Journal of High Speed Networks - Volume 2, issue 2

Authors: Gburzyński, Pawel | Maitan, Jacek

Article Type: Research Article

Abstract: We introduce MNA (Multigrid Network Architecture) – a networking concept aimed at applications calling for very high transmission rates (of the order of gigabits per second). An MNA network is a collection of photonic switches linked by optical channels. A switch is responsible for relaying incoming packets along the best available routes to their destinations. Packets that cannot be relayed optimally are deflected, i.e., relayed along suboptimal paths. The technology for building MNA switches has been developed in Lockheed Palo Alto Research Lab, [20]-[22]. In this paper, we discuss the logical aspects of MNA, present a model for investigating the …performance of MNA in regular topologies, and apply this model to a number of network configurations. Show more

Keywords: Switched Networks, Deflection Routing, Optical Networks, Gigabit Network Architectures, Manhattan-Street Networks

DOI: 10.3233/JHS-1993-2201

Citation: Journal of High Speed Networks, vol. 2, no. 2, pp. 99-131, 1993

Authors: Kostick, Deirdre | Tesink, Kaj

Article Type: Research Article

Abstract: Switched Multi-megabit Data Service (SMDS) is a high-performance, public, packet-switched data service. Offered as a public network equivalent of a MAC level service, the datagram transport offered by SMDS is as easily integrated into existing networking protocol architectures as Local Area Network (LAN) or Metropolitan Area Network (MAN) technologies such as Ethernet and Fiber Distributed Data Interface (FDDI). A Customer Network Management (CNM) service has been defined to be offered in conjunction with SMDS. SNMP has been selected as the subscriber access method for the CNM service, which because of the wide acceptance of SNMP, allows for easy integration of …the CNM service into the overall management of customer networks. As a public service, SMDS CNM requires special considerations in the area of security. This paper discusses these considerations, and describes the services and mechanisms that have been defined for secure access to SMDS SNM. Show more

Keywords: SMDS, Customer Network Management, Security, SNMP, MD5, DES

DOI: 10.3233/JHS-1993-2202

Citation: Journal of High Speed Networks, vol. 2, no. 2, pp. 133-144, 1993

Authors: Aly, Khaled A. | Dowdt, Patrick W.

Article Type: Research Article

Abstract: This paper proposes and evaluates two fast packet switching architectures based on time-division multiplexed integrated photonic fabrics. The architectures are targeted towards low-latency inter-node switching and intra-node routing in high-speed networks. The inter-node switch achieves output packet queueing via asynchronous time-division multiplexing a strictly-nonblocking photonic fabric. Buffer behavior is analyzed at both input and output stages to .determine the effect of varying the switching bandwidth on the performance metrics (delay, throughput, and packet loss probability). Analysis is performed for finite switch dimensions by obtaining upper and lower bounds on the packet loss at input. The dependence of finite output buffer …latency and overflow probability on the normalized switching bandwidth is examined. The intra-node trunk traffic router consists of a passive optical coupler followed by an active routing stage. For this architecture, both synchronous and asynchronous time-division multiplexing modes are modeled and analyzed to obtain expressions for corresponding packet buffering delay and total switching latency. The router is shown to saturate at the waiting time singularity of its input (or output) buffers, given by the ratio of the switching bandwidth to the dimension. Show more

Keywords: Fast Packet Switching, Photonic Switching, High-Speed Networks, Performance Evaluation

DOI: 10.3233/JHS-1993-2203

Citation: Journal of High Speed Networks, vol. 2, no. 2, pp. 145-168, 1993