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0
votes
1answer
36 views

Theoretical Wi-Fi decay

Is there a way to (theoretically at least) calculate the decay on bandwith of a Wifi related to the streght signal? For example, I know that I can theoretically expect 54Mbps of a 802.11g at 100%, ...
0
votes
0answers
53 views

Is there any way by which I can capture the wifi probe requests without using monitor mode?

For some reason, keeping the wifi interface in monitor mode on my machine is crashing it(its a raspberry pi, I'm assuming its crashing because of the amount of traffic being intercepted, but lets not ...
1
vote
1answer
43 views

What network/device info can be obtained from an iOS device connected to an 802.11u-enabled access point?

In order to perform some device security validations, I need canonical references to what device/hardware/network information can be obtained from an iOS device connected to an 802.11u-enabled access ...
1
vote
1answer
101 views

Is IEEE802.11 preamble a null frame?

I'd like to know if preamble is a null frame. One person has quoted such in this forum. But, in many other websites, it is given that it is some part of information needed to receive and transfer ...
3
votes
1answer
491 views

OpenVPN to host tap device having very large MTU

Question What is the minimum set of server and client configuration directives that I need in order to satisfy the following conditions? Virtual layer 2 ethernet network that will not be bridged ...
-1
votes
1answer
213 views

Reason for four frame types in Wireless LAN [closed]

So I was asked this question in an interview as a junior network specialist the other day: Give A reason why there is only one frame type in a wired LAN but four frame types in a wireless LAN. ...
-1
votes
1answer
621 views

How to calculate bandwidth limits per user on WiFi network

A typical 802.11g access point can provide around 25 Mbps of bandwidth. How is the bandwidth shared among the users? Furthermore, how many users can be served by a single access point using 802.11g ...
19
votes
4answers
1k views

Do wifi packets go directly node to node?

I have two nodes on a wireless network. Node A is streaming data to node B. Most of the time it works fine, but sometimes there is packet loss and the stream is interrupted. To improve performance ...
1
vote
1answer
5k views

What is the reason CSMA/CD can't be used on a wireless network? [closed]

I'm new to wireless networking and wondering why the same Collision Detection mechanisms used for Ethernet can't be applied to WiFi. I think I'm starting to understand, but not sure if I've got it: ...
6
votes
4answers
431 views

Wireless technology - which is better: more single radio APs or less dual radio APs?

We are currently talking to vendors of wireless solutions for a wireless deployment in a university campus with some 5000 students. One vendor is offering us a Cisco solution with a WLC 5508 ...
4
votes
3answers
85 views

Wireless LAN interference

I have set up at wireless LAN network in a small office, connected to a ADSL connection. Using a wired connection between a computer and the router, I get the expected ~8.5 Mbps down, and ~1 Mbps up. ...
2
votes
1answer
664 views

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 ...
5
votes
2answers
356 views

Using 4 wifi channels rather than 3

I have a wifi deployment with about 60 access points, currently limited to channels 1,6, and 11. This is a college campus, and the residence halls can get quite noisy, from an rf perspective. We ...
1
vote
1answer
152 views

for multiple access points on one SSID, should I broadcast SSID information from all of them?

Should I be broadcasting my SSID from multiple access points that are sharing the SSID and network segment, or should I only broadcast from one?
2
votes
2answers
129 views

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 ...
1
vote
0answers
196 views

How can I simulate 802.11 with WEP encryption on a wire or within a single system?

How can I simulate 802.11 with WEP encryption on a wire or within a single system? Thanks, Chenz
4
votes
2answers
239 views

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 ...
3
votes
3answers
730 views

Why slow (500-4500ms) ping times to google.com over Wi-Fi?

I regularly get ping times (to google.com) on my netbook over wireless (802.11) of: 500-4500ms for about half the time 100-150ms for the rest of the time. It seems to switch back and forth on the ...
8
votes
3answers
724 views

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 ...
0
votes
1answer
84 views

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 ...
12
votes
5answers
14k views

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)