A One-way Delay Metric for IPPM

Almes, Guy; Kalidindi, S.; Zekauskas, Matthew J.

doi:10.17487/rfc2679

Cited by 260 publications

(137 citation statements)

References 2 publications

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“…The BTH research group has done a number of measurement and modeling experiments on OWTT and the associated convolution products in a chain of IP routers, as reported in [7,8,9,20]. A novel measurement system to do delay measurements in IP routers has been developed, which follows specifications of the IETF RFC 2679 [1]. The system uses both passive measurements and active probing.…”

Section: Methodsmentioning

confidence: 99%

“…One-Way Transit Time (OWTT) is measured by timestamping a specific packet at the sender, sending the packet into the network, and comparing then the timestamp with the timestamp generated at the receiver [1]. Packet timestamping can be done either by software (for the case of delay measurements at the application level) or by hardware (for the case of delay measurements at the network level), and in this case special hardware is used.…”

Section: One-way Transit Time Componentsmentioning

confidence: 99%

“…Packet timestamping can be done either by software (for the case of delay measurements at the application level) or by hardware (for the case of delay measurements at the network level), and in this case special hardware is used. Clock synchronization between the sender and the receiver nodes is important for the precision of one-way delay measurements [1].…”

Section: One-way Transit Time Componentsmentioning

confidence: 99%

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On Kleinrock’s Independence Assumption

Popescu

Constantinescu²

2011

Network Performance Engineering

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Abstract. This chapter is concerned with the impact of traffic correlations on the end-to-end delay of packets in a chain of IP routers represented by an open tandem queueing system. Particular consideration is given to Kleinrock's independence assumption on the performance impact of traffic correlation on packet switched networks with Poisson arrival processes and exponential packet length distributions. According to this assumption, any traffic correlations can be ignored and the effect on delay performance is negligible, subject to sufficient traffic mixing and moderate-to-heavy traffic loads. In this context, results associated with measurements, traffic modeling and delay analysis of an actual chain of IP routers are reported from experiments conducted at the Blekinge Institute of Technology in Karlskrona, Sweden. It is shown that no experimental evidence was found in support of Kleinrock's independence assumption as traffic correlation has an adverse effect on the end-to-end delay of the tandem queueing system.

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Section: Methodsmentioning

confidence: 99%

Section: One-way Transit Time Componentsmentioning

confidence: 99%

Section: One-way Transit Time Componentsmentioning

confidence: 99%

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On Kleinrock’s Independence Assumption

Popescu

Constantinescu²

2011

Network Performance Engineering

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“…For example, in Fig. 1 the OEs in AS 1 and AS 2 measure the same parameters, such as One-Way Delay (OWD) [8] or One-Way Loss (OWL) [9], and react in the same manner due to their mirrored behavior. Therefore, either of them is able to independently decide if it should shift its outbound traffic or not.…”

Section: Overview Of the Proposed Overlay Approachmentioning

confidence: 99%

A Proposal for Inter-domain QoS Routing Based on Distributed Overlay Entities and QBGP

Yannuzzi

Fonte

Masip-Bruin

et al. 2004

Quality of Service in the Emerging Networking Panorama

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Abstract. This paper proposes a novel and incremental approach to InterDomain QoS Routing. Our approach is to provide a completely distributed Overlay Architecture and a routing layer for dynamic QoS provisioning, and to use QoS extensions and Traffic Engineering capabilities of the underlying BGP layer for static QoS provisioning. Our focus is mainly on influencing how traffic is exchanged among non-directly connected multi-homed Autonomous Systems based on specific QoS parameters. We provide evidence supporting the feasibility of our approach by means of simulation.

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“…The IETF's IP Performance Metrics (IPPM) Working Group suggested one-way metrics and architecture for one-way measurement [2]. Metrics are one-way delay, one-way packet loss, instantaneous packet delay variation, etc [3][4][5]. One-way measurement is a kind of active measurement, which injects measurement packets in a path to measure and observes how the packets are served.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of One-Way IP Performance Measurement Tool

Jeong¹,

Lee²,

Choi

2002

Information Networking: Wired Communications and Management

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Abstract. In this paper, we propose an architecture of measurement system which can measure IETF's IP Performance Metrics (IPPM) such as one-way delay, one-way packet loss and packet delay variation in the Internet. As the synchronization among measurement systems is very important in one-way delay measurement, we used the Global Positioning System (GPS) to synchronize the measurement systems and provided the precision up to one micro-second. To improve the accuracy of one-way delay measurement, the proposed system employs timestamps at the Ethernet frame level. We carried out measurements on the real Internet with the implemented system. It is seen that delay differs largely between path directions. Through these measurements, we present the need of one-way delay measurement.

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A One-way Delay Metric for IPPM

Cited by 260 publications

References 2 publications

On Kleinrock’s Independence Assumption

On Kleinrock’s Independence Assumption

A Proposal for Inter-domain QoS Routing Based on Distributed Overlay Entities and QBGP

Design and Implementation of One-Way IP Performance Measurement Tool

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