Abstract

Adaptive flexi-grid optical networks should be able to autonomously decide where and when to dynamically setup, reoptimize, and release elastic optical connections, in reaction to network state changes. A stateful path computation element (PCE) is a key element for the introduction of dynamics and adaptation in generalized multiprotocol label switching (GMPLS)-based distributed control plane for flexi-grid DWDM networks (e.g., global concurrent reoptimization, defragmentation, or elastic inverse-multiplexing), as well as for enabling the standardized deployment of the GMPLS control plane in the software defined network control architecture. First, this paper provides an overview of passive and active stateful PCE architectures for GMPLS-enabled flexi-grid DWDM networks. A passive stateful PCE allows for improved path computation considering not only the network state (TED) but also the global connection state label switched paths database (LSPDB), in comparison with a (stateless) PCE. However, it does not have direct control (modification, rerouting) of path reservations stored in the LSPDB. The lack of control of these label switched paths (LSPs) may result in the suboptimal performance. To this end, an active stateful PCE allows for optimal path computation considering the LSPDB for the control of the state (e.g., increase of LSP bandwidth, LSP rerouting) of the stored LSPs. More recently, an active stateful PCE architecture has also been proposed that exposes the capability of setting up and releasing new LSPs. It is known as active stateful PCE with instantiation capabilities. This paper presents the first prototype implementation and experimental evaluation of an active stateful PCE with instantiation capabilities for the GMPLS-controlled flexi-grid DWDM network of the ADRENALINE testbed.

© 2014 IEEE

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2014 (2)

O. G. d. Dios, R. Casellas, F. Zhang, X. Fu, D. Ceccarelli, and I. Hussain, “Framework and requirements for GMPLS based control of flexi-grid DWDM networks,” IETF draft-ietf-ccamp-flexi-grid-fwk (work in progress), 2014.

L. Gifre, F. Paolucci, A. Aguado, R. Casellas, A. Castro, F. Cugini, P. Castoldi, L. Velasco, and V. López, “Experimental assessment of in-operation spectrum defragmentation,” Photon. Netw. Commun., vol. 27, pp. 128–140, 2014.

2013 (4)

F. Cugini, F. Paolucci, G. Meloni, G. Berrettini, M. Secondini, F. Fresi, N. Sambo, L. Poti, and P. Castoldi, “Push-pull defragmentation without traffic disruption in flexible grid optical networks,” J. Lightw. Technol., vol. 31, no. 1, pp. 125–133, 2013.

E. Crabbe, I. Minei, S. Sivabalan, and R. Varga, “PCEP extensions for PCE-initiated LSP setup in a stateful PCE model,” IETF draft-ietf-pce-pce-initiated-lsp (work in progress), 2013.

R. Casellas, R. Muñoz, J. M. Fabrega, M. S. Moreolo, R. Martinez, L. Liu, T. Tsuritani, and I. Morita, “Design and experimental validation of a GMPLS/PCE control plane for elastic CO-OFDM optical networks,” IEEE Sel. Areas Commun., vol. 31, no. 1, pp. 49–61, 2013.

E. Crabbe, J. Medved, I. Minei, and R. Varga, “PCEP extensions for stateful PCE,” IETF draft-ietf-pce-stateful-pce (work in progress), 2013.

2012 (6)

O. Gerstel, M. Jinno, A. Lord, and S. B. Yoo, “Elastic optical networking: A new dawn for the optical layer?” IEEE Commun. Mag., vol. 50, no. 2, pp. s12–s20, 2012.

A. Castro, L. Velasco, M. Ruiz, M. Klinkowski, J. P. Fernández-Palacios, and D. Careglio, “Dynamic routing and spectrum (re) allocation in future flexgrid optical networks,” Comput. Netw., vol. 56, no. 12, pp. 2869–2883, 2012.

R. Casellas, R. Muñoz, J. M. Fàbrega, M. S. Moreolo, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “GMPLS/PCE control of flexi-grid DWDM optical networks using CO-OFDM transmission [invited],” J. Opt. Commun. Netw., vol. 4, no. 11, pp. B1–B10, 2012.

