Changes between Version 16 and Version 17 of Internal/RunningDemos


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Timestamp:
Dec 23, 2005, 6:08:19 PM (19 years ago)
Author:
kishore
Comment:

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  • Internal/RunningDemos

    v16 v17  
    1111The objective of this demo is to show the failure of current implementations of IEEE 802.11 infrastructure networks in supporting a large number (O(10)) of clients. The cumulative throughput at the access point (AP) is the measured and it is shown that beyond a certain number of clients, there is a sharp drop rather than graceful degradation. It is hypothesized that the 802.11 bit-rate adaptation algorithm is the primary culprit for this behavior - the algorithm does not differentiate between collision-based packet loss and packet loss due to poor channel conditions. It incorrectly infers collision-based loss as an indication to drop the bit-rate, resulting in the sharp drop in cumulative throughput.
    1212
    13 === Preliminaries ===
     13=== Steps to Execute Demo ===
    1414
    15 1. '''Image name'''[[BR]]baseline.ndz node image file must be used. Resides on repository2:/export/orbit/image. 
    16    (a) Log onto console.sb9.orbit-lab.org using ssh (see HowToGetStarted).
    17    (b) Turn off all nodes using the following command:
     151. '''Image name''' -- baseline.ndz node image file must be used. Resides on repository2:/export/orbit/image. 
     16   a. Log onto console.sb9.orbit-lab.org using ssh (see HowToGetStarted).
     17   b. Turn off all nodes using the following command:
    1818{{{
    1919wget -O - 'http://cmc:5012/allOff'
    2020}}}
    21    (c) Execute the following command on console.sb9.
     21   c. Execute the following command on console.sb9.
    2222{{{
    2323imageNodes atheros baseline.ndz
    2424}}}
    2525
    26    
    27 2. '''nodeHandler scripts'''
     262. '''nodeHandler scripts''' -- execute following command on console.sb9
     27{{{
     28nodehandler -k test:exp:conf-room-demo
     29}}}
    2830
    29313. '''Display machine'''
     32On the display machine, point your Internet Explorer or Mozilla Firefox browser to http://sb9.orbit-lab.org
    3033
    3134== Streaming video demo ==