1 Use ProtoGENI CS606, Xiaoyan Hong University of Alabama

2 outline Prerequisites –User account with Emulab (Utah site, per Prof Hong) –For using Flack (web-based), Browser be Flash ready ProtoGENI general entry – Tutorial of using Flack Interface with example – –And with video clips Tutorial of using command line Linux – –And with video clips Assignment/project #0

3 Emulab’s Administrative Structure Emulab has a two level administrative structure: “Projects”, and “Groups” –Plus “Elab Admins” on top, and “Users” on the bottom –E.g., a class project with multiple, isolated groups (created by the project leader) Administrative control is delegated to “leaders” at each level Project gets its own disk space/tree Users may join multiple projects Groups are independent –Files/experiments are protected from each other Groups can share –Share the common project file hierarchy

4 Account at Emulab Obtain an account : –clicking "Request Account" and then "Join an Existing Project" on the new page. –You will need to join the project UA-cs

5 Flack based tutorial Follow the steps –Login and building credential for use (4min) –Create a slice (a network) –Use Rspec to specify a slice (resource and code) (6min) –Materialize the afore-claimed slice into sliver After waiting for booting, your code is running. You have all the resources at your finger tip –Use tools to monitor your experimental traffic (INSTOOLS)

6 * NOTE: learn Rspec format through examples – –

7 Tutorial with Video : Flack based experiment First GENI Experience: Hello, GENI! – ials/RunHelloGENIhttp://groups.geni.net/geni/wiki/GENIExperimenter/Tutor ials/RunHelloGENI –First clip: login/download credential –Second clip: set up slice/Rspec (save it from web) Iperf server/client –Clean up

8 Command line based tutorial Follow the steps –Login and building credential for use –Obtain command line tools “test scripts” Click the test scripts link –Create a slice (a network) using registerslice.py –Use Rspec to specify resource and code for the slice Tickets contains all the resources and credentials to use them –Materialize the afore-claimed slice into sliver –Need to log into Linux machine to execute the code. –* NOTE: uploading SSH keys

9 Video Tutorial: command line based experiment First Omni Experience: Hello, Omni! – er/Tutorials/HelloOmni

10 Assignment/Project #0 Joining Mailing list for ProtoGENI UsersMailing list for ProtoGENI Users – usershttps://groups.google.com/forum/?fromgroups#!forum/protogeni- users Sample Assignment –Use advanced tutorials: Writing a Web Server – Multithreaded server Obtain the example code and instruction and try out Modify the network parameters, curve your results. Submit a report.

11 Q&A 1. Physical system of ProtoGENI 2. Webserver vs iperf 3. Iperf condition vs network condition

12 Q&A, 1 1. Physical system of ProtoGENI –Physical network (real world hostname and IP address, link via internal network/switches) –Experimental network (own defined topology, own hostname and ip address 10.0.*. *.) –Mapping between experimental and physical many exp nodes can be on one physical node (ie, a exp node uses a Vnode). Rspec can declare the preferences Impact to experiment results –Not using the defined topology. –Super good if all the traffic sends through physical network (interface). –Do not react to changes in the network conditions if sending through physical network (interface).

13 Q&A, 2 Webserver vs iperf –All are multithreaded –Server side listening Iperf has client side and statistics Webclient is not available to run inside the exp due to GUI; it has no statistics

14 Q&A, 3 Iperf condition vs network condition Iperf is a traffic generator –UDP/TCP, Server/client –Parameters to change the sending load –Both server and client output statistics Network conditions –Link delay, link loss rate, link bandwidth, topology –System architecture (S/C, number of Cs, P2P, etc)

15 Including running iperf