R. Muñoz, R. Casellas, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “Experimental evaluation of efficient routing and distributed spectrum allocation algorithms for GMPLS elastic networks,” Opt. Exp., vol. 20, no. 28, pp. 28 532–28 537, 2012.

M. Jinno, H. Takara, Y. Sone, K. Yonenaga, and A. Hirano, “Multiflow optical transponder for efficient multilayer optical networking,” IEEE Commun. Mag., vol. 50, no. 5, pp. 56–65, 2012.

R. Vilalta, R. Muñoz, R. Casellas, and R. Martínez, “Dynamic virtual GMPLS-controlled WSON using a resource broker with a VNT manager on the adrenaline testbed,” Opt. Exp., vol. 20, no. 28, pp. 29 149–29 154, 2012.

2011 (2)

R. Enns, M. Bjorklund, J. Schoenwaelder, and A. Bierman, “Network configuration protocol (NETCONF),” IETF RFC 6241, 2011.

G. Goth, “Software-defined networking could shake up more than packets,” IEEE Internet Comput., vol. 15, no. 4, pp. 6–9, 2011.

2010 (1)

M. Bjorklund, “YANG—A data modelling language for the network configuration protocol (NETCONF),” IETF RFC 6020, 2010.

2009 (2)

Y. Lee, J. L. Le Roux, D. King, and E. Oki, “Path computation element communication protocol (PCEP) requirements and protocol extensions in support of global concurrent optimization,” IETF RFC 5557, 2009.

J. P. Vasseur and J. L. Le Roux, (Eds.), “Path computation element (PCE) communication protocol (PCEP),” IETF RFC 5440, 2009.

2006 (1)

A. Farrel, J.-P. Vasseur, and J. Ash, “A path computation element (PCE)-based architecture,” IETF RFC4655, 2006.

Aguado, A.

L. Gifre, F. Paolucci, A. Aguado, R. Casellas, A. Castro, F. Cugini, P. Castoldi, L. Velasco, and V. López, “Experimental assessment of in-operation spectrum defragmentation,” Photon. Netw. Commun., vol. 27, pp. 128–140, 2014.

Amaya, N.

N. Amaya, G. Zervas, B. Rahimzadeh Rofoee, M. Irfan, Y. Qin, and D. Simeonidou, “Field trial of a 1.5 tb/s adaptive and gridless OXC supporting elastic 1000-fold bandwidth granularity,” in Proc. Eur. Conf. Exhib. Opt. Commun., 2011, pp. 1–3.

Ash, J.

A. Farrel, J.-P. Vasseur, and J. Ash, “A path computation element (PCE)-based architecture,” IETF RFC4655, 2006.

Berrettini, G.

F. Cugini, F. Paolucci, G. Meloni, G. Berrettini, M. Secondini, F. Fresi, N. Sambo, L. Poti, and P. Castoldi, “Push-pull defragmentation without traffic disruption in flexible grid optical networks,” J. Lightw. Technol., vol. 31, no. 1, pp. 125–133, 2013.

Bierman, A.

R. Enns, M. Bjorklund, J. Schoenwaelder, and A. Bierman, “Network configuration protocol (NETCONF),” IETF RFC 6241, 2011.

Bjorklund, M.

R. Enns, M. Bjorklund, J. Schoenwaelder, and A. Bierman, “Network configuration protocol (NETCONF),” IETF RFC 6241, 2011.

M. Bjorklund, “YANG—A data modelling language for the network configuration protocol (NETCONF),” IETF RFC 6020, 2010.

Careglio, D.

A. Castro, L. Velasco, M. Ruiz, M. Klinkowski, J. P. Fernández-Palacios, and D. Careglio, “Dynamic routing and spectrum (re) allocation in future flexgrid optical networks,” Comput. Netw., vol. 56, no. 12, pp. 2869–2883, 2012.

Casellas, R.

L. Gifre, F. Paolucci, A. Aguado, R. Casellas, A. Castro, F. Cugini, P. Castoldi, L. Velasco, and V. López, “Experimental assessment of in-operation spectrum defragmentation,” Photon. Netw. Commun., vol. 27, pp. 128–140, 2014.

O. G. d. Dios, R. Casellas, F. Zhang, X. Fu, D. Ceccarelli, and I. Hussain, “Framework and requirements for GMPLS based control of flexi-grid DWDM networks,” IETF draft-ietf-ccamp-flexi-grid-fwk (work in progress), 2014.

R. Casellas, R. Muñoz, J. M. Fabrega, M. S. Moreolo, R. Martinez, L. Liu, T. Tsuritani, and I. Morita, “Design and experimental validation of a GMPLS/PCE control plane for elastic CO-OFDM optical networks,” IEEE Sel. Areas Commun., vol. 31, no. 1, pp. 49–61, 2013.

R. Muñoz, R. Casellas, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “Experimental evaluation of efficient routing and distributed spectrum allocation algorithms for GMPLS elastic networks,” Opt. Exp., vol. 20, no. 28, pp. 28 532–28 537, 2012.

R. Casellas, R. Muñoz, J. M. Fàbrega, M. S. Moreolo, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “GMPLS/PCE control of flexi-grid DWDM optical networks using CO-OFDM transmission [invited],” J. Opt. Commun. Netw., vol. 4, no. 11, pp. B1–B10, 2012.

R. Vilalta, R. Muñoz, R. Casellas, and R. Martínez, “Dynamic virtual GMPLS-controlled WSON using a resource broker with a VNT manager on the adrenaline testbed,” Opt. Exp., vol. 20, no. 28, pp. 29 149–29 154, 2012.

R. Muñoz, R. Vilalta, M. S. Moreolo, J. Fàbrega, R. Casellas, F. Vílchez, R. Martínez, S. Frigerio, and A. Lometti, “Dynamic differential delay aware RMSA for elastic multi-path provisioning in GMPLS Flexi-grid DWDM networks,” presented at the Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf., Anaheim, CA, USA, Mar. 9–13, 2014.

R. Munoz, R. Casellas, and R. Martínez, “Dynamic distributed spectrum allocation in GMPLS-controlled elastic optical networks,” in Proc. Eur. Conf. Exhib. Opt. Commun., 2011, pp. 1–3.

R. Munoz, V. Lopez, R. Casellas, O. G. de Dios, F. Cugini, N. Sambo, A. D’Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez, and R. Morro, “IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks,” in Proc. Future Netw. Mobile Summit, 2013, pp. 1–10.

R. Muñoz, R. Casellas, and R. Martínez, “PCE: What is it, how does it work and what are its limitations? (Tutorial),” presented at the Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf., Anaheim, CA, USA, Mar. 17–21, 2013.

R. Casellas, R. Martínez, R. Muñoz, L. Liu, T. Tsuritani, and I. Morita, “Dynamic provisioning via a stateful PCE with instantiation capabilities in GMPLS-controlled flexi-grid DWDM networks,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 2013, pp. 1–3.

R. Muñoz, R. Vilalta, R. Casellas, R. Martínez, S. Frigerio, and A. Lometti, “Design and experimental evaluation of dynamic inverse-multiplexing provisioning in GMPLS-controlled flexi-grid DWDM networks with sliceable OTN BVTs,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 22–26, 2013, pp. 1–3.

Castoldi, P.

L. Gifre, F. Paolucci, A. Aguado, R. Casellas, A. Castro, F. Cugini, P. Castoldi, L. Velasco, and V. López, “Experimental assessment of in-operation spectrum defragmentation,” Photon. Netw. Commun., vol. 27, pp. 128–140, 2014.

F. Cugini, F. Paolucci, G. Meloni, G. Berrettini, M. Secondini, F. Fresi, N. Sambo, L. Poti, and P. Castoldi, “Push-pull defragmentation without traffic disruption in flexible grid optical networks,” J. Lightw. Technol., vol. 31, no. 1, pp. 125–133, 2013.

Castro, A.

L. Gifre, F. Paolucci, A. Aguado, R. Casellas, A. Castro, F. Cugini, P. Castoldi, L. Velasco, and V. López, “Experimental assessment of in-operation spectrum defragmentation,” Photon. Netw. Commun., vol. 27, pp. 128–140, 2014.

A. Castro, L. Velasco, M. Ruiz, M. Klinkowski, J. P. Fernández-Palacios, and D. Careglio, “Dynamic routing and spectrum (re) allocation in future flexgrid optical networks,” Comput. Netw., vol. 56, no. 12, pp. 2869–2883, 2012.

Ceccarelli, D.

O. G. d. Dios, R. Casellas, F. Zhang, X. Fu, D. Ceccarelli, and I. Hussain, “Framework and requirements for GMPLS based control of flexi-grid DWDM networks,” IETF draft-ietf-ccamp-flexi-grid-fwk (work in progress), 2014.

Cimmino, A.

R. Munoz, V. Lopez, R. Casellas, O. G. de Dios, F. Cugini, N. Sambo, A. D’Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez, and R. Morro, “IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks,” in Proc. Future Netw. Mobile Summit, 2013, pp. 1–10.

Crabbe, E.

E. Crabbe, I. Minei, S. Sivabalan, and R. Varga, “PCEP extensions for PCE-initiated LSP setup in a stateful PCE model,” IETF draft-ietf-pce-pce-initiated-lsp (work in progress), 2013.

E. Crabbe, J. Medved, I. Minei, and R. Varga, “PCEP extensions for stateful PCE,” IETF draft-ietf-pce-stateful-pce (work in progress), 2013.

Cugini, F.

L. Gifre, F. Paolucci, A. Aguado, R. Casellas, A. Castro, F. Cugini, P. Castoldi, L. Velasco, and V. López, “Experimental assessment of in-operation spectrum defragmentation,” Photon. Netw. Commun., vol. 27, pp. 128–140, 2014.

F. Cugini, F. Paolucci, G. Meloni, G. Berrettini, M. Secondini, F. Fresi, N. Sambo, L. Poti, and P. Castoldi, “Push-pull defragmentation without traffic disruption in flexible grid optical networks,” J. Lightw. Technol., vol. 31, no. 1, pp. 125–133, 2013.

R. Munoz, V. Lopez, R. Casellas, O. G. de Dios, F. Cugini, N. Sambo, A. D’Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez, and R. Morro, “IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks,” in Proc. Future Netw. Mobile Summit, 2013, pp. 1–10.

D’Errico, A.

R. Munoz, V. Lopez, R. Casellas, O. G. de Dios, F. Cugini, N. Sambo, A. D’Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez, and R. Morro, “IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks,” in Proc. Future Netw. Mobile Summit, 2013, pp. 1–10.

Dios, O. G. d.

O. G. d. Dios, R. Casellas, F. Zhang, X. Fu, D. Ceccarelli, and I. Hussain, “Framework and requirements for GMPLS based control of flexi-grid DWDM networks,” IETF draft-ietf-ccamp-flexi-grid-fwk (work in progress), 2014.

Dios, O. G. de

R. Munoz, V. Lopez, R. Casellas, O. G. de Dios, F. Cugini, N. Sambo, A. D’Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez, and R. Morro, “IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks,” in Proc. Future Netw. Mobile Summit, 2013, pp. 1–10.

Enns, R.

R. Enns, M. Bjorklund, J. Schoenwaelder, and A. Bierman, “Network configuration protocol (NETCONF),” IETF RFC 6241, 2011.

Fabrega, J. M.

R. Casellas, R. Muñoz, J. M. Fabrega, M. S. Moreolo, R. Martinez, L. Liu, T. Tsuritani, and I. Morita, “Design and experimental validation of a GMPLS/PCE control plane for elastic CO-OFDM optical networks,” IEEE Sel. Areas Commun., vol. 31, no. 1, pp. 49–61, 2013.

Fàbrega, J.

