Transcript
Networking Simulation Labs in Web-enhanced IT Classes
Vladimir RiabovAssociate Professor
Department of Mathematics & Computer Science
Rivier College, USA
E-mail: vriabov@rivier.edu
9th NCTT Annual Curriculum Workshop
Springfield, Massachusetts, July 10-13, 2006
July 2006 Networking Simulation Labs 2
Agenda:
• Web-enhanced IT Classes at Rivier College;• Lecture Notes and Web Resources;• Virtual OPNET Labs;• Simulation Techniques in Students’ Research Papers:
– Project Papers (SANs, WiFi, Gigabit Ethernet, etc.)– Digital Video Cluster Simulation with OMNeT++– Ethernet and Switched LANs Simulation with OPNET– Simulating Retransmissions for a WiFi-PCF-enabled Stations
• Workshop Lab: Small Intranet Simulation with OPNET• Conclusion
July 2006 Networking Simulation Labs 3
Web-enhanced IT Classes at Rivier College
• Undergraduate and Graduate Programs in CS & IThttp://www.rivier.edu/departments/mathcs/home/cs/CSIndex.htm
• Certificates in Networking and Information Technologies• IT-related Courses:
– CS553: Introduction to Networking Technology– CS572: Computer Security– CS573: Advanced Wide Area Networks– CS575: Advanced Local Area Networks– CS597: Multimedia and Web Development– CS612: Information Technology– CS632: Client/Server Computing– CS685: Network Management, and others
• Web-enhanced Classes and Virtual Labs across CS/IT Curricula
July 2006 Networking Simulation Labs 4
Lecture Notes and Web Resources
• Instructor’s Web site (Teaching, Research & Publications):
http://www.rivier.edu/faculty/vriabov/• Web sites for IT Courses
– Syllabi– Lecture Notes– Virtual OPNET™ Labs– Assignments– Schedules– Resources– Examples of Students’ Project Papers
• Web Resources
July 2006 Networking Simulation Labs 5
Class Assignments
• Warm-up Exercises• Homework Assignments• Virtual Labs• Midterm Exams• Project Papers• Research Reports• Final Exams
July 2006 Networking Simulation Labs 6
Warm-up Exercises (examples)
• What is the last digit of the number 25975927 [mod(10)]?
• Using MSExcel™ spreadsheet, find the last digit of the number 719 [mod(10)]?
• How to use your findings in these two cases for encrypting e-messages?
July 2006 Networking Simulation Labs 7
What is the last digit of the number 25975927 [mod(10)]?
• It’s enough to consider the last digit of a simpler number 75927;
• Do your experiments (see Table)!• “LAST” can be 7, 9, 3, or 1 only;
therefore, it is a cycle of four cases;• The power, 5927 can be represented as
5927 = 4*1481+3;• Therefore, “LAST” of 75927 is the same
as the “LAST” of 73, which is “3”.• Answer: “3”.• Try MS Excel™Spreadsheets (see
Table)!• Why the last digit of the number 7N at N
> 18 is 0 there?• HINT: Consider the number of
“valuable” digits in large natural numbers calculated with MS Excel™!
N 7^N1 72 493 3434 24015 168076 1176497 8235438 57648019 40353607
10 28247524911 197732674312 1384128720113 9688901040714 67822307284915 474756150994316 3323293056960117 23263051398720718 162841359791045019 1139889518537310020 79792266297612000
July 2006 Networking Simulation Labs 8
Homework Assignments (example 1)• Using Manchester Encoding Format, encode a bit-stream that
represents two first letters of your last name previously written in the ASCII (7-bit) Coding Standard. Using MS Word, plot a diagram that illustrates your Manchester code.
July 2006 Networking Simulation Labs 9
Homework Assignments (example 2)
• Plot a diagram that illustrates a virtual private connection from your home computer to the Rivier College Network. Briefly describe issues that should be resolved for establishing this connection.
July 2006 Networking Simulation Labs 10
Homework Assignments (example 3)A LAN has a data rate of r=4 Mbps and a propagation delay between two stations at opposite ends of d=20 μs. For what range of PDU sizes (S, measured in bits) does the stop-and-wait flow control give an efficiency of at least 50%, E > 0.5? (neglect the transmission time for the ACK signal). The efficiency, E is defined as a ratio of the PDU transmission time (time for inserting the PDU onto the medium) to the total time the medium is occupied for this one PDU.
Stop-and-wait flow control Crystal Yu’s solution: S=?
T=S/r is PDU-transmission time;
E=T/(T+d+d); E > 0.5;
T>0.5*(T+2*d); T>2d;
S>2*d*r; S>2*20*10-6*4*106;
Answer: S>160 bits
July 2006 Networking Simulation Labs 11
Visiting the IT Services Department
July 2006 Networking Simulation Labs 12
Visiting the IT Services Department
July 2006 Networking Simulation Labs 13
OPNET Virtual Labs• OPNET IT Guru Academic Edition™ :
– http://www.opnet.com/services/university/home.html
• OPNET Virtual Lab Manuals:– http://www.opnet.com/services/university/lab_manuals.html • William Stallings, Business Data Communications, Fifth Edition;• William Stallings, Data and Computer Communications, Seventh
Edition;• Raymond R. Panko, Business Data Networks and Telecommunications,
Fourth Edition;• Larry L. Peterson and Bruce S. Davie, Computer Networks – A Systems
Approach,Third Edition;• OPNET IT Guru Academic Edition – A Tool for Networking Education,
Regis University;• Security Labs in IT Guru Academic Edition, Universitat Ramon Llull,
Spain.
