Bandwidth allocation, traffic control and topology design in ATM overlay networks

Monteiro, José Augusto Suruagy; Fotedar, S.; Gerla, Mário

doi:10.1109/glocom.1994.513009

Cited by 4 publications

(1 citation statement)

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“…The results, as we have seen, are higher costs for VCC setup and VPC maintenance.' However, we can also achieve greater multiplexing gain [60] (therefore lower resource cost) and increased flexibility in establishing VCCs [17]. Ahn et al [17] observe that shorter VPCs result in lower call blocking probabilities and shorter physical VCC routes.…”

Section: Design Algoiifhmmentioning

confidence: 99%

Resource management with virtual paths in ATM networks

Friesen

Harms²,

Wong³

1996

IEEE Network

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In an ATM network, a virtual path connection (VPC) is a labeled path which can be used to transport a bundle of virtual channel connections (VCCs) and to manage the resources used by these connections. Using the virtual path concept, the network is organized as a collection of VPCs which form a VPC, or logical, overlay network. If the VPCs are permanent or semi-permanent and have reserved capacity, establishing new VCCs requires simple connection admission decisions at the VPC terminators of existing VPCs. This would enable faster connection establishment since transit nodes are not involved in the connection setup. The virtual path concept also allows the possibility of segregating traffic types according to quality of service requirements. However, the extent to which VPC provisioning i s able to improve network efficiency is dependent on the resource management decisions that determine the VPC topology and capacity allocations. This is a survey article on resource management using virtual paths in an ATM network. Of interest are techniques which modify the VPC topology and capacity assignments in order to adapt to changing traffic conditions and possible network failures. The resource management activities employed to facilitate such adaptation can be categorized by the timescale on which they operate. O n the shortest timescale are strategies for dynamically making minor changes to the VPC topology or capacity assignments. On a somewhat longer timescale are strategies for making more widespread modifications to the VPC overlay network. This would be appropriate for traffic changes based on time of day and for recovering from network failures. Finally, on an even longer timescale, strategies may be employed to design a general VPC overlay network, to be used at startup or after maior network upgrades. Solutions to VPC resource management for each of these timescales are discussed.

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Section: Design Algoiifhmmentioning

confidence: 99%