@techreport{TD:6YSQ6S,
	att_abstract={{Abstract. The ability of an IP backbone network to deliver robust and  dependable communications relies on quickly restoring service after  failures. Service-level agreements (SLAs) between a network service provider and  customers typically include overall availability and performance  objectives. To achieve the desired SLA, we have developed a methodology for the combined analysis of performance and reliability  (performability)of networks across multiple layers by modeling the  probabilistic failure state space in detail and analyzing different  restoration alternatives. This methodology has been used to analyze large  commercial IP-over-Optical layer networks. In this paper we extend our  methodology to evaluate restoration approaches for an IP-based satellite backbone network. Because  of the environment in which they operate (long delay links, frequent  impairments), satellite networks pose an interesting challenge to typical  restoration strategies. We describe the potential multi-layer restoration  alternatives and compare their performability. Interestingly, while it is commonly thought that SONET ring restoration at the lower layer improves  overall reliability, we find that it may not always improve performability  in this environment. }},
	att_authors={ko2952, kr2812, rd2518, ac2182, rs5419, mm2916},
	att_categories={},
	att_copyright={{}},
	att_copyright_notice={{}},
	att_donotupload={},
	att_private={false},
	att_projects={},
	att_tags={},
	att_techdoc={true},
	att_techdoc_key={TD:6YSQ6S},
	att_url={http://web1.research.att.com:81/techdocs_downloads/TD:6YSQ6S_DS1_2010-08-18T15:33:26.756Z.txt},
	author={Kostas Oikonomou and Kadangode Ramakrishnan and Robert Doverspike and Angela Chiu and Rakesh Sinha and Miguel Martinez-Heath},
	institution={{}},
	month={February},
	title={{Performability analysis of multi-layer restoration in a satellite network}},
	year=2007,
}