Effect of number of drop precedences in assured forwarding

Goyal, Megh R.; Durresi, Arjan; Misra, Paurush Kumar; Liu, Chunlei; Jain, Raj

doi:10.1109/glocom.1999.831633

Cited by 41 publications

(26 citation statements)

References 5 publications

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“…In an over-provisioned network, target rates are achieved regardless of these five factors. This result is corroborated by [3]. However the distribution of the excess bandwidth depends on these five factors.…”

Section: Related Worksupporting

confidence: 77%

“…When responsive TCP flows and nonresponsive UDP flows share the same class of service, there is unfair bandwidth distribution and TCP flow throughputs are affected. The fair allocation of excess bandwidth can be achieved by giving different treatment to out-of-profile traffic of two types of flows [3]. Recently [4] demonstrates the unfair allocation of outof-profile traffic and concludes that the aggregate that has the smaller/larger target rate occupies more/less bandwidth than its fair-share regardless of the subscription level.…”

Section: Related Workmentioning

confidence: 99%

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Penalty Shaper to Enforce Assured Service for TCP Flows

Lochin¹,

Anelli²,

Fdida³

2005

NETWORKING 2005. Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile A

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Abstract. Many studies have explored the TCP throughput problem in DiffServ networks. Several new marking schemes have been proposed in order to solve this problem. Even if these marking schemes give good results in the case of per-flow conditioning, they need complex measurements. In this paper we propose a Penalty Shaper (PS) which is able to profile a set of TCP flows so as to improve its conformance to a desired target. The main novelty of this shaper is that the shaping applies a penalty delay which depends on the out-profile losses in a DiffServ network. This penalty shaping can be used with any classic conditioner such as a token bucket marker (TBM) or a time sliding window marker (TSWM). We made an evaluation of the Penalty Shaper on a real testbed and showed that the proposed scheme is easily deployable and allows for a set of TCP flows to achieve its target rate.

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Section: Related Worksupporting

confidence: 77%

Section: Related Workmentioning

confidence: 99%

Penalty Shaper to Enforce Assured Service for TCP Flows

Lochin¹,

Anelli²,

Fdida³

2005

NETWORKING 2005. Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile A

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show abstract

“…[4], [5], [6]. This is because the predominance of traffic is carried by TCP and the TCP congestion avoidance mechanism reacts in a complex manner with its environment.…”

mentioning

confidence: 99%

Providing throughput differentiation for TCP flows using adaptive two-color marking and two-level AQM

Chait

Hollot

Misra

et al.

Proceedings.Twenty-First Annual Joint Conference of the IEEE Computer and Communications Societies

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Abstract-In this paper we propose a new paradigm for a Differential Service (DiffServ) network consisting of two-color marking at the edges of the network using token buckets coupled with differential treatment in the core. Using fluid-flow modelling, we present existence conditions for tokenbucket rates and differential marking probabilities at the core that result in all edges receiving at least their minimum guaranteed rates. We then present an integrated DiffServ architecture comprising of an active rate management controller at the marking edge and a two-level active queue management controller at the core. The validity of the fluid flow model and performance of this new scheme are verified using ns simulations.

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“…By coloring TCP packets with red, yellow and green, and UDP packets with only red and green, it is possible to achieve a fair allocation of excess network bandwidth between responsive and non responsive sources. Using the RED proposal for colored traffic as buffer management scheme, simulation results in [12] show some improvements in outbound bandwidth fair sharing when applying this new scheme, but the problem remains when only TCP sources coexist.…”

Section: Introductionmentioning

confidence: 99%

Counters-Based Modified Traffic Conditioner

Cano

Cerdan

García-Haro

et al. 2002

From QoS Provisioning to QoS Charging

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Abstract. Traffic conditioners play a key role in implementing the Assured Service in the framework of the DiffServ approach. Many research papers have focused on finding the best traffic conditioner able to assure contracted target rates and to fairly distribute the excess bandwidth among competing sources. Nevertheless, none of the proposals presented so far accomplishes simultaneously both features. We propose a traffic conditioner for the Internet Assured Service called Counters-Based Modified (CBM) that strictly guarantees target rates and performs a fair share of the excess bandwidth among TCP Reno sources. The ability of strictly providing the inbound bandwidth is inherited from its predecessor the Counters-Based algorithm, and the fairness in the outbound bandwidth distribution is met by probabilistically dropping OUT packets in the traffic conditioner. To determine the dropping probability of an OUT packet, the amount of excess bandwidth and the average RTT of all connections in the traffic conditioner have to be known. Although this fact implies using some sort of signaling, it results more feasible than other proposed intelligent traffic conditioners. The CBM traffic conditioner is evaluated under different conditions by simulation using TCP Reno sources. Simulation results presented in this paper lead us to suggest it as a feasible election for the traffic conditioner device implementation in DiffServ.

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Effect of number of drop precedences in assured forwarding

Cited by 41 publications

References 5 publications

Penalty Shaper to Enforce Assured Service for TCP Flows

Penalty Shaper to Enforce Assured Service for TCP Flows

Providing throughput differentiation for TCP flows using adaptive two-color marking and two-level AQM

Counters-Based Modified Traffic Conditioner

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