Network LAB 3 Prepared by: Eng. Mennatallah Hesham Uder Supervision of: Dr. Nermeen Hamza Dr. Iman Fahmy

Agenda What is applications and profiles? Create a new network Run statistics and view results Compare results

Applications and Profiles Two boxes that do not represent physical components The Applications node contains data about the applications used in the network, such as Web browsing. More specifically, traffic is associated with each application, so there is a difference between “light Web browsing” and “heavy Web browsing.” In the Profiles icon, different applications are associated with different PCs.

Let’s Create a New Network Step 1: Launch IT Guru and create a new projectn “hub_switch_project”. Step 2: Create a scenario “hub_scenario”. Later we will add another scenario into the same project “switch_scenario”. Step 3: Choose the default model library and default scenario dimensions. Step 4: Drag five Ethernet workstations and a Server into the construction area and connect them up with the aid of a hub.

Let’s Create a New Network Step 5: Add profile and application nodes. Step 6: Open the attributes window for application node, rename it to “applications” and select “Default” for the Application Definitions row. This makes all standard network applications available for use in our topology – HTTP, FTP, , Database, etc. Step 7: We will create a custom profile – web application user profile – let us call the profile “web user.” To get there, go under the edit box – attributes window - for the profile.

Let’s Create a New Network Step 8: Go to profile configuration and select “edit”. Step 9: Under Profile Name change the name to “Web User”. Step 10: Change the entry under Repeatability column to “unlimited”.

Let’s Create a New Network Step 11: Under Applications select edit and a new window pops out – this is the Applications Table window. Here we will select an application that will be associated with the Web User profile. Step 12: Select row 1 and pick “web browsing heavy”.

Let’s Create a New Network Step 13: Close all open windows. At this stage we have created a new profile called “Web User” and this profile can be applied in our topology.

Let’s Create a New Network Step 14: Apply the profile “Web User” to all the workstations. This can be conveniently done by holding the control key down and selecting all five workstations and then making the appropriate change in the attribute window of any ONE workstation. One must make sure that the “Apply changes to selected objects” is checked on however in the attribute window of the workstation.

Let’s Create a New Network The profile is applied by first opening the Applications tree. In the row entry for Application Supported Profiles select edit. A new window opens – Supported Profiles window – here go to row 1 and select Web User.

Let’s Create a New Network Step 15: Proceed to configuring the server. Select edit attributes, open the Applications tree and go to the Application Supported Services row. Select edit. A new window the “Applications Services Table window” opens up. Select row 1 and choose web browsing heavy.

Run and View Results Step 16: Choose the statistics that ought to be collected during a simulation run and then run the simulation and view result.

Compare Results Use Switch instead of Hub and compare results (Try it by yourself)

Assignment 2 The First Bank of Paradise’s Operations building has 10 floors, each having many users connected to a 10Base-T workgroup switch in the floor’s telecommunications closet. The users share an Oracle server and seven file and print servers in the basement.

Assignment 2 In Scenario 1, the switches on each floor are daisy chained to the core switch in the basement. We will see that this daisy chain approach introduces high application latency to users on the highest floor.

Assignment 2 In Scenario 2, the daisy chain topology is retained, but the core switch is moved to the fifth floor. We will see that this reduces latency on the highest floor but increases it on the bottom floor.

Assignment 2 In Scenario 3, the core switch is kept in the basement, but a collapsedbackbone topology is used, in which the core switch in the basement is linked directly to the workgroup switch on each floor.

Assignment 2 Compare the “response time” of “95 Users Floor 10”, “50 Users Floor 5” and “70 Users Floor 1” Hint: Expand Requesting Client Custom Application and select Application Response Time (sec).

Assignment 2 Prepare a brief report giving your conclusions and determining which scenario will achieve the same application performance for all the users.