The GigaBit Network Switch Controller (GBNSC) is a process which controls the Washington University Gigabit Switch (WUGS) using in-band ATM control cells. The GBNSC is being developed by the Applied Research Laboratory (ARL) of Washington University in St. Louis. This document describes the design and implementation of the GBNSC and is intended for use by those interested in the functionality of the switch controller as well as developers who may be called on to update or maintain it.

This paper describes the Jammer script language, a scripting language designed for testing of prototype ATM switches designed at Washington University. Jammer provides a flexible, dynamic environment for intelligent prototype switch testing by enabling programmatic bit-level control of registers, tables, and cells within the switch. Jammer Language Description Washington WASHINGTON.UNIVERSITY.IN.ST.LOUIS Applied Research Laboratory 1:0.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 2:0.0 Context . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 3:0.0 Language Overview . . . . . . . . . . . . . . . . . . . . . . . . . .1 3:1:0 Program Constructs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3:1:1 A Basic Script . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3:1:2 Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3:1:3 Variable Declaration...

With the development of ATM technology and increasing deployment of ATM networks, we anticipate a heterogenous environment for an ATM network. Switches and client stations from different vendors, each with potentially different control mechanisms, will be used within the same network. This diversity of control structures introduces great complexity into the development of ATM control software. In this and associated other documents, we propose a software architecture that manages this heterogenous environment. A key aspect of the software design is that the hardware details of a switch and its control mechanism is encapsulated in a low level software module called the Switch Controller (SC). The Node Controller Communication Protocol (NCCP) is presented that allows higher layer software modules to communicate with the SC. The NCCP is general enough to support general multipoint-to-multipoint communications. A general interface to the NCCP, the Node Controller Managed Object (NCMO) is a...

This report describes an atm Multipoint Connection Caching strategy (amcc) to control the explosive growth of traffic within the network and at an endpoint in a large Distributed Interactive Simulation (dis) application such as a battlefield simulation. For very large dis applications with 100,000 entities, the current method of broadcasting information among entities will no longer be feasible due to computational and network bandwidth limitations. Our scheme divides the simulation space into grids and each grid square or a set of grid squares forms a multicast group. Entities join the groups within their perception range and thus, they receive state updates only from entities within their perception range. amcc utilizes the unique capabilities of our dynamic multipoint ATM signaling protocol, CMAP. We have implemented amcc and have successfully demonstrated a small dis battlefield simulation application running over our atm testbed. 1

This document describes the installation, start up and tear down of the GigaBit Network (GBN) software. This software has been designed and is being implemented to control and test the prototype GBN switch[3] being designed and built at Washington University in St. Louis. At the time of this version of this document, the software is still under development, and so this document is subject to change as the software matures.