SNT Environment Reliability
The reliability information retained by the
MICS Network Analyzer
is written to SMF by Tivoli NetView Hardware Monitor/NPDA and NPM, NetMaster
NEWS, and NetSpy
.rm
The NetView Hardware Monitor and
NetMaster
NEWS reliability data consists of statistics, events, and alerts. Statistics are temporary errors and traffic data. Events include permanent errors and statistics whose error-to-traffic ratios exceed installation-defined thresholds. Alerts are any conditions that require immediate operator attention. NetView Hardware Monitor/NPDA and NetMaster
recording filters determine which network occurrences are classified as events or alerts. The reliability information from NPM network data and NetSpy
NCP interface data consists of counts for network errors (for example, time-out-to-poll), and the number of characters and PIUs that are retransmitted by the NCP.Note that reliability information is NOT availability information. While permanent errors resulting in outages of many of the hardware and software components of the network are recorded in the SNTNEF File, there is no corresponding notation of normal activation or deactivation. Thus, availability reporting can be done only by accessing information, such as network logs, which are outside the scope of the
MICS
Network.The following sections suggest key data elements, exception conditions, reports, and sample analysis which may be helpful in the management of reliability: