Path Computation Element Communication Protocol (PCEP) Requirements and Protocol Extensions in Support of Global Concurrent Optimization

King, Daniel; Oki, Eiji; Roux, Jean-Louis Le; Lee, Young

doi:10.17487/rfc5557

Cited by 37 publications

(26 citation statements)

References 12 publications

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“…This bulk optimization on path computation is called global concurrent optimization (GCO). Reference [51] addressed application-specific requirements for PCEP and specified protocol extensions from [47] to support GCO. GCO simultaneously considers multiple path request and existing paths in the network and provides an optimal solution to satisfy the constraints for all the paths.…”

Section: Path Computation Elementmentioning

confidence: 99%

Optical Networking Paradigm: Past, Recent Trends and Future Directions

Oki

Wada

Okamoto

et al. 2017

IEICE Trans. Commun.

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SUMMARY This paper presents past and recent trends of optical networks and addresses the future directions. First, we describe path networks with the historical backgrounds and trends. path networks have advanced by using various multiplexing technologies. They include time-division multiplexing (TDM), asynchronous transfer mode (ATM), and wavelengthdivision multiplexing (WDM). ATM was later succeeded to multi-protocol label switching (MPLS). Second, we present generalized MPLS technologies (GMPLS). In GMPLS, the label concept of MPLS is extended to other labels used in TDM, WDM, and fiber networks. GMPLS enables network operators to serve networks deployed by different technologies with a common protocol suite of GMPLS. Third, we describe multi-layer traffic engineering and a path computation element (PCE). Multi-layer traffic engineering designs and controls networks considering resource usages of more than one layer. This leads to use network resources more efficiently than the single-layer traffic engineering adopted independently for each layer. PCE is defined as a network element that computes paths, which are used for traffic engineering. Then, we address software-defined networks, which put the designed network functions into the programmable data plane by way of the management plane. We describe the evaluation from GMPLS to software defined networking (SDN) and transport SDN. Fifth, we describe the advanced devices and switches for optical networks. Finally, we address advances in networking technologies and future directions on optical networking.

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Section: Path Computation Elementmentioning

confidence: 99%

Optical Networking Paradigm: Past, Recent Trends and Future Directions

Oki

Wada

Okamoto

et al. 2017

IEICE Trans. Commun.

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show abstract

“…A special case of LSP reoptimization is GCO [RFC5557]. Global control of the LSP operation sequence in [RFC5557] is predicated on the use of what is effectively a stateful (or semi-stateful) NMS.…”

Section: Lsp Reoptimizationmentioning

confidence: 99%

“…Global control of the LSP operation sequence in [RFC5557] is predicated on the use of what is effectively a stateful (or semi-stateful) NMS. The NMS can be either not local to the network nodes, in which case another northbound interface is required for LSP attribute changes, or local/collocated, in which case there are significant issues with efficiency in resource usage.…”

Section: Lsp Reoptimizationmentioning

confidence: 99%

Applicability of a Stateful Path Computation Element (PCE)

Zhang¹,

Minei²

2017

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“…The clarifications and use cases in this document are applicable to the Global Concurrent Optimization (GCO) path computation mechanism specified in [RFC5557]. The GCO application provides the capability to optimize a set of services within the network, in order to maximize efficient use of network resources.…”

Section: Application Of Svec Listsmentioning

confidence: 99%

“…GCO (Global Concurrent Optimization): A concurrent path computation application, defined in [RFC5557], where a set of traffic engineered (TE) paths is computed concurrently in order to efficiently utilize network resources.…”

Section: Terminologymentioning

confidence: 99%

Path Computation Element Communication Protocol (PCEP) Requirements and Protocol Extensions in Support of Global Concurrent Optimization

Abstract: The Path Computation Element Communication Protocol (PCEP)

Cited by 37 publications

References 12 publications

Optical Networking Paradigm: Past, Recent Trends and Future Directions

Optical Networking Paradigm: Past, Recent Trends and Future Directions

Applicability of a Stateful Path Computation Element (PCE)

Use of the Synchronization VECtor (SVEC) List for Synchronized Dependent Path Computations

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