Combat Information
Transport System Reliability and Availability Performance
This paper describes the network modeling techniques that were developed
to assess the reliability and availability performance of the Combat
Information Transport System (CITS). CITS is the backbone network that
provides high-capacity transport of data, voice, and video for all active
duty and reserve Air Force bases. The model includes the network topology,
the configuration and interconnection of network hardware, reliability
and maintainability design predictions for all network hardware, and
the expected network operational maintenance and sparing policies. The
model provides an estimate of the mean time between critical failure
(MTBCF), mean time between corrective maintenance action (MTBCMA), and
availability performance of the CITS network. In addition, this paper
describes how this modeling effort impacted the network design process
and provides a summary of lessons learned. Finally, this paper will
address simulation-based modeling efforts that are being developed,
and how these can be used to enhance reliability and availability performance
for highly-fault tolerant networks such as CITS.
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