IT Infrastructure
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IT_Infrastructure_Project_Phase_II.pdf
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IT INFRASTRUCTURE PROJECT PHASE II INSTRUCTIONS
Prjoect Overview
Phase II of the project will pick up where the IT Infrastructure Project Phase I left off. In this
project, you will see how a network administrator improves network performance in both a wired
and a wireless LAN, again using Riverbed Modeler Academic Edition. You will use this
knowledge as well as research from scholarly computing journals to redesign and improve the
information system.
Similar to phase I of the project, once you have completed the scenarios, you will have a better
idea of what needs improvement within the organization’s IT infrastructure. In Phase II, several
additional challenges are necessary to be met from Directory Services to a WAN between
separate hospital buildings to name a few. These are listed in the final instructions and outline
toward the end of this document. Please review these new requirements prior to starting your
new literature review as they are relevant to this dimension of the project. You will subsequently
complete a review of related literature to identify what recent research supports that can improve
system feasibility, RAS (reliability, availability, serviceability), security, and disaster recovery of
the existing IT infrastructure and model of the Friendly Care Hospital. Once this review of
literature is complete, you will use the outcomes and research results to advance and improve the
IT infrastructure in the modeling software of the Friendly Care Hospital. You will re-run the
simulations and benchmark the old and new systems as part of the project results. Proper data
analysis, comparison, and contrast will be summarized within in-text tables and figures as well as
appendixes to explain the results of the IT infrastructure re-design and improvement.
Please reference the complete instructions followed by the section on “Submitting your Work”
and the grading rubric for more details on what is necessary to complete this project.
Project Scenario
As stated in the previous project, Friendly Care Hospital is one of the biggest hospitals in DC. It
owns a 5-story building and houses many departments that span multiple floors. Its Radiology
department is spread across the first and second floors, connected by a dedicated LAN. The
department has recently deployed a new “Radiology Images” application as part of their
initiative to digitize patient records.
In the previous phase, you were able to discover the cause of Friendly Care Hospital’s network
problem, and you proposed a great solution, but in this phase, you will put your proposed
solution to the test! Also, Friendly Care is looking to design a wireless hospital for the future and
wishes to study a proposed network design, using a completely different topology and traffic
profile. Given your success on the previous project, you have been selected for this job as well!
Scenario 2
Part 4: Switch scenarios to simulate the same network with 1 Gbps links
1. Open Riverbed Modeler Academic Edition, and open the LAN_Lab_1 file that you used in the previous phase 1 project. With the lab file opened, click on Scenarios Switch
To Scenario.
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2. Choose the 1 Gbps scenario (if the Model Attribute Conversion dialog appears, click Yes).
3. To examine the change in attributes of the links, right-click on the two links that had reached 100% peak utilization in the previous scenario, and click Edit Attributes.
Question #1: What type of a connection is this (hint: look at the model attribute)?
4. Click on the configure/run DES simulation toolbar button.
5. Make sure the Simulation Duration is set to 1 hour.
6. Click Run. Monitor the progress bar as the simulation proceeds.
7. When the simulation completes, click close.
8. Click on DES Results View Results.
9. Expand Global Statistics, Email and FTP.
10. Select Download Response Time (sec) and Upload Response Time (sec) for both Email and FTP. The selected graphs will be plotted on the right side of the frame.
11. On the lower-right side, make sure the settings are Stacked Statistics, This Scenario and As IS. Click Show. A Window is created with the graphs containing the raw data for the
Email and FTP application response times. Leave this window open.
12. On the View Results window, click the As Is drop-down menu and select average. This will convert the raw data into an average curve. Click Add and then click on the top-most
graph of the window that you created in step 11. Now you have both the raw data and
average graphs for Email and FTP application response times.
Note: If you did not follow the underlined instruction above, you may have mismatched
raw data and average graphs, so close the graph, choose Delete and go through steps 11
and 12 again.
13. Capture a screenshot of the graph created in the previous step that includes a date/time stamp or unique desktop element, but leave the window open for the next step. A sample
of what the graph should look like is shown below. If you need help figuring out how to
take a screenshot of a graph, refer to the “To copy graphs from Riverbed Modeler to
Microsoft Word” section at the end of this document.
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14. Use the graph you created in the previous step to complete the table below. Do the best you can to read the values from the graph, but it may be helpful to maximize the graph
window to fill your screen to see more detail on the graphs. Hovering the mouse pointer
over a given point or line for a second or two will provide a tooltip window that shows
the “Y” coordinate of the point.
