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, ...view middle of the document...
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. Quality of Service, or QoS is implemented to ensure that voice traffic is given priority over all other traffic. For instance, if a user is streaming, sending an email, surfing the internet, and downloading a file, all while using their VoIP phone and no QoS is enabled, Voice traffic will not take priority and all traffic will slow down. VoIP, like email, is a bandwidth hog. If QoS is not enabled, the effectiveness of the network will be significantly reduced. It is important to note that VoIP utilizes UDP which is a transfer protocol that sends all packets hoping they get there all in one piece, but does not ensure that it does. Meaning that no confirmation is received as the request of the receipt confirmation slows down the process, and in the world of VoIP, could mean delays or choppy conversation.
While VoIP and email utilize and affect background traffic, they both occupy the bandwidth differently. Quality of Service is used for both, although differently, to ensure the transmission of these services are completed in the best way possible. Email and VoIP both heavily utilize bandwidth, while both in different ways. It is imperative that on networks that intend to use these services, appropriate bandwidth is needed to accommodate the anticipated traffic.