| In military networks, Precedence and Preemption (P&P) and Quality of Service (QoS) are both required. QoS re-fers to meeting the performance requirements of an appli-cation (packet delay, packet loss, packet delay variation, service availability, connection set up time, connection acceptance ratio, etc.) while P&P refers to meeting the QoS requirements of the highest importance applications under congestion conditions, in which there are not enough network resources to satisfy the QoS requirements of all applications. In particular, Preemption refers to taking away network resources from a lower Precedence application in order to give the resources to a higher Precedence application. Per Hob Behaviors (PHBs) are used by network nodes to implement QoS. A Service Level Agreement (SLA) is a QoS contract that is used to assure that the QoS requirements of admitted applications are met by the network transport for defined traffic profiles. SLAs and P&P are often perceived to have an adversarial relationship. This paper proposes a way to resolve this conflict by making QoS PHBs Precedence-Aware, while remaining agnostic of the specific PHB mechanism. |
| Dr. Deborah Goldsmith is a Principal Networking and Distributed Systems Engineer in the Maritime Information Technology and Engineering Department at MITRE Corporation. Prior to joining MITRE in February 1992, Dr. Goldsmith was an Instructor of Mathematics at the University of Chicago and an Assistant Professor of Mathematics at the University of Michigan, Ann Arbor. She has worked in industry on secure software/operating systems (O/Ss) and cellular data packet data (CDPD) standards. She has a Ph.D. in Mathematics from Princeton University and a Ph.D. in Computer Science from the University of California, San Diego. Currently she is a Deputy Project Leader of a consolidated project supporting the Navy PEO for C4I & Space. Within the project, Dr. Goldsmith leads the IP Networking and Quality of Service (QOS) Working Group for the Navy and participates in the MITRE End-End Engineering (ESE) tasking from the Office of the Secretary of Defense (OSD/NII) as one of the Navy networking representatives. She has been one of the principal investigators on the Adaptive Bandwidth Management System internal research project at MITRE. In addition to numerous mathematics publications, Dr. Goldsmith has presented at MILCOM in 1999 and again in 2001 in the area of communications and networking. |