Choose a method of implementing QoS - Research Paper Example

If two, three, or more traffic forms have equal value and requisites, it is needless to classify that numerous traffic types. Traffic sorting, which is the second step in implementing quality of service, will label a small number of traffic types, not hundreds. The applications that end up in various traffic types have separate requisites; thus, the network have to supply them with varied service classes (Hall, 2002). The classification of how every traffic form is serviced is called the network policy (Flannagan, 2001 & Hall, 2002).

Determining traffic forms and their requisites, the first stage of implementing quality of service, involves the following components or sub-stages: 1) completing a network audit, 2) completing a business audit and identifying the significance of every application, and; 3) identifying the proper service levels for every traffic type. The second stage of implementing quality of service is categorizing traffic based on the requisites determined. The meaning of traffic types does not have to be universal; it must contain the traffic (application) forms that were detected during the network audit stage.

You can categorize tens or even hundreds of traffic variants into a small number of types. The classified traffic types should be in accordance with business goals. The traffic or application forms in the same type should have similar INTEGRATED SERVICES MODEL 3 requisites and business requisites. The exceptions to this policy are the scavenger-type traffic or applications that have not been determined. Classifying policies for every traffic type is the third stage of implementing quality of service.

Following the traffic types have been produced based on the network audit and business goals, the final stage of implementing quality of service in an enterprise is to supply a network-wide classification for the quality of service service-level that will be allocated to every traffic type. This is called determining a quality of service policy, and it may consist of having to finish the following: 1) establishing the highest bandwidth limit for each type, 2) establishing the lowest bandwidth guarantee for each type, 3) allocating a relative priority level to a type, 4) using congestion avoidance, congestion management, and several other highly developed quality of service technologies to a type (Fgee, Philips, Robertson, & Sivakumar, 2003).

In the mid 1990s, IntServ or the Integrated Services model was developed and was the initial serious effort to supply eng-to-end quality of service (Fgee et. al., 2003). It was necessary for simultaneous applications. Integrated Services is based on clear caching/administering and signaling network resources for the applications that warrant it. Integrated Services is usually referred to as hard quality of service, since hard quality of service ensures attributes such as packet loss, delay, and bandwidth, thus supplying a forseeable service level (Hall, 2002).

Integrated Services uses RSVP or Resource Reservation Protocol as the signaling protocol (Fgee et. al., 2003). Any application having a particular bandwidth requisite have to wait for RSVP to run along the course --- source to destination --- step by step, and request bandwidth reservation for the application path. An application can start to operate after a successful effort INTEGRATED SERVIC