Integrating VXLAN with Avaya VENA Fabric Connect
VXLAN, VMware’s attempt at creating a next-generation VLAN technology, is intended to help businesses maximize the effectiveness of their server virtualization activities. Officially, “Virtual Extensible LAN (VXLAN) works by creating Layer 2 logical networks that are encapsulated in standard Layer 3 IP packets. A ‘Segment ID’ in every frame differentiates the VXLAN logical networks from each other without any need for VLAN tags. This allows very large numbers of isolated Layer 2 VXLAN networks to co-exist on a common Layer 3 infrastructure.” The intent is to build virtual domains on top of a common networking and virtualization infrastructure, with these virtual domains having complete isolation from each other and the underlying network. This is the theory anyway. However, the initial VXLAN specification was based on some rather conventional networking concepts and did not make allowance for groundbreaking work that had already been undertaken within the IEEE in defining Shortest Path Bridging (SPB).