R. Muñoz, R. Vilalta, M. S. Moreolo, J. Fàbrega, R. Casellas, F. Vílchez, R. Martínez, S. Frigerio, and A. Lometti, “Dynamic differential delay aware RMSA for elastic multi-path provisioning in GMPLS Flexi-grid DWDM networks,” presented at the Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf., Anaheim, CA, USA, Mar. 9–13, 2014.

M. S. Moreolo, J. Fàbrega, F. Vílchez, L. Nadal, V. López, and G. Junyent, “Experimental validation of an elastic low-complex OFDM-based BVT for flexi-grid metro networks,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 2013, pp. 1–3.

Fàbrega, J. M.

Farrel, A.

A. Farrel, J.-P. Vasseur, and J. Ash, “A path computation element (PCE)-based architecture,” IETF RFC4655, 2006.

Fernández-Palacios, J. P.

A. Castro, L. Velasco, M. Ruiz, M. Klinkowski, J. P. Fernández-Palacios, and D. Careglio, “Dynamic routing and spectrum (re) allocation in future flexgrid optical networks,” Comput. Netw., vol. 56, no. 12, pp. 2869–2883, 2012.

Foundation, O. N.

O. N. Foundation, “Onf white paper, software-defined networking: The new norm for networks,” Tech. Rep., Open Networking Foundation(ONF) White Paper, 2012.

Fresi, F.

F. Cugini, F. Paolucci, G. Meloni, G. Berrettini, M. Secondini, F. Fresi, N. Sambo, L. Poti, and P. Castoldi, “Push-pull defragmentation without traffic disruption in flexible grid optical networks,” J. Lightw. Technol., vol. 31, no. 1, pp. 125–133, 2013.

Frigerio, S.

R. Muñoz, R. Vilalta, R. Casellas, R. Martínez, S. Frigerio, and A. Lometti, “Design and experimental evaluation of dynamic inverse-multiplexing provisioning in GMPLS-controlled flexi-grid DWDM networks with sliceable OTN BVTs,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 22–26, 2013, pp. 1–3.

R. Muñoz, R. Vilalta, M. S. Moreolo, J. Fàbrega, R. Casellas, F. Vílchez, R. Martínez, S. Frigerio, and A. Lometti, “Dynamic differential delay aware RMSA for elastic multi-path provisioning in GMPLS Flexi-grid DWDM networks,” presented at the Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf., Anaheim, CA, USA, Mar. 9–13, 2014.

Fu, X.

O. G. d. Dios, R. Casellas, F. Zhang, X. Fu, D. Ceccarelli, and I. Hussain, “Framework and requirements for GMPLS based control of flexi-grid DWDM networks,” IETF draft-ietf-ccamp-flexi-grid-fwk (work in progress), 2014.

Gerstel, O.

O. Gerstel, M. Jinno, A. Lord, and S. B. Yoo, “Elastic optical networking: A new dawn for the optical layer?” IEEE Commun. Mag., vol. 50, no. 2, pp. s12–s20, 2012.

R. Munoz, V. Lopez, R. Casellas, O. G. de Dios, F. Cugini, N. Sambo, A. D’Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez, and R. Morro, “IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks,” in Proc. Future Netw. Mobile Summit, 2013, pp. 1–10.

Gifre, L.

L. Gifre, F. Paolucci, A. Aguado, R. Casellas, A. Castro, F. Cugini, P. Castoldi, L. Velasco, and V. López, “Experimental assessment of in-operation spectrum defragmentation,” Photon. Netw. Commun., vol. 27, pp. 128–140, 2014.

Goth, G.

G. Goth, “Software-defined networking could shake up more than packets,” IEEE Internet Comput., vol. 15, no. 4, pp. 6–9, 2011.

Hirano, A.

M. Jinno, H. Takara, Y. Sone, K. Yonenaga, and A. Hirano, “Multiflow optical transponder for efficient multilayer optical networking,” IEEE Commun. Mag., vol. 50, no. 5, pp. 56–65, 2012.

Hussain, I.

