Netw410 Week1

Week 1 iLab Report

The first objective in the LAN Modeling tutorial is Setting Up the Scenario. The final step in setting up your scenario appears below.

1. (30 points) Once your project is created (after Step 6 above), your workspace will contain a map of the United States. Your project and scenario name can be seen in ITGuru’s top window border in the form of Project: Scenario: .

Capture a screenshot of your new project workspace that clearly shows your project and scenario name, and paste it below.

2. (40 points) In college-level paragraph(s), describe how background traffic affects both e-mail data and VoIP data.

Technology has evolved so much in the past 15 years or so. Previously, internet was something found in schools, libraries, and businesses, but rarely in homes. Currently, it is rare not to find an internet connection at home. With the evolution of the internet and all it has to offer, more and more services are being implemented to run over the internet. Two examples of common services that are handled over the internet are Voice services, known as VoIP, and e-mail. These services are handled differently over internet connections.

Email traffic is typically handled by TCP in the transport layer. TCP ensures that all packets are sent across the network to the receiving end by receiving confirmation that the message was received. If, for some reason, confirmation is not received on all or part of the message, the packets are then resent to ensure delivery. QoS for email can be configured to allow a certain amount of bandwidth dedicated to internet transmission. Because TCP requires confirmation from the receiving party, more bandwidth is used up due to the fact that bandwidth is needed for the sessions to be created and maintained in order to receive the email.

Voice over IP, or VoIP traffic, is handled differently than email. Because voice packets are time sensitive, it is important that they all get there as soon as possible....