Community-Lab introduction

Differences From Artifact [dba7698cbe]:

• File script.txt — part of check-in [de73cb8db1] at 2012-09-23 11:51:59 on branch trunk — Added slide with zooming for experiment interaction example. (user: ivan, size: 11998) [annotate] [blame] [check-ins using]

To Artifact [2552d02c56]:

• File script.txt — part of check-in [542baf991d] at 2012-09-25 19:16:09 on branch trunk — Put all challenges as "testbed requirement vs. CN characteristic/requirement". (user: ivan, size: 11998) [annotate] [blame] [check-ins using]

    47     47   
    48     48   ** Simple management vs. Distributed node ownership
    49     49   - manage devices belonging to diverse owners?
    50     50   
    51     51   ** Features vs. Lightweight, low cost
    52     52   - support devices ranging from PCs to embedded boards?
    53     53   
    54         -** Heterogeneity vs. Compatibility
           54  +** Compatibility vs. Heterogeneity
    55     55   - work with devices which allow little customization?
    56     56   - support diverse connectivity and link technologies (wireless, wired, fiber)?
    57     57   
    58     58   ** Familiarity & flexibility vs. System stability
    59     59   - Researchers prefer a familiar Linux env with root access.
    60     60   - isolate experiments that share the same node?
    61     61   - keep nodes stable to avoid in-place maintenance?  Accessing node locations
................................................................................
    67     67   - allow interaction at the lowest possible layer of the CN while not
    68     68     disrupting or overusing it?
    69     69   
    70     70   ** Traffic collection vs. Privacy of CN users
    71     71   - allow experiments performing traffic collection and characterization?
    72     72   - avoid researchers spying on users' data?
    73     73   
    74         -** Link instability vs. Management robustness
           74  +** Management robustness vs. Link instability
    75     75   - deal with frequent network outages in the CN when managing nodes?
    76     76   
    77     77   ** Reachability vs. IP address provisioning
    78     78   - We have IPv4 scarcity and incompatibility between CNs, lack of IPv6 support.
    79     79   - support testbed spanning different CNs?
    80     80   
    81     81   * Community-Lab testbed architecture