TY - JOUR
T1 - LiteVisor
T2 - A network hypervisor to support flow aggregation and seamless network reconfiguration for VM migration in virtualized software-defined networks
AU - Yang, Gyeongsik
AU - Yu, Bong Yeol
AU - Kim, Seong Mun
AU - Yoo, Chuck
N1 - Funding Information:
This work was supported by Institute for Information & Communications Technology Promotion (IITP) grant funded by the Korean government (MSIT) (No. 2015-0-00288, Research of Network Virtualization Platform and Service for SDN 2.0 Realization, and No.2015-0-00280, (SW Starlab) Next generation cloud infra-software toward the guarantee of performance and security SLA).
Publisher Copyright:
© 2013 IEEE.
PY - 2018
Y1 - 2018
N2 - Network virtualization based on software-defined networking (SDN) has become a necessary technology to provide various services in cloud datacenters. Although many network hypervisors have been proposed to support SDN-based network virtualization, their forwarding techniques excessively consume the limited ternary contents addressable memory of OpenFlow-enabled switches. Moreover, they do not consider network reconfiguration after virtual machine migration. In this paper, we propose LiteVisor, that resolves the two problems mentioned above. It develops the Locator, Identifier, and Tenant sEparating (LITE) scheme. The LITE-based forwarding enables flow aggregation that reduces switch memory consumption. In addition, LiteVisor provides seamless network reconfiguration that does not require tenant controllers to be aware of virtual machine migration based on LITE. We evaluate LiteVisor in terms of the number of flow table entries and network reconfiguration time and compare it with OpenVirteX that is an open-source network hypervisor. The results show that the number of flow rules decreases by up to eight times compared with OpenVirteX in a fat-tree topology. We also demonstrate the seamless network reconfiguration of LiteVisor in the experiments and present the results of the reconfiguration time by the topology size and packet sending interval of hosts.
AB - Network virtualization based on software-defined networking (SDN) has become a necessary technology to provide various services in cloud datacenters. Although many network hypervisors have been proposed to support SDN-based network virtualization, their forwarding techniques excessively consume the limited ternary contents addressable memory of OpenFlow-enabled switches. Moreover, they do not consider network reconfiguration after virtual machine migration. In this paper, we propose LiteVisor, that resolves the two problems mentioned above. It develops the Locator, Identifier, and Tenant sEparating (LITE) scheme. The LITE-based forwarding enables flow aggregation that reduces switch memory consumption. In addition, LiteVisor provides seamless network reconfiguration that does not require tenant controllers to be aware of virtual machine migration based on LITE. We evaluate LiteVisor in terms of the number of flow table entries and network reconfiguration time and compare it with OpenVirteX that is an open-source network hypervisor. The results show that the number of flow rules decreases by up to eight times compared with OpenVirteX in a fat-tree topology. We also demonstrate the seamless network reconfiguration of LiteVisor in the experiments and present the results of the reconfiguration time by the topology size and packet sending interval of hosts.
KW - Computer network management
KW - VM migration
KW - network reconfiguration
KW - network virtualization
KW - software defined networking
UR - http://www.scopus.com/inward/record.url?scp=85055140425&partnerID=8YFLogxK
U2 - 10.1109/ACCESS.2018.2877416
DO - 10.1109/ACCESS.2018.2877416
M3 - Article
AN - SCOPUS:85055140425
SN - 2169-3536
VL - 6
SP - 65945
EP - 65959
JO - IEEE Access
JF - IEEE Access
M1 - 8502071
ER -