Design And Implementation Of Hardware Accelerated Vtep In Datacenter Networks

VXLAN ( Virtual eXtensible Local Area Network) is an edge-overlay model that uses L2-in-L3 tunneling protocol. It has attracted attentions for multi-tenant datacenter networks. For the deployment of VXLAN in legacy networks, networks can include VXLAN gateways which forward traffic between VXLAN and non-VXLAN environments. This paper proposes the design of VXLAN gateways which are not in servers, but in physical devices. Additionally, we show a hardware accelerated VTEP ( VXLAN tunnel end point) that can connect virtual machines to VXLAN segments without software VTEPs, such as OVS ( Open vSwitch) VTEPs. The performance result of the hardware accelerated VTEPs is more efficient than software VTEPs' with regard to CPU consumption and traffic throughput of servers.