Min Max Avg
Email Download Response Time (sec)
Email Upload Response Time (sec)
FTP Download Response Time (sec)
FTP Upload Response Time (sec)
15. Go back to the ‘Results Browser’ window and unselect the previously selected choices for Email and FTP
16. Expand HTTP and Custom Application.
17. Select Page Response Time (seconds) for HTTP and Application Response Time (sec) for Custom Application. The selected graphs will be plotted on the right side of the
frame.
18. Repeat steps 11 and 12 to create the raw and average graphs for the Page and Application Response Times.
19. Capture a screenshot of the graph created in the previous step that includes a date/time stamp or unique desktop element, but leave the window open for the next step. A sample
of what the graph should look like is shown below.
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20. Use the graph you created in the previous step to complete the table below. Do the best you can to read the values from the graph, but it may be helpful to maximize the graph
window to fill your screen to see more detail on the graphs. Hovering the mouse pointer
over a given point or line for a second or two will provide a tooltip window that shows
the “Y” coordinate of the point.
Min Max Avg
HTTP Page Response Time (sec)
Custom Application App Response Time
(sec)
21. Close the Results Browser window when done.
Question #2: How do these results compare to the previous scenario that was
completed in Phase 1 IT Infrastructure Project (100BaseT)?
22. Click DES Results Find Top Statistics. Expand Link Statistics point-to-point and select utilization and click Find Top Results button. You will see link utilization
values in a table sorted in descending order based on Average column.
23. Click on the Maximum column name until it sorts by decreasing order of the Maximum column.
Question #3: Which links have more than 60% maximum utilization?
Scenario 3
Part 5: Assessing Wireless LANs
Friendly Care Hospital is contemplating moving towards wireless offices in future months.
With growth, they expect to relocate to 4 buildings, each connected to the outside by a wired
router. Within each building, the workstations will be wireless, connected to a wireless
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access point. This is their first (preliminary) wireless design, and they want to evaluate it
using the Riverbed Modeler software. Hence, they have decided to keep the topology and
traffic straightforward with workstations running only Web-based applications. In this
scenario, we will focus on examining Media Access Delay values, an important component
of characterizing Wireless LANs.
24. Click on Scenarios Switch To Scenario, and select the WLAN Scenario (if the Model Attribute Conversion dialog box, click Yes).
25. To understand this new topology, double click on any of the office building subnet icons.
26. Each building is configured with workstations connected wirelessly to an access point (an Ethernet router) supporting a 1 Mbps data link. Explore the attribute values of various
devices. Click the icon in the toolbar to return up a level in the subnet hierarchy, as
needed.
27. Click on the configure/run DES simulation toolbar button.
28. Make sure the Simulation Duration is set to 8 hours.
29. Click Run. Monitor the progress bar as the simulation proceeds.
30. When the simulation completes, click close.
31. Click on DES ResultsView Results.
32. Expand Global Statistics HTTP. Click the Page Response Time checkbox and then click the Show button.
33. On the View Results window, click the As Is drop-down menu and select average. This will convert the raw data into an average curve. Click Add and then click the graph in the
window that you created in the previous step. Now you have both the raw data and
average graphs for HTTP Page Response Times.
34. Capture a screenshot of the graph created in the previous step that includes a date/time stamp or unique desktop element, but leave the window open for the next step. A sample
of what the graph should look like is shown below.
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35. Use the graph you created in the previous step to complete the table below. Do the best you can to read the values from the graph, but it may be helpful to maximize the graph
window to fill your screen to see more detail on the graphs. Hovering the mouse pointer
over a given point or line for a second or two will provide a tooltip window that shows
the “Y” coordinate of the point.
Min Max Avg
HTTP Page Response Time
36. Deselect all options in the View Results window.
37. Expand Wireless LAN. Click the Media Access Delay (sec) checkbox. Also expand, Object statistics, Campus Network, office bldg 1, Access Point, and Wireless LAN.
Click the Delay (sec) checkbox. Ensure that As-Is is selected, and then click the Show
button.
38. On the View Results window, click the As Is drop-down menu and select average. This will convert the raw data into an average curve. Click Add and then click the top-most
graph in the window that you created in the previous step. Now you have both the raw
data and average graphs for Media Access Delay times and the Delay times for the
Access Point.
39. Capture a screenshot of the graph created in the previous step that includes a date/time stamp or unique desktop element, but leave the window open for the next step. A sample
of what the graph should look like is shown below.
