Achieving Network Availability in a Multilayered Protocol Environment

The software/hardware is available now to quickly construct very large networks. These networks contain various layers of connectivity with the possibility of different vendors providing each layer. Each layer may have its own means of operator management and control. The growth of these networks is starting to outstrip the ability of network operators to effectively recognize and attack problems. Future networking with independent microcomputers provide even fewer tools for network support personnel. What should network management software provide the operator in a multilayered multivendor environment, and what role do network protocols play in solving the problems they created? The author will he expressing his own opinion based on his experience with a large IBM SNA network (28 hosts) connected through a privately owned X.25 network.