Abstract

This project evaluates Industrial Ethernet performance under different circumstances using network simulation and proposes to build a scalable secured network by network virtualization. In the first case, a flat unplanned LAN is studied with uncast transmission. It reveals that any user inside the LAN can reach other LAN components, services. Also some network protocols purposefully generate broadcast packets which are being forwarded by the innate function of the hubs, bridges, repeaters and switches. Such broadcast packets waste CPU resources of all the LAN devices and network bandwidth is inefficiently managed. It is proposed to control broadcast by grouping LAN segments/ devices based on business logic or as required by organization. Putting each group in a separate Virtualized LAN confines broadcast packets within their domain increasing network performance and security. For handling external traffic and inter Virtualized LAN communication the need for Layer 3 device is mandatory. If such external/ IP traffic is handled by a single Layer 3 device, there may be chance for single point of failure for entire network. Network may also get congested if that L3 device is overloaded and network will not be robust. We propose to add redundant Layer 3 devices and deploy a network control scheme called distributed multiple routing, which dynamically controls the packet exchange points [inter Virtualized LAN traffic points] for each Virtualized LAN. We propose to build well planned, secured, scalable, resilient network by adding redundancy at Protocol level & to load balance traffic thereby network bandwidth and computing elements’ resources are used optimally.

Paper Details