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Method of Implementing QoS - Essay Example

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Q.O.S a networking terminology and acronym for Quality of Service, is a concept that is utilized for purpose of improving the overall performance of the network through a specially adapted mechanism. The mechanism is based on segmenting and putting forward the data in the pipe line that is of higher importance and need…
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Method of Implementing QoS
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Data loss, delays are few of the events that could take place as a result of absence of quality of service mechanism. The categorization is as a result of number of considerations that are taken into account namely the Mac address, the ports both Ethernet and T.C.P. Various methods are available for implementing Q.O.S. All have their own advantages and drawbacks and most of them do serve up the purpose of improving overall performance of the network through specific means. The good point about Q.O.S is the fact that they can prioritize both the voice and data communication.

However it is often noted that the real need for bandwidth adjustment arises in case of data traffic. Q.O.S in simple words is a protecting shield and an assurance of its kind which provides smooth and constant flow no matter how heavy the resources are. Integrated Services model, best effort model are few of the mechanisms used for this purpose. All these mechanisms are devised for accommodating data traffic primarily. The entire T.C.P traffic is at disposal of the quality of service and since nearly all of the traffic is passed through T.C.P layer, therefore need of an effective quality of service tool is unavoidable.

Best effort mechanism: There are number of Q.O.S approaches that provide one particular line choosing decision. The best effort mechanism is comparatively better in this regard since it enables the users and servers with multiple paths option. This bunch of paths is well planned out, equally calculated and with all the constraints in mind is screened out to ensure best possible transmission over even a densely populated linkage (Smith & Aceves, 2000). The default nature of Best effort scheme: Default mechanism is followed in the scheme which can be termed as its strength as well as weakness at the same time.

In some cases it is even referred to as no Q.O.S due to its first in first out and no separation behavior. This default scheme is followed across both the switches and routers. Sensitivity consideration is partially compromised in this form of quality service provision. Strength: The strength enjoyed by this scheme is the manner in which the entire route and its model are designed. With nearly all the traffic being packet enabled, best effort serves well fulfilling the requirements of the network especially the bandwidth hungry resources.

Weakness: Weaknesses can be identified in case of only one link to a respective linage. With modern times putting up the challenges of further high bandwidth interfaces, multiple paths to a single source are the order of the day. The possible draw back in this form of servicing is the possibility of loss of data elements (usually packets) on the way. Scalability can be an issue in all kinds of Q.O.S. Since increasing number of users and channels demand more bandwidth hence the performance is directly influenced by the scalable capacity.

The constraint that would be needed to be taken into account would be the availability of heavy bandwidth in the background so as to provide smooth flow to the dedicated paths set up. To some experts mainly Cisco, a dedicated over 20 percent bandwidth must be kept in store for the best effort scheme. Any less percentage of capacity could seriously drain out the entire network and hence this mechanism would not live up to its desired purpose. Another problem that could arise in this form of s

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