Implementation of VxLAN Tunnel Application for Software Defined Networking Controller

Abstract

Virtual eXtensible LAN protocol (VxLAN) is upcoming Network virtualization tech- nology. Using VxLAN we can overcome logical network identifier limitation imposed by VLAN.According to the IEEE 802.1Q standard, traditional VLAN identifiers are 12-bits long, this naming limits networks to 4094 VLANs. The VXLAN protocol overcomes this limitation by using a longer logical network identifier that allows more VLANs and, therefore, more logical network isolation for large networks such as clouds that typically include many virtual machines. VxLAN is Overlay network technology,which is able to provide layer2 service over layer3. Overlay network is created by encapsulating (tunneling) Ethernet frames in a VXLAN packet that includes IP addresses. Devices that support VXLANs are called virtual tunnel endpoints (VTEPs) they can be end hosts or network switches or routers. So we can say VxLAN is able to provide enterprise specific application on top of internet with security concern. Thesis explores the possibilities of VxLAN , OpenFlow , Ryu and Open vSwitch and Mininet for Virtual eXtensible LAN tunnel implementation in Software Defined Network (SDN). In this thesis my goal is to develop a SDN controller application for VxLAN tunnel.Here, I have chosen RYU as SDN Controller to develop SDN application which is compatible with OpenFlow version 1.3 .