Providing and verifying advanced ip services in hierarchical diffserv networks - The case of GEANT

Liakopoulos, A; Maglaris, B; Bouras, C; Sevasti, A

dc.contributor.author	Liakopoulos, A	en
dc.contributor.author	Maglaris, B	en
dc.contributor.author	Bouras, C	en
dc.contributor.author	Sevasti, A	en
dc.date.accessioned	2014-03-01T11:44:38Z
dc.date.available	2014-03-01T11:44:38Z
dc.date.issued	2004	en
dc.identifier.issn	1074-5351	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/37053
dc.subject	Differentiated services	en
dc.subject	Monitoring	en
dc.subject	Premium IP	en
dc.subject	Service provisioning	en
dc.subject	SLAs	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Telecommunications	en
dc.subject.other	Application specific integrated circuits	en
dc.subject.other	Bandwidth	en
dc.subject.other	Hierarchical systems	en
dc.subject.other	Network protocols	en
dc.subject.other	Quality of service	en
dc.subject.other	Telecommunication traffic	en
dc.subject.other	Differntiated dervices (diffServ)	en
dc.subject.other	Multi-domain environments	en
dc.subject.other	Service level agreements (SLA)	en
dc.subject.other	Service provisioning	en
dc.subject.other	Internet	en
dc.title	Providing and verifying advanced ip services in hierarchical diffserv networks - The case of GEANT	en
heal.type	other	en
heal.identifier.primary	10.1002/dac.645	en
heal.identifier.secondary	http://dx.doi.org/10.1002/dac.645	en
heal.language	English	en
heal.publicationDate	2004	en
heal.abstract	The differentiated services (DiffServ) framework is widely proposed as an efficient method for providing advanced IP services to large-scale networks, with QoS requirernents. However, the provisioning of such services it) production networks has proved to be more difficult than initially expected. in defining, setting and verifying appropriate Service Level Agreements (SLAs). GEANT, the Gigabit core pan-European research network, on a pilot basis introduced 'Premium IP' service, offering bounded delay and negligible packet loss to the European National Research & Education Networks (NRENs) that it interconnects. However. large scale provisioning of this new service requires the definition of efficient interaction procedures between administrative domains involved and methods for SLA monitoring. This Paper focuses on these issues and presents the experience acquired from the early experiments in GEANT, as an example of hierarchical Gigabit multi-domain environment, enabled with QoS provisioning to its constituent NRENs. This model scales more efficiently than the common peering Internet Service provider (ISP) commercial paradigm. Finally, we outline other options that promise QoS. such as Layer 2 VPNs in MPLS backbones. with non-standard (yet) mechanisms. Copyright (C) 2004 John Wiley Sons, Ltd.	en
heal.publisher	JOHN WILEY & SONS LTD	en
heal.journalName	International Journal of Communication Systems	en
dc.identifier.doi	10.1002/dac.645	en
dc.identifier.isi	ISI:000221216800003	en
dc.identifier.volume	17	en
dc.identifier.issue	4	en
dc.identifier.spage	321	en
dc.identifier.epage	336	en