End-to-end WAN service availability Export

@article{citeulike:945441, abstract = {This paper seeks to understand how network failures affect the availability of service delivery across wide-area networks (WANs) and to evaluate classes of techniques for improving end-to-end service availability. Using several large-scale connectivity traces, we develop a model of network unavailability that includes key parameters such as failure location and failure duration. We then use trace-based simulation to evaluate several classes of techniques for coping with network unavailability. We find that caching alone is seldom effective at insulating services from failures but that the combination of mobile extension code and prefetching can improve average unavailability by as much as an order of magnitude for classes of service whose semantics support disconnected operation. We find that routing-based techniques may provide significant improvements but that the improvements of many individual techniques are limited because they do not address all significant categories of network failures. By combining the techniques we examine, some systems may be able to reduce average unavailability by as much as one or two orders of magnitude.}, author = {Dahlin, M. and Chandra, B. B. V. and Gao, Lei and Nayate, A.}, citeulike-article-id = {945441}, citeulike-linkout-0 = {http://dx.doi.org/10.1109/TNET.2003.810312}, citeulike-linkout-1 = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1194825}, doi = {10.1109/TNET.2003.810312}, journal = {Networking, IEEE/ACM Transactions on}, keywords = {availability}, number = {2}, pages = {300--313}, posted-at = {2007-09-05 06:17:22}, priority = {0}, title = {End-to-end WAN service availability}, url = {http://dx.doi.org/10.1109/TNET.2003.810312}, volume = {11}, year = {2003} }

TY - JOUR ID - citeulike:945441 L3 - citeulike-article-id:945441 N2 - This paper seeks to understand how network failures affect the availability of service delivery across wide-area networks (WANs) and to evaluate classes of techniques for improving end-to-end service availability. Using several large-scale connectivity traces, we develop a model of network unavailability that includes key parameters such as failure location and failure duration. We then use trace-based simulation to evaluate several classes of techniques for coping with network unavailability. We find that caching alone is seldom effective at insulating services from failures but that the combination of mobile extension code and prefetching can improve average unavailability by as much as an order of magnitude for classes of service whose semantics support disconnected operation. We find that routing-based techniques may provide significant improvements but that the improvements of many individual techniques are limited because they do not address all significant categories of network failures. By combining the techniques we examine, some systems may be able to reduce average unavailability by as much as one or two orders of magnitude. IS - 2 JF - Networking, IEEE/ACM Transactions on EP - 313 TI - End-to-end WAN service availability VL - 11 SP - 300 KW - availability AU - Dahlin, M AU - Chandra, BBV AU - Gao, Lei AU - Nayate, A PY - 2003/// UR - http://dx.doi.org/10.1109/TNET.2003.810312 ER -