O. G. d. Dios, R. Casellas, F. Zhang, X. Fu, D. Ceccarelli, and I. Hussain, “Framework and requirements for GMPLS based control of flexi-grid DWDM networks,” IETF draft-ietf-ccamp-flexi-grid-fwk (work in progress), 2014.

Irfan, M.

N. Amaya, G. Zervas, B. Rahimzadeh Rofoee, M. Irfan, Y. Qin, and D. Simeonidou, “Field trial of a 1.5 tb/s adaptive and gridless OXC supporting elastic 1000-fold bandwidth granularity,” in Proc. Eur. Conf. Exhib. Opt. Commun., 2011, pp. 1–3.

Jinno, M.

O. Gerstel, M. Jinno, A. Lord, and S. B. Yoo, “Elastic optical networking: A new dawn for the optical layer?” IEEE Commun. Mag., vol. 50, no. 2, pp. s12–s20, 2012.

M. Jinno, H. Takara, Y. Sone, K. Yonenaga, and A. Hirano, “Multiflow optical transponder for efficient multilayer optical networking,” IEEE Commun. Mag., vol. 50, no. 5, pp. 56–65, 2012.

Junyent, G.

M. S. Moreolo, J. Fàbrega, F. Vílchez, L. Nadal, V. López, and G. Junyent, “Experimental validation of an elastic low-complex OFDM-based BVT for flexi-grid metro networks,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 2013, pp. 1–3.

King, D.

R. Munoz, V. Lopez, R. Casellas, O. G. de Dios, F. Cugini, N. Sambo, A. D’Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez, and R. Morro, “IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks,” in Proc. Future Netw. Mobile Summit, 2013, pp. 1–10.

Klinkowski, M.

A. Castro, L. Velasco, M. Ruiz, M. Klinkowski, J. P. Fernández-Palacios, and D. Careglio, “Dynamic routing and spectrum (re) allocation in future flexgrid optical networks,” Comput. Netw., vol. 56, no. 12, pp. 2869–2883, 2012.

Layec, P.

R. Munoz, V. Lopez, R. Casellas, O. G. de Dios, F. Cugini, N. Sambo, A. D’Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez, and R. Morro, “IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks,” in Proc. Future Netw. Mobile Summit, 2013, pp. 1–10.

Lee, J. L. Le Roux, D. King, and E. Oki, Y.

Y. Lee, J. L. Le Roux, D. King, and E. Oki, “Path computation element communication protocol (PCEP) requirements and protocol extensions in support of global concurrent optimization,” IETF RFC 5557, 2009.

Liu, L.

R. Casellas, R. Muñoz, J. M. Fabrega, M. S. Moreolo, R. Martinez, L. Liu, T. Tsuritani, and I. Morita, “Design and experimental validation of a GMPLS/PCE control plane for elastic CO-OFDM optical networks,” IEEE Sel. Areas Commun., vol. 31, no. 1, pp. 49–61, 2013.

R. Muñoz, R. Casellas, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “Experimental evaluation of efficient routing and distributed spectrum allocation algorithms for GMPLS elastic networks,” Opt. Exp., vol. 20, no. 28, pp. 28 532–28 537, 2012.

R. Casellas, R. Muñoz, J. M. Fàbrega, M. S. Moreolo, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “GMPLS/PCE control of flexi-grid DWDM optical networks using CO-OFDM transmission [invited],” J. Opt. Commun. Netw., vol. 4, no. 11, pp. B1–B10, 2012.

R. Casellas, R. Martínez, R. Muñoz, L. Liu, T. Tsuritani, and I. Morita, “Dynamic provisioning via a stateful PCE with instantiation capabilities in GMPLS-controlled flexi-grid DWDM networks,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 2013, pp. 1–3.

Lometti, A.

R. Muñoz, R. Vilalta, R. Casellas, R. Martínez, S. Frigerio, and A. Lometti, “Design and experimental evaluation of dynamic inverse-multiplexing provisioning in GMPLS-controlled flexi-grid DWDM networks with sliceable OTN BVTs,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 22–26, 2013, pp. 1–3.

