A lookup discovery service is provided that continuously monitors
associated lookup services and provides information on lookup services of
interest to registered clients. This lookup discovery service is a third
party server that can be used by a client to perform the client's
discovery duties. Thus, if a lookup service does not provide access to a
particular network service of interest inside of the client's multicast
radius, the client can query a lookup discovery service to identify
qualified lookup services anywhere on the enterprise. Additionally, the
lookup discovery service provides an event mechanism with notification
semantics that allows the client to be notified of the arrival of new
lookup services of interest as well as certain changes in the state of the
current lookup services (discarded, rediscovered, etc.) on the network.