July 2006 Networking Simulation Labs 14
Virtual Labs
Four-Six OPNET™ Virtual Labs per Course:(Larry L. Peterson and Bruce S. Davie, Computer Networks – A Systems Approach, Third Edition)
• L00: Introduction - Basics of OPNET IT Guru Academic Edition™• L01: Ethernet - A Direct Link Network with Media Access Control• L02: Token Ring - A Shared-Media Network with Media Access Control• L03: Switched LANs - A Set of Local Area Networks Interconnected by Switches • L04: Network Design - Planning a Network with Different Users, Hosts, and Services • L05: ATM - A Connection-Oriented, Cell-Switching Technology • L06: RIP: Routing Information Protocol - A Routing Protocol Based on the
Distance-Vector Algorithm • L07: OSPF: Open Shortest Path First - A Routing Protocol Based on the Link-State
Algorithm • L08: TCP: Transmission Control Protocol - A Reliable, Connection-Oriented, Byte-
Stream Service • L09: Queuing Disciplines - Order of Packet Transmission and Dropping • L10: RSVP: Resource Reservation Protocol - Providing QoS by Reserving
Resources in the Network • L11: Firewalls and VPN - Network Security and Virtual Private Networks • L12: Applications - Network Application Performance Analysis
July 2006 Networking Simulation Labs 15
Virtual Lab Basics
July 2006 Networking Simulation Labs 16
Lab Project Editor Window
July 2006 Networking Simulation Labs 17
Lab: Network Expansion Plan
In this lesson, you plan for the expansion of a small company’s intranet. Currently, the company has a star topology network on the first floor of its office building and plans to add an additional star topology network on another floor. You will build and test this “what-if” scenario to ensure that the load added by the second network will not cause the network to fail.
(We will build these networks during the NCTT Workshop today)
July 2006 Networking Simulation Labs 18
Creating a New Scenario
Use the Startup Wizard to set up a new scenario:
1 If IT Guru is not already running, start it.
2 Select File > New....
3 Select Project from the pull-down menu and click OK.
4 Name the project and scenario, as follows:
4.1 Name the project <initials>_Sm_Int
Include your initials in the project name to
distinguish it from other versions of this
project.
4.2 Name the scenario first_floor.
4.3 Click OK. The Startup Wizard opens.
5 Enter the values shown in the following table in the dialog boxes of the Startup Wizard:
July 2006 Networking Simulation Labs 19
Creating the Network
July 2006 Networking Simulation Labs 20
Creating the Network (Step 2)
Building a Server, Application & Profile
July 2006 Networking Simulation Labs 21
Expanding the Network & Comparing Results (Step 3)Comparing Results
July 2006 Networking Simulation Labs 22
Students’ Project Papers: “Storage Area Networks (SANs)”Fibre Channel Technology for Storage Area Networks by David Norman (fibre.pdf file is available)
V. Riabov, "Storage Area Networks," The Internet Encyclopedia, Wiley & Sons, Dec. 2003, pp. 1-11.
July 2006 Networking Simulation Labs 23
Students’ Project Papers on Selected Networking ProtocolsGigabit Ethrnet, QoS, and Multimedia Applications by Jeff Corbit (gigabit-ethernet.pdf file is available)
V. Riabov, “Simple Mail Transfer Protocol," The Handbook of Information Security, Wiley & Sons, Dec. 2005, pp. 1-22.
July 2006 Networking Simulation Labs 24
Students’ Project Papers: “WiFi Technologies”Secure Wi-Fi Technologies for Enterprise LAN Network by Tom Borick (wifi.pdf file is available)
V. Riabov, “Going Wireless," Rivier Today Magazine, March 2005.
July 2006 Networking Simulation Labs 25
Digital Video Cluster Simulation with OMNeT++Digital Video Cluster Simulation by Martin Milkovits (cluster.pdf file is available)
Varga, Andras. 2004, OMNeT++ Version 3.0 User Manual [online]. Available via <http://
www.omnetpp.org/>.
July 2006 Networking Simulation Labs 26
Digital Video Cluster Simulation (continue)
From: Digital Video Cluster Simulation by Martin Milkovits
July 2006 Networking Simulation Labs 27
Digital Video Cluster Simulation (results)From: Digital Video Cluster Simulation by Martin Milkovits
July 2006 Networking Simulation Labs 28
Lab Report: Ethernet Study with OPNET™(available from: http://www.rivier.edu/journal/ROAJ-2005-Fall/J16-KUMAR.pdf)
July 2006 Networking Simulation Labs 29
Project: Wi-Fi Technology Simulation with OPNET™(CS575 Project Paper by Vandana Wekhande, Spring 2006)
July 2006 Networking Simulation Labs 30
Conclusions
• Web-enhanced classes and virtual labs in Networking Technologies and other related areas provide students with better instructional support than “traditional” classes;
• Warm-up in-class exercises, homework assignments, lecture notes, field trips to IT Service Department, and virtual labs help students being familiar with modern state-of-the-arts networking technologies;
• Students’ challenge projects and research become vital components of their active studies at colleges that help students finding jobs and being promoted in the networking companies;
• Instructional openness and support become powerful resource for students in classroom and in their future professional life.
top related