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by Geoffrey G. Xie, Debra Hensgen, Taylor Kidd, John Yarger
http://www.cs.nps.navy.mil/people/faculty/xie/PIB.ps
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Abstract:
The current network architecture is based predominantly on stand-alone routers. It is becoming overtaxed with the introduction of integrated services. This observation has led us to propose a Server and Agent based Active network Management (SAAM) architecture that scales well with integrated services [14]. SAAM relieves individual routers from most routing and network management tasks. Instead, it employs a small number of dedicated servers to perform these tasks on behalf of the routers. In particular, these servers maintain a path information base (PIB) with which network functions, such as QoS routing and re-routing of real-time flows, can be efficiently implemented. In this paper, we focus on the design of an efficient and flexible PIB. We will not only present our design rational and the specification of a concrete PIB building algorithm, but will also describe some important observations concerning PIBs that we have obtained by examining the statistics of sample PIBs built from three example network configurations. These observations include: (1) a single regional PIB supporting a network in the range of 20-30 routers can be maintained on a PC workstation, and (2) a PIB can provide efficient support for any QoS routing algorithm.
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