Network engineering-Control of dynamic link topology in user networks

Cheng, Lily; Ellson, J.; Jukan, Admela; Lamy, Patrice; Varma, Eve L.

doi:10.1002/bltj.10054

Cited by 15 publications

(7 citation statements)

References 5 publications

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“…Efforts to counter over-provisioning of IP links can be categorized into two complimentary approaches: Traffic Engineering(TE) and Network Engineering(NE) [2]. Whereas traffic engineering attempts to optimize the routing of IP traffic, network engineering adds additional capacity to the IP network when TE mechanisms cannot cope with increasing traffic.…”

Section: Related Work and Our Contributionmentioning

confidence: 99%

Effective Usage of Dynamic Circuits for IP Routing

Chamania

Caria

Jukan

2010

2010 IEEE International Conference on Communications

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The Internet is susceptible to congestion due to progressively increasing traffic as well as short-lived traffic surges. Traditional mechanisms to counter these effects overprovision the IP network to a significant degree. At the same time, the advent of dynamic circuits in L2/L1 networks has fueled the research in the area of network engineering which deals with the ability to add capacity in the higher layer (IP) by establishing dynamic circuits in the lower layers. However, effective usage of dynamic circuits is a challenge, as they can lead to IP routing instabilities. We present an approach wherein IP bypass links are established using dynamic circuits to alleviate congestion while keeping the routing stable in the IP layer. Proposed is an ILP based approach which computes the optimal set of circuits with and without the knowledge of the traffic matrix in the IP layer. The results show that even without the knowledge of the traffic matrix, the proposed method computes only a marginally higher number of bypasses, albeit at a higher capacity.

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Section: Related Work and Our Contributionmentioning

confidence: 99%

Effective Usage of Dynamic Circuits for IP Routing

Chamania

Caria

Jukan

2010

2010 IEEE International Conference on Communications

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“…In this case, proactive prediction of IP traffic demands, coupled with ranking the most effective optical transport network configuration changes (consistent with the timescale of midterm packet traffic pattern variations to maintain packet network routing stability), can be used to drive "where" and "when" to trigger the appropriate addition, modification, or deletion of particular optical transport network connections [5] via optical control plane signaling and routing protocols.…”

Section: Optimized Ip Over Optical Solutionsmentioning

confidence: 99%

Realizing the optical transport networking vision in the 100 Gb/s era

Frigerio¹,

Lometti²,

Rahn³

et al. 2010

Bell Labs Tech. J.

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emerging ultra-high bit rate services (e.g., IEEE 100GBASE-R, 40GBASE-R).Leveraging optical control plane advances, dynamically configurable OTN and IP-over-OTN solutions deliver on the promise of rapid provisioning, increased automation, and richer sets of service functionality. The control plane enabled OTN opens the door to new services, similar to how signaling system 7 (SS7) opened up the possibilities for advanced intelligent networking (AIN) for the public switched telephony network (PSTN). IP-over-OTN solutions not only provide a dynamically configurable optical layer responsive to IP networking demands, but enable multi-layer optimization with superior service resiliency. This paper examines OTN standardization advances and how OTN-based networking helps service providers

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“…The TTO uses the multi-domain topology present in the root TED and demand statistics (inter-domain requests) from the root PCE to optimize inter-domain performance of the network. The TTO can configure routes to be used by the root PCE to balance inter-domain load between different domains and can also trigger capacity updates of transit tunnels in different domains using the principles of network engineering [8]. The TTO can send a trigger to the corresponding TTM to modify the tunnel capacity.…”

Section: Transit Tunnel Manager (Ttm)mentioning

confidence: 99%

“…Each policy is defined by the three operating parameters: (min_capacity, max_capacity, default_capacity), with Policy A as (2,8,5), Policy B as (5, 15, 10), Policy C as (9, 11, 10) and Policy D as (10, 20, 15) (in Gbps). The NSFNet topology is used to perform the event-driven simulations.…”

Section: Examplementioning

confidence: 99%

Adaptive advance reservation based inter-domain framework

Chamania

Chen

Jukan

et al. 2008

2008 2nd International Symposium on Advanced Networks and Telecommunication Systems

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There is a growing demand for end-to-end quality of service in present day multi-domain networks. IP/BGP is not equipped to support end-to-end QoS required by new upcoming services, and scalable QoS paradigms are required in lower layers to support future applications. Frequent fluctuations of available inter-domain resources inside a domain hinder the development of a scalable QoS routing paradigm. To address this, we propose a mechanism to create stable inter-domain topologies by employing adaptive advance reservation for inter-domain connections inside a domain. Advance reservation implies that capacity is pre-reserved for inter-domain traffic in the form of layer-2 tunnels, and simple policies are introduced to control the capacity of these tunnels. We study this proposal within the concept of the Path Computation Element (PCE) framework and evaluate the performance of dynamic and adaptively advancereserved inter-domain connections and topologies.

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Network engineering-Control of dynamic link topology in user networks

Cited by 15 publications

References 5 publications

Effective Usage of Dynamic Circuits for IP Routing

Effective Usage of Dynamic Circuits for IP Routing

Realizing the optical transport networking vision in the 100 Gb/s era

Adaptive advance reservation based inter-domain framework

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