We propose a self-stabilizing asynchronous phase synchronization protocol for uniform unidirectional rings. Consider applications with phase bound K, i.e., the phases are phase 0, phase 1, ...; phase K-1, phase 0, phase 1, etc. Under the protocol, when the ring is stabilized, it satisfies the following criterion: No node begins to execute phase (k+1) mod K until all nodes have executed phase k, and after all nodes have executed their phase k, each node eventually executes phase (k+1) mod K. Besides the variable used to denote the phase that a node is working on, each node maintains only one auxiliary variable with b states, where b can be any number greater than or equal to the ring size. Provided that K and b satisfy the limitation: K/spl times/b>n(b-1), the proposed protocol is correct under the parallel model and takes at most 2(K/spl times/b) rounds to stabilize.

The rapid adoption of the SNMP standard is creating complex new competitive challenges for the traditional providers of LAN and internet management. An emerging strategy among some system and network vendors, is the adaptation of a platform approach to develop custom applications. Network management platform provides an environment in which network management software can be written quickly, and integrated with other management software easily. This paper describes the management problems in a multivendor environment, user requirements for management, the facilities of a management platform, and introduces an application of the management platform KView II. KView II consists of two main tools: the panel editor, which is a graphic editor system for creating and editing graphical representations of the LAN interconnection devices; and the device manager, a value-added application that tightly integrated with HP Open View, providing the network administrator monitoring and control facilities.>