Using Virtualization to Provide Interdomain QoS-enabled Routing

Verdi, Fábio L.; Magalhães, Mauricio Ferreira; Madeira, Edmundo Roberto Mauro; Welin, A.

doi:10.4304/jnw.2.2.23-32

Cited by 14 publications

(19 citation statements)

References 11 publications

(13 reference statements)

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“…We wish to conclude by drawing attention to the growing importance of the topology abstraction concept in other applications. For example, Kokkinos and Vavarigos [24] use this concept in the context of Grid computing services and Verdi et al [25] discusses this in the context of interdomain QoS routing.…”

Section: Resultsmentioning

confidence: 98%

Topology Abstraction Service for IP-VPNs

Ravindran

Huang

2013

IEEE Trans. Parallel Distrib. Syst.

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VPN service providers (VSP) and IP-VPN customers have traditionally maintained service demarcation boundaries between their routing and signaling entities. This has resulted in the VPNs viewing the VSP network as an opaque entity and therefore limiting any meaningful interaction between the VSP and the VPNs. The purpose of this research is to address this issue by enabling a VSP to share its core topology information with the VPNs through a novel topology abstraction (TA) service which is both practical and scalable in the context of managed IP-VPNs. TA service provides tunable visibility of state of the VSP's network leading to better VPN performance. A key challenge of the TA service is to generate TA with relevant network resource information for each VPN in an accurate and fair manner. We develop three decentralized schemes for generating TAs with different performance characteristics. These decentralized schemes achieve improved call performance, fair resource sharing for VPNs, and higher network utilization for the VSP. We validate the idea of the VPN TA service and study the performance of the proposed techniques using various simulation scenarios over several topologies.

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Section: Resultsmentioning

confidence: 98%

Topology Abstraction Service for IP-VPNs

Ravindran

Huang

2013

IEEE Trans. Parallel Distrib. Syst.

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“…The virtual topology (VT) [1] concept represents the QoS characteristics (e.g. bandwidth, delay and jitter) of a domain.…”

Section: Virtual Topology Servicementioning

confidence: 99%

“…A typical scenario for the VTS is shown in Figure 1. Initially, the client node asks the VTS for a route with a given QoS to a given destination (1). Then, the VTS consults the local BGP table to obtain the available routes (2).…”

Section: Virtual Topology Servicementioning

confidence: 99%

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Using virtual topologies to manage inter‐domain QoS in next‐generation networks

et al. 2009

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SUMMARYRecently, several computer fi elds have turned to virtualization as a way to simplify complex problems. In this context, the Virtual Topology Service (VTS) was created to manage the advertisement and acquisition of virtual topologies (abstractions of the network status of a domain) and their use in inter-domain resource reservation to provide end-to-end quality of service (QoS). As an effort to create new network architectures which could attend current requirements like mobility and context-aware applications and support autonomous, heterogeneous and mobile domains next-generation networks (NGNs) emerged, with Ambient Networks (AN) as one of its instances. With an ever increasing multitude of online applications, end-to-end QoS has become increasingly important, especially for media and real-time uses. In this context, in order to better manage inter-domain QoS in these new networks, better coping with mobile nodes and domains, this work presents a new design and implementation of the VTS, adapted to the AN environment. The new VTS stores resource reservation information to enable the reuse of these reservations when re-establishing QoS after a node/domain movement. This implementation was tested on a real NGN prototype and showed considerable time saving when compared to QoS re-establishment without reusing the reservations.

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“…[15]. The other approach of inter-domain QoS routing solutions is based on the overlay Virtual Topology (VT) solution, which abstracts each domain with a node, represented by the domain service manager, or with several nodes represented by the egress routers from that domain [13]. The VT is formed by a set of virtual links that map the current link state of the domain without showing internal details of the physical network topology.…”

Section: End-to-end Flow Control Architecturementioning

confidence: 99%

Multimedia Content Distribution over Next-Generation Heterogeneous Networks Featuring a Service Architecture of Sliced Resources

Stephanakis

Chochliouros

2012

IFIP Advances in Information and Communication Technology

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Abstract. Recent advancements of IP networks pave the way for Over-the-Top (OTT) applications. Evolved telecom platforms provide revenue potentials via Service Gateways (APIs) on top of VoIP/RCS (IMS), Machine Type Communication (MTC) and Smart Bit pipe approaches. QoS is achieved through over-provisioning in today's access and core networks since there are no flexible mechanisms that are available for end-users to influence the QoS level. Processes for user-demanded and operator-controlled QoS management as well as mechanisms for applications signaling their requirements on the data path into the network are far from being adequate. Novel approaches regarding end-to-end inter-domain flow-control architectures, i.e. network slicing, as well as machine-to-machine (M2M) virtualization platforms that handle such functions as device/communication management, session management and bearer and charging management are emerging promising enhanced multimedia communications and efficient utilization of network resources. They promote cloud services and they integrate the computer word into next generation telecommunications.

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Using Virtualization to Provide Interdomain QoS-enabled Routing

Cited by 14 publications

References 11 publications

Topology Abstraction Service for IP-VPNs

Topology Abstraction Service for IP-VPNs

Using virtual topologies to manage inter‐domain QoS in next‐generation networks

Multimedia Content Distribution over Next-Generation Heterogeneous Networks Featuring a Service Architecture of Sliced Resources

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