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Wifi Nigel: October 2014
http://wifinigel.blogspot.com/2014_10_01_archive.html
5GHz in the UK. Thursday, 2 October 2014. Survey For Your WiFi Clients. In addition, the pre-survey questionnaire will also request information from the customer about the requirements of the new network to be installed. This will generally include information such as coverage requirements, capacity requirements, service requirements (e.g. voice, data, RTLS) and information about the types of wireless client to be used on the new WiFi network. The graphic below shows how part of the building has been sur...
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Wifi Nigel: November 2014
http://wifinigel.blogspot.com/2014_11_01_archive.html
5GHz in the UK. Wednesday, 12 November 2014. Effect of Transmit Power Changes on AP Cell Sizing. Quite a few articles, web pages and wireless LAN text books quote the following rule of thumb when considering the effect of increasing the transmit power of an access point. For every increase of 6 dB, the coverage distance doubles. For every decrease of 6 dB, the coverage distance is cut in half. Whilst it is quite useful to remember when. Free Space Path Loss (FSPL) Formula. For our purposes, we need to un...
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Wifi Nigel: WLAN Packet Capture
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5GHz in the UK. Here are a few articles I've put together that fall under the common subject area of packet capture in wireless LANs, I'm not a huge expert in this area, but I like to be able to find my notes easily for the times when I do have to roll my sleeves up :). What are Radio Tap Headers? WLAN Packet Capture - Filtering Out Bad FCS Frames. WLAN Packet Capture - Frame Colorization in Wireshark. WLAN Packet Capture - Wi-Fi Filter Categories in Wireshark. Subscribe to: Posts (Atom).
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Wifi Nigel: January 2015
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5GHz in the UK. Tuesday, 27 January 2015. 5GHz in the UK White Paper (Version 2). I decided it was time to update my white paper detailing the use of the 5GHz band here in the UK for wireless LANs. I've tidied a few things up and added some information around 802.11ac channel planning within the constraints of UK 5GHz spectrum. You can download the whitepaper from here:. Sunday, 25 January 2015. Cisco AP Channel Utilization. To a very useful article. That gives more background on this subject. For a whil...
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Wifi Nigel: How Fast Is My Wi-Fi Client?
http://wifinigel.blogspot.com/2016/02/how-fast-is-my-wi-fi-client.html
5GHz in the UK. Tuesday, 9 February 2016. How Fast Is My Wi-Fi Client? In the Wi-Fi For Beginners. Podcast, I've spent a lot of time talking about WLAN clients. The discussion about WLAN clients is fairly extensive and spans a number of episodes. However, you may be wondering how you actually find out about a clients' capabilities. In this article we take a quick look at a number of methods to determine the capabilities of devices that you may be using (or plan to use) on your WLAN. There's one piece of ...
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Wifi Nigel: Microsoft NPS Articles
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5GHz in the UK. Here are some articles I have written about using Microsoft NPS as an authentication server for wireless networks:. Microsoft NPS as a RADIUS Server for WiFi Networks: SSID Filtering. Microsoft NPS as a RADIUS Server for WiFi Networks: Dynamic VLAN Assignment. Microsoft NPS as a RADIUS Server for WiFi Networks: Self Signed Certificate. Microsoft NPS as a RADIUS Server for WiFi Networks: RADIUS Client Limits. Here are some other must-read articles related to NPS:. Subscribe to: Posts (Atom).
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Wifi Nigel: September 2014
http://wifinigel.blogspot.com/2014_09_01_archive.html
5GHz in the UK. Saturday, 27 September 2014. Calibrating a Wireless LAN Survey Plan. One of the most important steps in completing a WiFi network survey using a professional survey tool is to ensure that you have a correctly calibrated the floor plans used to conduct the survey. Without this step, your survey may be inaccurate or, at worst, worthless. In this article we look at why this is important, together with the right (and wrong) way to do it. The purpose of importing a floor-plan is to allow radio...
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Wifi Nigel: July 2014
http://wifinigel.blogspot.com/2014_07_01_archive.html
5GHz in the UK. Friday, 4 July 2014. Cisco Access Points: Which Power Levels Does My AP Support? Cisco APs support a number of discrete transmit power levels which are 3dB apart. They are usually numbered levels 1 (highest) down to 7 or 6 (lowest). The numbers of levels and the transmit power values assigned vary between models and regions. The quickest way to determine the levels supported by your AP is to logon to your WLC and execute the following CLI command:. Show ap config 802.11b ap-name. The exam...
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Wifi Nigel: February 2016
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5GHz in the UK. Friday, 26 February 2016. 8023af Is Dead (For Surveys). I’ve recently been involved with a project that has brought me into contact with a number of wireless engineers who are performing WLAN survey work using the traditional “AP on a stick” (APOAS) survey. Method. Yes, there are plenty of people out there who still prefer this method, or have customers who demand it. This was sufficient for many APs until the advent of the next generation 802.11ac (“Gigabit Wireless”), ba...With the emer...
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Wifi Nigel: RF Calculators
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5GHz in the UK. Here are a few RF Wi-Fi calculators and look-up tables I have put together:. DBm to mW convertor. Mw to dB convertor. Free Space Loss calculator. Subscribe to: Posts (Atom). WiFi Nigel (CWNE #135). Join Me For Wi-Fi Training. Join me and Cucumber Wi-Fi. On 1st March 2017 for a one day training course to enable you to get the best out of your Wi-Fi network! Wi-Fi For Beginners Podcast. Want to Become a Wi-Fi Expert? CWAP Study Notes Files. Wi-Fi For Beginners Podcast.
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