OSPF-TE Extensions for General Network Element Constraints

Han, Jianrui; Xu, Yunbin; Lee, Young; Zhang, Fatai; Bernstein, Greg

doi:10.17487/rfc7580

Cited by 3 publications

(3 citation statements)

References 8 publications

(22 reference statements)

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“…Usually, these two kinds of information are disseminated using two top-level TLVs: Optical Node Property TLV and Link TLV. The information concerning the optical node can be separated into two categories [18]: node devices (e.g., optical regenerators) and switching capabilities of the node (i.e., connectivity matrix) [19]. Thus, depending on the used control plane implementation and on the switching capability of the ROADMs, the Connectivity Matrix information may be optional.…”

Section: A Ospf-tementioning

confidence: 99%

Optical Power Control in Translucent Flexible Optical Networks With GMPLS Control Plane

Kanj¹,

Rouzic

Meuric

et al. 2018

J. Opt. Commun. Netw.

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Abstract-The continuously increasing traffic of Internet services (cloud services, video streaming, social networks and recently Internet of things services) is leading to a huge traffic growth in the core optical networks. This traffic evolution is pushing network operators to exploit efficiently their infrastructures in order to postpone, as much as possible, the expensive deployment of new infrastructures. In this respect, the migration from fixed to flex-grid optical networks was triggered in order to efficiently use optical network capacity taking benefits from the improved spectral efficiency of flexible transponders. In our previous work [1], we demonstrated that migrating towards flexible networks while keeping in use existing optical amplifiers will cause power saturation problem over highly loaded links due to the increase in the number of optical channels. To overcome this problem, we proposed in [1] a power adaptation process that consists on converting transmission performance margins into optical power attenuation over optical links. However, the realized work considered only transparent optical network controlled by GMPLS protocol suite. In this paper, we consider the case of translucent optical network where optical regeneration is required and thus the power adaptation process is adapted to such kind of network. New routing algorithm and protocol extensions are proposed to take into account power and regeneration information in the GMPLS control plane of translucent networks.

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Section: A Ospf-tementioning

confidence: 99%

Optical Power Control in Translucent Flexible Optical Networks With GMPLS Control Plane

Kanj¹,

Rouzic

Meuric

et al. 2018

J. Opt. Commun. Netw.

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“…During the creation of the local databases, we separated the record for the static (P opt channel,l , P design,l , P margin,l , OSN R l .) and dynamic (P l (t), spectrum slot availability bit map) parameters [31]. The proposed static parameters are never changed during network operation except in the case where link design or equipment (amplifier or link) was changed (e.g., in the case of fiber repair).…”

Section: A Ospf-te Extensionsmentioning

confidence: 99%

Optical Power Control in GMPLS Control Plane

Kanj¹,

Rouzic²,

Meuric³

et al. 2016

J. Opt. Commun. Netw.

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International audienceThe exponential traffic growth in optical networks has triggered the evolution from Fixed-Grid to Flex-Grid technology. This evolution allows better spectral efficiency and spectrum usage over current optical networks in order to facilitate huge dynamic traffic demands. The promise of Flex-Grid technology in terms of increasing the number of optical channels established over optical links may however not be sustainable because of the associated increase in optical amplification power. In this work, we detail a power control process that takes advantage of link optical power and channel optical signal to noise ratio (OSNR) margins to allow network operators to support this optical power increase while maintaining the use of legacy optical amplifiers. New GMPLS protocol extensions are proposed to integrate the optical power control process in the control plane. The performance of the process is evaluated in terms of the blocking ratio and network throughput over Fixed-Grid and Flex-Grid networks. Results show that controlling optical power benefits from the Flex-Grid technology in terms of spectrum and capacity gain and reduces optical connection blocking

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“…Related to this document is [RFC7580], which provides GMPLS OSPF routing enhancements to support the generic routing and label assignment process that can be applicable to a wider range of technologies beyond WSON.…”

Section: Introductionmentioning

confidence: 99%

GMPLS OSPF Enhancement for Signal and Network Element Compatibility for Wavelength Switched Optical Networks

Lee¹,

Bernstein²

2015

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OSPF-TE Extensions for General Network Element Constraints

Cited by 3 publications

References 8 publications

Optical Power Control in Translucent Flexible Optical Networks With GMPLS Control Plane

Optical Power Control in Translucent Flexible Optical Networks With GMPLS Control Plane

Optical Power Control in GMPLS Control Plane

GMPLS OSPF Enhancement for Signal and Network Element Compatibility for Wavelength Switched Optical Networks

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