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Point-to-Point Services in Hybrid Networks: Technologies and Performance Metrics

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3 Author(s)
Liakopoulos, A. ; Greek Res. & Technol. Network S.A. (GRNET), Athens ; Hanemann, A. ; Sevasti, A.

Research networks, apart from pure IP packet-switched services, progressively introduce hybrid services, which combine packet switching and circuit switching technologies. Optical wavelengths (lambdas), SONET/SDH, 1/10 gigabit Ethernet are examples of technologies stitched together in order to realize point-to-point (P2P) services that cross multiple domains. Network monitoring aims to detect anomalies, assess performance degradations and localize faults in a network. In this paper, we discuss the challenges of monitoring P2P hybrid services deployed in a multi-domain environment. We briefly discuss diverse methods of transporting Ethernet traffic over hybrid networks and present performance metrics related to various layer 1/2 technologies. We give an example of a hybrid service and discuss why it is challenging to identify service degradation problems in a multi-domain environment.

Published in:

Networking and Services, 2007. ICNS. Third International Conference on

Date of Conference:

19-25 June 2007

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