Changes between Version 8 and Version 9 of WiMAX/WiMAX-Tutorial/Dash/04


Ignore:
Timestamp:
07/22/13 20:09:27 (6 years ago)
Author:
Fraida Fund
Comment:

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  • WiMAX/WiMAX-Tutorial/Dash/04

    v8 v9  
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    71 == Creating and Loading a Disk Image ==
    72 
    73 To prepare his experiment, he loaded a baseline image onto a node on ORBIT's Outdoor.
    74 
    75 
    76 > Try it yourself another time: To load a baseline image onto a node, e.g. node1-3 on ORBIT's Outdoor, run [[br]]
    77 > {{{omf load -i baseline.ndz -t node1-3.outdoor.orbit-lab.org }}}
    78 [[br]]
    79 Then he installed all the applications he needs on the node, did any modifications necessary to the coded and saved the disk image.
    80 
    81 > Try it yourself another time: To save a disk image from a node, e.g. node1-3 on ORBIT's Outdoor, run [[br]]
    82 > {{{omf save -n node1-3.outdoor.orbit-lab.org}}}
    83 [[br]]
    84 When the image saving process concluded, it reported that his disk image had been saved and gave the name of the image. Now, when he wants to run his experiment, he will load his disk image onto the nodes he has reserved:
    85 
    86 On the client node:
    87 
    88 {{{
    89 omf load -i gec17_dash_policy_X.ndz -t node1-3.outdoor.orbit-lab.org
    90 }}}
    91 
    92 >Note:
    93 > X is either 1, 2, or 3. Here we will implement 3 different policies. These 3 policies are hardwired to the VLC code.
    94 >So, we have created 3 different images which need to be loaded when the experimenter needs to test either of them.
    95 
    96 
    97 On the server node:
    98 {{{
    99 omf load -i gec17_dash_apache.ndz -t node1-5.outdoor.orbit-lab.org
    100 }}}
    101 
    102 [[br]]
    103 
    104 > Tip: If any node doesn't seem to be checking in, e.g. you see output like this: [[br]]
    105 > [[br]]
    106 > {{{INFO stdlib: Waiting for nodes (Up/Down/Total): 2/1/3 - (still down: node1-5.outdoor.orbit-lab.org) [140 sec.]}}}  [[br]]
    107 > [[br]]
    108 > try opening another SSH session to the outdoor console and resetting the misbehaving node: [[br]]
    109 > {{{omf tell -a reset -t node1-5.outdoor.orbit-lab.org}}} [[br]]
    110  [[br]]
    111 
    112 == Clearing Experiment Settings ==
    113 
    114 In addition to loading a fresh disk image, additional steps must be taken to restore the wireless environment to its default state. These commands are run from the console on Outdoor to
    115 reset all of the base station and attenuation settings:
    116 
    117 {{{
    118 wget -qO- "http://wimaxrf:5004/wimaxrf/bs/default"
    119 wget -qO- "http://wimaxrf:5004/wimaxrf/bs/restart"
    120 wget -qO- "http://wimaxrf:5004/wimaxrf/datapath/config/load?name=default"
    121 }}}
    122 
    123 
    12471
    12572'''[wiki:WiMAX/WiMAX-Tutorial/Dash/05 Next]'''