Switching and Traffic Theory for Integrated Broadband Networks
Switching and Traffic Theory for Integrated Broadband Networks
On noninterruptive rearrangeable networks
IEEE/ACM Transactions on Networking (TON)
Rearranging algorithms for log2(N, 0, P)switching networks with even number of stages
HPSR'09 Proceedings of the 15th international conference on High Performance Switching and Routing
Insomnia in the access: or how to curb access network related energy consumption
Proceedings of the ACM SIGCOMM 2011 conference
Live traffic monitoring with tstat: capabilities and experiences
WWIC'10 Proceedings of the 8th international conference on Wired/Wireless Internet Communications
Computer Networks: The International Journal of Computer and Telecommunications Networking
| Hi-index | 0.00 |
In today's access networks, the permutation of circuits connecting the subscriber lines to Plain Old Telephone Service (POTS) and to Digital Subscriber Line Access Multiplexers (DSLAMs) occurs in the Main Distribution Frame (MDF) and is still manually configured. However, new market regulations and new policies adopted by operators require increasingly more frequent permutations, making the manual configuration activity particularly expensive. Very recently, Automated MDFs (AMDFs) have been developed to provide inexpensive and almost real-time switching capability. Our study, based on more than 50years of research activities on architectures for circuit switching, is focused on overcoming the limits of classical architectures. In fact, strictly non-blocking multistage networks are too expensive, as a consequence of the large number of ports they require (sometimes exceeding 100,000). In addition, rearrangeable multistage networks can temporarily interrupt active circuits, affecting the performance of ADSL subscriber lines. As a possible solution to these problems, we propose the design of AMDFs based on Non-Interruptive Rearrangeable (NIR) networks. We show how to optimize the routing control to minimize the setup time of a circuit and to exploit output grouping. We believe that the solution described above is not only relevant for the theory of multistage interconnection networks, but also for the design and operation of large AMDFs.