Implementación de calidad de servicios Qos y ckase de servicios Cos en la red Lan del campus de la Universidad Técnica Particular de Loja

Abstract

Before the Internet switched to commercial use, most users were from the academic sector and their transactions included file transfer, e-mail and remote access. With the widespread use of the Internet in society and businesses, the number of users grew and the type of applications that transit the network. Currently, the Internet works with the philosophy of the best effort where each user shares bandwidth with others and, therefore, the transmission of their data concurs with the transmissions of the other users. The packaged data is routed in the best possible way, according to the routes and available bands. When congestion exists, packets are discarded without distinction. There is no guarantee that data transmission will succeed. Meanwhile, applications such as voice over IP and videoconferencing need such guarantees. The implementation of quality of service (Q0S) in the backbone is essential for the success of advanced applications such as video conferencing and VoIP (voice over IP or IP telephony). These applications demand, in addition to high bandwidth, a differentiated service. In many cases it is necessary to offer more guarantee and security for the advanced applications, once the traffic of these applications happens to have priority in relation to traditional applications. With the application of QoS, the packages are marked to distinguish the types of services and the routers are configured to create different rows for each application, according to the priorities of the same ones. Thus, a certain bandwidth. Within the communication channel, is reserved so that, in case of congestion, certain types of data flows or applications have priority in the delivery. In order to determine the correct functioning of QoS in a network, a system-wide planning scheme must be enabled, through a policy of assigning the defined queues with different priorities. Once the packages are assigned to a specific queue they are configured with a scheduling scheme using a specific method defined by the administrator, thus guaranteeing the delivery of end-to-end packages, improving the quality of Service in the network object of the present project .