugged into a computer with a wireless connection to the Internet. Answer
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Access point problems running on PoE
Powering a wireless access point using Power over Ethernet is usually a straightforward process, but troubleshooting an issue can be tricky. Wireless expert Lisa Phifer steps through some possible solutions and where to look for additional help in de... Ask the Expert
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Extending 802.11n wireless LAN and connecting two WLANs
Extending 802.11 WLANs inside a large office can be done by bridging access points together, while outdoor mesh solutions can be used to connect two WLANs between buildings on a small campus. Ask the Expert
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iPad WLAN performance problems emerge
Right out fo the gate, business users are running into problems with iPad WLAN performance, wondering: Why won't my iPad stay connected to the WLAN? While it seems there may be some inherent iPad WLAN problems, there are a number of iPad WLAN trouble... Ask the Expert
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After VLAN configuration why can't computers in one gateway locate those in other gateways?
Ask the Expert
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How does rain affect wireless network data transfer?
In one of the wireless data acquisition installations, there is no data transfer during rain and mist. The wireless system works in 2.4 GHz frequency. What could be the cause of this? Ask the Expert
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Why is the 802.11g Wi-Fi throughput speed on my smartphone slow?
I recently purchased a smartphone with Wi-Fi (802.11g) but found video over Wi-Fi to be pretty choppy. I checked SpeedTest and I don't get anywhere near 54 Mbps when connected to Wi-Fi. Why not? Ask the Expert
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How can I increase throughput on my wireless mesh network?
We have installed a wireless mesh network that connects two access points (APs) to mesh nodes that are mounted at 25 meters high on 23 light poles. Poles are distributed around a container yard that measures 650 meters by 1,000 meters. There are six ... Ask the Expert
- See More: Expert Advice on Troubleshooting Wireless Networks
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iDEN (Integrated Digital Enhanced Network)
iDEN (Integrated Digital Enhanced Network) is a wireless technology from Motorola combining the capabilities of a digital cellular telephone, two-way radio, alphanumeric pager and data/fax modem in a single network. Word
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spectrum analyzer
A spectrum analyzer is a laboratory instrument that displays signal amplitude (strength) as a function of frequency... Word
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802.11a
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home agent
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radio frequency (RF, rf, orr.f.)
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repeater
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Wireless LAN management strategies
Implementing a WLAN is straightforward, but making sure it runs optimally can be challenging. Luckily, networking professionals can control and maintain their wireless networks by using well-known methodologies based on the OSI model. Here we outline... Audiocast
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Cisco Live London: Cisco debuts 4x4 MIMO wireless LAN access point
At Cisco Live London, Cisco introduced a three-stream 4x4 MIMO wireless LAN access point, the faster and longer-range Aironet 3600. News
-
Optimizing network performance for WLAN real-time applications
Transitioning to WLAN calls for network infrastructure upgrades, making supporting real-time applications tricky. This guide explains strategies for optimizing network performance. Tip
-
Hadoop enables distributed ‘big data’ processing across clouds
The Hadoop framework enables distributed “big data” processing across servers that can improve application performance and offer up redundancy. Tip
-
Ruckus joins real-time wireless channel selection fray
With real-time wireless channel selection, Ruckus is promising advanced RF management and optimization, but testing for the technology is still in order. News
-
How to make enterprise wireless LAN work
The size of an enterprise WLAN brings new technical challenges. Now vendors are tackling issues of capacity management and automated provisioning for mobile clients. Tip
-
Hotspot 2.0 primer: Another step toward Wi-Fi/cellular integration
Hotspot 2.0 and the IEEE 802.11u protocol could allow mobile device users to securely roam between Wi-Fi and cellular networks without stopping to authenticate. Primer
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When military radar causes fixed broadband wireless interference
Military radar may cause fixed broadband wireless interference. This expert tip explains tests and ideas to check if this is the case and how to address this interference. Answer
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Multiple access point configuration: Distinguish transmitted signals
Lisa Phifer explains multiple access point configuration when a device tries to differentiate transmitted signals from each point and explains potential issues. Answer
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Concurrent connection issues: Get wireless and wired to play nice
Wireless expert, Lisa Phifer explores concurrent connection issues and remedies with a printer requiring a wired connection plugged into a computer with a wireless connection to the Internet. Answer
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Controlling embedded Wi-Fi device access
Enterprise IT shops are finding themselves using WPA2-Personal and other authentication methods to manage embedded Wi-Fi devices on the WLAN. Tip
- See More: All on Troubleshooting Wireless Networks
About Troubleshooting Wireless Networks
Wireless network connectivity troubleshooting involves understanding the management tools and strategies used to reduce interference problems and improve wireless LAN performance and throughput. Whether you're dealing with Linksys appliances, Windows Vista or XP, this section provides material to help you fix your enterprise Wi-Fi.