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Overlay-based network virtualization has been getting attention to realize multi-tenant datacenters. But the multi-tenant property makes broadcast/multicast communications on virtual networks difficult. In this paper, we propose TE-Cast (Topology Embedded xCast) that supports generic broadcast/multicast communications on virtual networks. Unlike existing similar methods, TE-Cast can reduce traffic...
Many distributed systems use a replication mechanism for reliability and availability. On the other hand, developers have to consider minimum consistency requirement for each application. Therefore, a novel replication protocol that supports multiple consistency models is required. Multi-Consistency Data Replication (McRep) is a middleware-based replication protocol and can support multiple consistency...
The notion of Software-Defined Networking (SDN) has already been introduced into cloud datacenter networks for provisioning virtual network environment. Network virtualization of today is generally achieved by L2-in-L3 tunneling protocols like VXLAN (Virtual eXtensible LAN) and NVGRE (Network Virtualization using Generic Routing Encapsulation) in public cloud datacenters. Some leading production packages...
Network Virtualization Overlays (NVO3) provides multi-tenancy services in cloud data centers with existing networking equipment. IP tunneling is an essential technology to logically separate each virtual traffic, in particular, Stateless Transport Tunneling (STT) is considered to achieve better performance using TCP Segmentation Offload (TSO) feature. Currently, there is no openly available implementation...
Network virtualization is an essential technology for cloud datacenters that provide multi-tenancy services. Cutting-edge SDN-enabled datacenters have introduced an edge-overlay (distributed tunneling) model to construct virtual tenant networks. The edge-overlay model generally uses L2-in-L3 tunneling protocols, and VXLAN is a representative of such protocols. However, the tunneling-based edge-overlay...
In current SDN paradigm, an edge-overlay (distributed tunneling) model using L2-in-L3 tunneling protocols, such as VXLAN, has attracted attentions for multi-tenant data center networks. The edge-overlay model can establish rapid-deployment of virtual networks onto existing traditional network facilities, ensure flexible IP/MAC address allocation to VMs, and extend the number of virtual networks regardless...
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