Use Of Virtual Paths Research Articles

Broadband ISDN resource management: the role of virtual paths

It is shown that virtual paths will be a substantial component of a resource management control hierarchy for the B-ISDN. Other components of this hierarchy include connection admission, usage parameter control, and reactive congestion control. An overview of this control hierarchy is provided. The role of virtual paths for cost-effective resource management and connection admission control in the B-ISDN is examined. Some strategies for reserving capacity on virtual paths are identified, and the use of virtual paths to simplify connection admission control is discussed. The reservation of capacity on virtual path connections is shown to result in substantial network cost savings for the case study considered. >

Broadband ISDN resource management

This paper describes techniques for the management of traffic carrying capacity and control mechanisms in the Broadband ISDN and presents a cost-benefit analysis to determine policies for reserving capacity on virtual paths. Significant savings in total network cost can result from the use of virtual paths.

Dynamic capacity management in the BISDN

AbstractUse of virtual paths (VPs) in the broadband ISDN (BISDN) presents network operators with the ability to make processing intensive resource management decisions for flows of traffic instead of individual connections. Altering the amount of capacity assigned to different VPs provides the ability to reconfigure the network dynamically to respond to changes in traffic demand. This paper studies the dynamic behaviour of some algorithms for assigning capacity to VPs for a range of time‐varying offered traffic inputs.

Management of capacity and control in broadband ISDN

AbstractThe trend towards integration of services onto a single network and the addition of accompanying control features has led to an increase in the complexity of functional signalling protocols. A continuing dramatic reduction in the cost of traffic‐carrying capacity has meant that call control costs are becoming an increasingly significant component of the total network cost. In BISDN, the support of many diverse services may result in an excessive control cost. To avoid this potential problem, virtual paths may be used. Capacity may be reserved on virtual paths to simplify the set‐up procedure for individual calls. One benefit of this approach is that the cost of establishing a virtual path is shared among all individual connections which subsequently use it. However, this reduced control cost comes at the expense of installing additional traffic carrying capacity. This paper describes techniques for the management of traffic carrying capacity and control mechanisms in BISDN and presents a cost‐benefit analysis to determine policies for reserving capacity on virtual paths. Significant savings in the total BISDN cost can result from the use of virtual paths.