Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers

Nichols, Kathleen; Blake, Steven; Baker, Fred; Black, Dan A.

doi:10.17487/rfc2474

Cited by 1,101 publications

(513 citation statements)

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“…Black et al proposed Diff-Serv [1]. Diff-Serv defines the layout of the TOS byte (DS field) [4] and a base set of packet forwarding treatments (per-hop behaviors, or PHBs) [5]. By marking the DS fields of packets differently and handling packets based on their DS fields, several differentiated services becomes essentially a relativepriority scheme.…”

Section: Related Workmentioning

confidence: 99%

Performance Analysis of a Mobility Support Scheme between Subnetworks in Differentiated Services

Kim

Choi

Mun

2003

Lecture Notes in Computer Science

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Abstract. The Differentiated Services architecture does not have any provision to support the mobile host. This paper analyzes the performance of a scheme to support the mobility service in the Diff-Serv using the Mobile IP. As results, it is shown that the cost varies around 2 times of that of the Mobile IP. Premium service shows higher costs than Assured service does. It is also shown that packet drop probability for mobile hosts may be managed negligible if the proposed scheme is used.

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Section: Related Workmentioning

confidence: 99%

Performance Analysis of a Mobility Support Scheme between Subnetworks in Differentiated Services

Kim

Choi

Mun

2003

Lecture Notes in Computer Science

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“…This treatment is interpreted as a particular PHB [2], [3]. This task is done by the TC (Traffic Control) function, which assigns the correct DSCP [4] for the client's traffic according to it SLA (Service Level Agreement). Recall that each client defines it requirements and these are translated into SLAs.…”

Section: Static Policy Decisionmentioning

confidence: 99%

Dynamic QoS Adaptation Using COPS and Network Monitoring Feedback

Ahmed

Mehaoua

Boutaba

2002

Management of Multimedia on the Internet

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Abstract. This paper presents an approach to handle out of profile traffic using Common Open Policy Service and network monitoring feedback. The proposed approach is based on monitoring and reporting information sent by bandwidth monitors installed on each node of a Diffserv Domain. A monitor interacts with Policy Decision Point. This later, depending on the network state, pushes p olicy decision rules to the Policy Enforcement Point in order to accept, remark or drop out -of-profile traffic dynamically. This allows a dynamic reallocation and management of network resources based on current network state and applications QoS requirements. An implementation and a performance evaluation of the dynamic QoS adaptation framework using a Java COPS and a Linux-based network testbed are also presented.

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“…An example from telecommunications is DiffServ [9]. DiffServ is short for Differentiated Services and is an architecture designed to deliver a different Quality of Service (QoS) grade to various services in telecommunication networks.…”

Section: Introductionmentioning

confidence: 99%

On the Influence of High Priority Customers on a Generalized Processor Sharing Queue

Vanlerberghe

Walraevens

Maertens

et al. 2015

Analytical and Stochastic Modelling Techniques and Applications

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Abstract. In this paper, we study a hybrid scheduling mechanism in discrete-time. This mechanism combines the well-known Generalized Processor Sharing (GPS) scheduling with strict priority. We assume three customer classes with one class having strict priority over the other classes, whereby each customer requires a single slot of service. The latter share the remaining bandwith according to GPS. This kind of scheduling is used in practice for the scheduling of jobs on a processor and in Quality of Service modules of telecommunication network devices. First, we derive a functional equation of the joint probability generating function of the queue contents. To explicitly solve the functional equation, we introduce a power series in the weight parameter of GPS. Subsequently, an iterative procedure is presented to calculate consecutive coefficients of the power series. Lastly, the approximation resulting from a truncation of the power series is verified with simulation results. We also propose rational approximations. We argue that the approximation performs well and is extremely suited to study these systems and their sensitivity in their parameters (scheduling weights, arrival rates, loads ...). This method provides a fast way to observe the behaviour of such type of systems avoiding time-consuming simulations.

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Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 Headers

Cited by 1,101 publications

References 1 publication

Performance Analysis of a Mobility Support Scheme between Subnetworks in Differentiated Services

Performance Analysis of a Mobility Support Scheme between Subnetworks in Differentiated Services

Dynamic QoS Adaptation Using COPS and Network Monitoring Feedback

On the Influence of High Priority Customers on a Generalized Processor Sharing Queue

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