Changes between Version 3 and Version 4 of GENIEducation/SampleAssignments/CCNAssignment/ForInstructors


Ignore:
Timestamp:
05/29/13 16:44:12 (7 years ago)
Author:
shuang@bbn.com
Comment:

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  • GENIEducation/SampleAssignments/CCNAssignment/ForInstructors

    v3 v4  
    156156  Browse the content caches and interests seen on various hosts in the network by loading their ccnd status page on TCP port 9695 in your browser (see Section 5, Hints, below). Which hosts have seen interests and have content cached, and why? [[BR]]
    157157  '''Answer:''' datasource1, datasource2, router, researcher1 and researcher2 have seen interests and content cached. Since the data has passed them.
     158  - '''Task 1.2: Intent Propagation''' [[BR]]
     159  ''This task will demonstrate the behavior of Intent filtering during propagation. ''[[BR]]
     160  Log into the machine ''datasource1'' and run the command ''tail -f /tmp/atmos-server.log''. Next, run ''/opt/ccnx-atmos/client.py'' on both of the hosts researcher1 and researcher2. Enter 1902/01/15 as both start and end date on both hosts, and press <ENTER> on both hosts as close to the same time as possible.
     161  - '''Question 1.2 A:''' [[BR]]
     162  What intents show up at datasource1 for this request? (Use the timestamps in the server log to correlate requests with specific intents.) Will you observe unique or duplicate intents when both researcher1 and researcher2 fetch the same data at precisely the same time? Why? [[BR]]
     163  '''Answer:''' I see unique intents when both researcher1 and researcher2 fetch the same data at the same time. ccdn is able to intelligently identify duplicated intent and effectively filter it during propagation.
     164
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