TY - JOUR
T1 - Optimal and dynamic virtual datacenter provisioning over metro-embedded datacenters with holistic SDN orchestration
AU - Cao, Xiaoyuan
AU - Popescu, Ion
AU - Chen, Gang
AU - Guo, Hongxiang
AU - Yoshikane, Noboru
AU - Tsuritani, Takehiro
AU - Wu, Jian
AU - Morita, Itsuro
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017/4/1
Y1 - 2017/4/1
N2 - Conventional mega datacenter (DC) lacks flexibility and has poor service connectivity for users faraway. Therefore, the metro-embeded DC architecture has been introduced to deliver more reliable and flexible services with less access latency. For fine-grained all-optical switching ability and high bandwidth connection, optical burst switching (OBS) ring is deployed inside the micro-DCs (mDC) and OBS over wavelength switched optical network paradigm is used for inter-mDC communication. Meanwhile, hierarchical SDN control is employed to virtualize and holistically coordinate the distributed mDCs and the metro network slices into reconfigurable virtual DC (VDC). Optimal VDC provisioning based on an integer linear programming (ILP) formulation is also developed in the SDN control plane to provide services with minimum latency and traffic load. A dynamic VDC provisioning algorithm based on partial ILP is further proposed to reconfigure the VDC with reduced complexity considering the user and resource dynamics. Experimental demonstrations conducted on the implemented metro-embedded DC prototype testbed show that optimal and fast VDC provisioning is realized based on the proposed ILP, while dynamic VDC reconfiguration makes sure that VDC is adjusted accordingly with the change of user location and resource requirement.
AB - Conventional mega datacenter (DC) lacks flexibility and has poor service connectivity for users faraway. Therefore, the metro-embeded DC architecture has been introduced to deliver more reliable and flexible services with less access latency. For fine-grained all-optical switching ability and high bandwidth connection, optical burst switching (OBS) ring is deployed inside the micro-DCs (mDC) and OBS over wavelength switched optical network paradigm is used for inter-mDC communication. Meanwhile, hierarchical SDN control is employed to virtualize and holistically coordinate the distributed mDCs and the metro network slices into reconfigurable virtual DC (VDC). Optimal VDC provisioning based on an integer linear programming (ILP) formulation is also developed in the SDN control plane to provide services with minimum latency and traffic load. A dynamic VDC provisioning algorithm based on partial ILP is further proposed to reconfigure the VDC with reduced complexity considering the user and resource dynamics. Experimental demonstrations conducted on the implemented metro-embedded DC prototype testbed show that optimal and fast VDC provisioning is realized based on the proposed ILP, while dynamic VDC reconfiguration makes sure that VDC is adjusted accordingly with the change of user location and resource requirement.
KW - Metro-embedded datacenter
KW - Optical burst switching
KW - Software-defined networking
KW - Virtual datacenter provisioning
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U2 - 10.1016/j.osn.2016.10.003
DO - 10.1016/j.osn.2016.10.003
M3 - Article
AN - SCOPUS:84997530151
SN - 1573-4277
VL - 24
SP - 1
EP - 11
JO - Optical Switching and Networking
JF - Optical Switching and Networking
ER -