A relocation-based heuristic for restoring optical cloud services
2014 (English)In: 2014 13th International Conference on Optical Communications and Networks, 2014Conference paper (Refereed)
Optical clouds allow for an integrated management of optical transport and cloud resources (e.g., storage and computing resources running on datacenters). In this paradigm the concept of service relocation (i.e., the ability to re-allocate to a different datacenter node an already provisioned cloud service) offers a new way to restore the network upon failure. This paper presents a heuristic (called H-RELOCATION) based on the service relocation concept to be used for the dynamic restoration of optical cloud services. Upon the occurrence of a network failure, H-RELOCATION solves the routing and resource (i.e., transport plus cloud) allocation problem for each disrupted cloud service allowing, if necessary, to relocate some cloud services to different datacenter nodes. The proposed strategy is benchmarked against two optimal restoration strategies based on Integer Linear Programming (ILP) formulations, the first one without and the second one with the ability to use the service relocation idea. Simulation results show that H-RELOCATION offers performance (i.e., blocking probability, restorability levels and number of required relocations) very close to the optimum, offering on the other hand, a significant reduction in the processing time required for each successfully restored cloud service.
Place, publisher, year, edition, pages
Blocking probability, Image reconstruction, Integer programming
IdentifiersURN: urn:nbn:se:kth:diva-168524DOI: 10.1109/ICOCN.2014.6987081ScopusID: 2-s2.0-84920862344ISBN: 978-147997218-0OAI: oai:DiVA.org:kth-168524DiVA: diva2:818716
2014 13th International Conference on Optical Communications and Networks, ICOCN 2014; Suzhou; China
QC 201506092015-06-092015-06-042015-06-09Bibliographically approved