Optimized QoS protection of ethernet trees

Tibor Cinkler, András Kern, István Moldován

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

Ethernet is being increasingly employed in metro networks. Ethernet gives routing schemes and protocols for building up trees, for instance STP, RSTP and MSTP. It also implies simple restoration mechanisms. In this paper we propose an optimization framework, where the Ethernet MSTP trees are protected and QoS is guaranteed even after a failure. The optimization is based not only on the topology, but it also takes traffic conditions and QoS constraints into account. The numerical results show that the proposed optimization significantly increases the throughput of the network. The best result can be achieved when preemption is assumed, i.e., when the best effort traffic may remain unprotected, but not the high priority one. This way high throughput can be realized at normal operation, while it still protects prioritized traffic in case of a failure. Furthermore, protection mechanisms act faster than the standard restoration mechanism resulting shorter out-of-service times, and therefore higher availability.

Original languageEnglish
Title of host publicationProceedings - 2005 DRCN
Subtitle of host publication5th International Workshop on Design of Reliable Communication Networks - "Reliable Networks for Reliable Services"
Pages337-344
Number of pages8
DOIs
Publication statusPublished - Dec 1 2005
Event5th International Workshop on Design of Reliable Communication Networks 2005 - Island of Ischia, Naples, Italy
Duration: Oct 16 2005Oct 19 2005

Publication series

NameProceedings - 2005 DRCN: 5th International Workshop on Design of Reliable Communication Networks - "Reliable Networks for Reliable Services"
Volume2005

Other

Other5th International Workshop on Design of Reliable Communication Networks 2005
CountryItaly
CityIsland of Ischia, Naples
Period10/16/0510/19/05

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Keywords

  • Ethernet STP
  • MSTP
  • Optimization
  • Protection
  • QoS
  • Resilience
  • TE

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Cinkler, T., Kern, A., & Moldován, I. (2005). Optimized QoS protection of ethernet trees. In Proceedings - 2005 DRCN: 5th International Workshop on Design of Reliable Communication Networks - "Reliable Networks for Reliable Services" (pp. 337-344). [1563889] (Proceedings - 2005 DRCN: 5th International Workshop on Design of Reliable Communication Networks - "Reliable Networks for Reliable Services"; Vol. 2005). https://doi.org/10.1109/DRCN.2005.1563889