40. Use the graph you created in the previous step to complete the table below. Do the best you can to read the values from the graph, but it may be helpful to maximize the graph
window to fill your screen to see more detail on the graphs. Hovering the mouse pointer
over a given point or line for a second or two will provide a tooltip window that shows
the “Y” coordinate of the point.
Min Max Avg
MAC Delay for Wireless LAN Scenario
MAC Delay for Access Point (bldg1):
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41. Project Re-design. Begin with scenario 1 and phase 1 of the IT infrastructure project. The organization is expanding its technology to a second building. The new building
requires twice the computing user, bandwidth, switching, and server capacity than the
second floor. The primary deliverables should include:
Perform a minimum of a 1,000-word literature review, finding at least 10 relevant scholarly journal articles to support the addition of the IT infrastructure proposed
in your re-design. Articles should be relevant to the new deliverables such as
healthcare information systems, wide area networks, load balancing, security,
disaster recovery, and scalable computing.
Re-run the simulations and open the same previous graphs to document and compare the data from the old infrastructure to the improved infrastructure.
Floors 1 & 2 of the existing building (scenario 1 – 100Mbs) o Add a subsequent EMR server to each floor o Add the proper switching, routing, and load balancer hardware to connect
the EMR servers between all floors of the building
Building 2 o Add 2 floors similar to scenario 1 100Mbs o Add the proper switching, routing, and load balancer hardware to connect
the EMR servers between all floors of the building
o Add appropriate infrastructure including routing, switching, loading balancing, disaster recovery, and security for the following additional
servers and services that the hospital must now support:
Accessibility between the floors of all servers and systems across both buildings
WAN that connects the buildings including configuration of appropriate networking protocols to support this
Appropriately located firewalls Two (2) load balanced web application / content management
system servers accessible from the Internet
Two (2) database servers Clustered storage Area Network (SAN) Federated authentication services Microsoft Active Directory Backup servers and/or services You choose and support - four (4) additional unique IT
infrastructure servers / services / platforms that are justifiably
relevant to a hospital data center today
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Submitting your work
Complete all of the steps in this project. Then, in a new Word document, include all of the
following:
Submit the lab files for the simulator, zip the entire lab folder and assure it works so the professor can run the simulator
Submit a properly formatted APA paper o Here is an example paper:
https://owl.english.purdue.edu/owl/resource/560/18/
o Introduction Introduce the primary goals and objectives of the project
o Review of literature that supports the new system simulation, model, and design
Include appropriate IT frameworks and standards in which to design the new system
Address system feasibility, RAS (reliability, availability, serviceability), security, and disaster recovery
Include at least 10 scholarly journal articles focusing on relevant research on the problems being addressed
research on the problems being addressed o Results of the new IT infrastructure
As appendixes, paste a copy of the completed tables from steps 14, 20, 35, and 40.
As appendixes, paste screenshots of the four graphs from steps 13, 19, 34, and 39.
Provide answers to the three questions in steps 3, 21, and 23 and include as appendixes.
Compare and contrast the old and new system simulation data and the designs themselves
Thoroughly explain all of the results of the old and new IT infrastructure, properly referencing the data in the appendixes
and using in-line tables and figures where appropriate to tell
the story
Present the results objectively and unbiased, do not include the author’s opinions
Use appropriate metrics and data from the modeling simulator
Reference appropriate IT frameworks and standards from literature to describe what supported the specific design
decisions made and their justified implementation in the project
Screenshots are required as Appendixes with an operating system date/time and something unique from your personal computer in the
background to identify you as the original author
Link into the results section the proper Appendixes that reference images of the system designs
o Conclusion Highlight any limitations, managerial implications, and conclusions of
the project deliverables and outcomes
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Save the file as Lastname_Firstname_ProjectPhaseII. Include your name in the assignment file
itself and submit your file to Blackboard. Any assignment without WORKING simulator lab
files or with screenshots that do not include a visible date and timestamp from the
operating system and a unique desktop element to identify the student’s work will not be
accepted.
To copy graphs from Riverbed Modeler to Microsoft Word:
a. Press the “Print Screen” key on your keyboard. The key is usually located at the upper right corner of a keyboard.
b. You can also use the “snipping tool” in Windows
c. For Windows users, open application “Paint” and paste the screen shot over. “Paint” usually can be accessed this way: Start -> All Programs -> Accessories. For users of
other operating systems, use a similar application.
d. In “Paint”, select the graph or area needed and copy it. You need to click this icon in order to be able to select an area. The icon is listed on the left side of the window.
e. Paste the selected area to a word processor.
f. Save the file as Lastname_Firstname_ProjectPhaseII
