Network management and performance monitoring at SLAC

The physical network plant and everything attached to it, including the software running on ``computers`` and other peripheral devices is the {bold system}. Subjectively, the ultimate measurers of {bold system} performance are the users and their perceptions of the performance of their networked applications. The performance of a {bold system} is affected by the physical network plant (routers, bridges, hubs, etc.) as well as by every ``computer`` and peripheral device that is attached to it, and the software running on the computers and devices. Performance monitoring of a network must therefore include computer systems and services monitoring as well as monitoring of the physical network plant. This paper will describe how this challenge has been tackled at SLAC, and how, via the World Wide Web, this information is made available for quick perusal by concerned personnel and users.