Pre-Congestion Notification Encoding Comparison

K. Chan, Georgios Karagiannis (Editor)

Research output: Book/ReportReportProfessional

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Abstract

DiffServ mechanisms have been developed to support Quality of Service (QoS). However, the level of assurance that can be provided with DiffServ without substantial over-provisioning is limited. Pre-Congestion Notification (PCN) investigates the use of per-flow admission control to provide the required service guarantees for the admitted traffic. While admission control will protect the QoS under normal operating conditions, an additional flow termination mechanism is necessary in the times of heavy congestion (e.g. caused by route changes due to link or node failure). Encoding and their transport are required to carry the congestion and pre-congestion information from the congestion and pre-congestion points to the decision points. This document provides a survey of several encoding methods, using comparisons amongst them as a way to explain their strengths and weaknesses.
Original languageUndefined
Place of PublicationUSA
PublisherInternet Engineering Task Force (IETF)
Number of pages18
Publication statusPublished - 19 Nov 2007

Publication series

Name
PublisherInternet Engineering Task Force (IETF)
No.7/draft-chan-pcn-encoding-comparison-01

Keywords

  • METIS-245808
  • CR-C.2
  • CR-B.8
  • CR-B.4.1
  • IR-64495
  • EWI-11473

Cite this

Chan, K., & Karagiannis, G. (Ed.) (2007). Pre-Congestion Notification Encoding Comparison. USA: Internet Engineering Task Force (IETF).
Chan, K. ; Karagiannis, Georgios (Editor). / Pre-Congestion Notification Encoding Comparison. USA : Internet Engineering Task Force (IETF), 2007. 18 p.
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year = "2007",
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Chan, K & Karagiannis, G (ed.) 2007, Pre-Congestion Notification Encoding Comparison. Internet Engineering Task Force (IETF), USA.

Pre-Congestion Notification Encoding Comparison. / Chan, K.; Karagiannis, Georgios (Editor).

USA : Internet Engineering Task Force (IETF), 2007. 18 p.

Research output: Book/ReportReportProfessional

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T1 - Pre-Congestion Notification Encoding Comparison

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Y1 - 2007/11/19

N2 - DiffServ mechanisms have been developed to support Quality of Service (QoS). However, the level of assurance that can be provided with DiffServ without substantial over-provisioning is limited. Pre-Congestion Notification (PCN) investigates the use of per-flow admission control to provide the required service guarantees for the admitted traffic. While admission control will protect the QoS under normal operating conditions, an additional flow termination mechanism is necessary in the times of heavy congestion (e.g. caused by route changes due to link or node failure). Encoding and their transport are required to carry the congestion and pre-congestion information from the congestion and pre-congestion points to the decision points. This document provides a survey of several encoding methods, using comparisons amongst them as a way to explain their strengths and weaknesses.

AB - DiffServ mechanisms have been developed to support Quality of Service (QoS). However, the level of assurance that can be provided with DiffServ without substantial over-provisioning is limited. Pre-Congestion Notification (PCN) investigates the use of per-flow admission control to provide the required service guarantees for the admitted traffic. While admission control will protect the QoS under normal operating conditions, an additional flow termination mechanism is necessary in the times of heavy congestion (e.g. caused by route changes due to link or node failure). Encoding and their transport are required to carry the congestion and pre-congestion information from the congestion and pre-congestion points to the decision points. This document provides a survey of several encoding methods, using comparisons amongst them as a way to explain their strengths and weaknesses.

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KW - CR-C.2

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KW - CR-B.4.1

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Chan K, Karagiannis G, (ed.). Pre-Congestion Notification Encoding Comparison. USA: Internet Engineering Task Force (IETF), 2007. 18 p.