Browsing articles tagged with "802.11 - Admins Goodies"
May 24, 2012
tom

How do mixed wireless clients (b/g/n) effect total throughput of an access point?

Say you are planning a network based around access points that support the full range of 802.11 protocols on 2.4Ghz(b/g/n). How will a mixed set of clients effect the total throughput possible through the access point? For example, say we have the following scenario: 1 Access Point 1 b client with an 11 Mbps connection transmitting 5 Mbps 1 n client with a 135 Mbps connection can transmit ? Mbps Can the second client transmit [...]

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Aug 23, 2011
tom

What is the maximum length of a wifi access point’s SSID?

I was wondering if anybody knew what the maximum string length of a browser’s SSID is or where I could go to look for that sort of information. (From a spec of some sort) According to the documentation of the standard, the length of an SSID should be a maximum of 32 characters (32 octets, normally ASCII letters and digits, though the standard itself doesn’t exclude values). Some access point/router firmware versions use null-terminated strings [...]

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Aug 21, 2011
tom

Open VPN with win XP and wireless card

I’m trying to run an OpenVPN VPN on an XP box. It works fine when I have a physical connection plugged in to the wired Ethernet port. However, when I try to run it with the wireless card as the primary interface I get a new connection created in my control panel that refuses to connect. Anyone have ideas? try using tcp instead of udp. A friend of mine got some trouble with wireless connection [...]

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Aug 19, 2011
tom

Load testing wireless LANs

Anyone have any suggestions for methods of load-testing wireless networks for enterprise network deployments? We’ve got a wide array of different wireless worst-case scenarios to support. rooms with either nobody or 300 people, each of whom have 1-3 wireless devices and they want to use all of them, potentially at once (large classrooms) buildings with lots of people who want to bit-torrent the latest episodes of “my so called life” or “shania twain” albums using [...]

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Aug 13, 2011
tom

How can I offer 2.4 ghz wi-fi in a building with strong interference?

I have a few access points on one floor of a high-rise building. They support both 2.4 ghz and 5ghz. When I used 2.4 ghz, the channel management features did not seem to work and we experienced frequent problems. When I switched to 5 ghz the problems went away. However, the 5ghz standard is much less accepted. And when clients come in, they want 2.4ghz. What can I do? How can I offer 2.4ghz wi-fi [...]

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Aug 8, 2011
tom

Tool to troubleshoot wireless connections

Having a lot of issues with a wireless network with multiple APs sharing the same SSID. I have a tool I use on my android phone (wifianalyzer) that is helpful, but I need a more comprehensive set of diagnostics that would run (preferably) from a windows laptop. Are there any useful open source or free tools for this? Thanks! FYI, multiple APs are supposed to share the same SSID, provided they are connected to the [...]

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