LAN switching

Abstract: Concurrent processing depends on interconnection networks for communication among processors and memory modules. Various network topologies and switching strategies are covered here.

Abstract: An overview is given of a system designed to handle a heterogeneous and dynamically changing mix of applications. It is based on fiber-optic transmission systems and high-performance packet switching and can handle applications ranging from low-speed data to voice to full-rate video. A novel feature is a flexible multipoint connection capability suitable for broadcast and conferencing applications. The architecture of a switching systems that can be used to support this network is described. >

Abstract: Telecommunication networks are experiencing a dramatic increase in demand for capacity, much of it related to the exponential takeup of the Internet and associated services. To support this demand economically, transport networks are evolving to provide a reconfigurable optical layer which, with optical cross-connects, will realize a high-bandwidth flexible core. As well as providing large capacity, this new layer will be required to support new services such as rapid provisioning of an end-to-end connection under customer control. The first phase of network evolution, therefore, will provide a circuit-switched optical layer characterized by high capacity and fast circuit provisioning. In the longer term, it is currently envisaged that the bandwidth efficiency associated with optical packet switching (a transport technology that matches the bursty nature of multimedia traffic) will be required to ensure economic use of network resources. This article considers possible network application scenarios for optical packet switching. In particular, it focuses on the concept of an optical packet router as an edge network device, functioning as an interface between the electronic and optical domains. In this application it can provide a scalable and efficient IP traffic aggregator that may provide greater flexibility and efficiency than an electronic terabit router with reduced cost. The discussion considers the main technical issues relating to the concept and its implementation.

Abstract: 1. Integrated Broadband Services and Networks-An Introduction.- I: SWITCHING THEORY.- 2. Broadband Integrated Access and Multiplexing.- 3. Point-to-Point Multi-Stage Circuit Switching.- 4. Multi-Point and Generalized Circuit Switching.- 5. From Multi-Rate Circuit Switching to Fast Packet Switching.- 6. Applying Sorting for Self-Routing and Non-Blocking Switches.- II: TRAFFIC THEORY.- 7. Terminal and Aggregate Traffic.- 8. Blocking for Single-Stage Resource Sharing.- 9. Blocking for Multi-Stage Resource Sharing.- 10. Queueing for Single-Stage Packet Networks.- 11. Queueing for Multi-Stage Packet Networks.