R. Muñoz, R. Vilalta, M. S. Moreolo, J. Fàbrega, R. Casellas, F. Vílchez, R. Martínez, S. Frigerio, and A. Lometti, “Dynamic differential delay aware RMSA for elastic multi-path provisioning in GMPLS Flexi-grid DWDM networks,” presented at the Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf., Anaheim, CA, USA, Mar. 9–13, 2014.

Lopez, V.

R. Munoz, V. Lopez, R. Casellas, O. G. de Dios, F. Cugini, N. Sambo, A. D’Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez, and R. Morro, “IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks,” in Proc. Future Netw. Mobile Summit, 2013, pp. 1–10.

López, V.

L. Gifre, F. Paolucci, A. Aguado, R. Casellas, A. Castro, F. Cugini, P. Castoldi, L. Velasco, and V. López, “Experimental assessment of in-operation spectrum defragmentation,” Photon. Netw. Commun., vol. 27, pp. 128–140, 2014.

M. S. Moreolo, J. Fàbrega, F. Vílchez, L. Nadal, V. López, and G. Junyent, “Experimental validation of an elastic low-complex OFDM-based BVT for flexi-grid metro networks,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 2013, pp. 1–3.

Lopez-Buedo, S.

R. Munoz, V. Lopez, R. Casellas, O. G. de Dios, F. Cugini, N. Sambo, A. D’Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez, and R. Morro, “IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks,” in Proc. Future Netw. Mobile Summit, 2013, pp. 1–10.

Lord, A.

O. Gerstel, M. Jinno, A. Lord, and S. B. Yoo, “Elastic optical networking: A new dawn for the optical layer?” IEEE Commun. Mag., vol. 50, no. 2, pp. s12–s20, 2012.

Martinez, R.

R. Casellas, R. Muñoz, J. M. Fabrega, M. S. Moreolo, R. Martinez, L. Liu, T. Tsuritani, and I. Morita, “Design and experimental validation of a GMPLS/PCE control plane for elastic CO-OFDM optical networks,” IEEE Sel. Areas Commun., vol. 31, no. 1, pp. 49–61, 2013.

R. Munoz, V. Lopez, R. Casellas, O. G. de Dios, F. Cugini, N. Sambo, A. D’Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez, and R. Morro, “IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks,” in Proc. Future Netw. Mobile Summit, 2013, pp. 1–10.

Martínez, R.

R. Vilalta, R. Muñoz, R. Casellas, and R. Martínez, “Dynamic virtual GMPLS-controlled WSON using a resource broker with a VNT manager on the adrenaline testbed,” Opt. Exp., vol. 20, no. 28, pp. 29 149–29 154, 2012.

R. Muñoz, R. Casellas, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “Experimental evaluation of efficient routing and distributed spectrum allocation algorithms for GMPLS elastic networks,” Opt. Exp., vol. 20, no. 28, pp. 28 532–28 537, 2012.

R. Casellas, R. Muñoz, J. M. Fàbrega, M. S. Moreolo, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “GMPLS/PCE control of flexi-grid DWDM optical networks using CO-OFDM transmission [invited],” J. Opt. Commun. Netw., vol. 4, no. 11, pp. B1–B10, 2012.

R. Muñoz, R. Casellas, and R. Martínez, “PCE: What is it, how does it work and what are its limitations? (Tutorial),” presented at the Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf., Anaheim, CA, USA, Mar. 17–21, 2013.

R. Casellas, R. Martínez, R. Muñoz, L. Liu, T. Tsuritani, and I. Morita, “Dynamic provisioning via a stateful PCE with instantiation capabilities in GMPLS-controlled flexi-grid DWDM networks,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 2013, pp. 1–3.

R. Muñoz, R. Vilalta, R. Casellas, R. Martínez, S. Frigerio, and A. Lometti, “Design and experimental evaluation of dynamic inverse-multiplexing provisioning in GMPLS-controlled flexi-grid DWDM networks with sliceable OTN BVTs,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 22–26, 2013, pp. 1–3.

R. Muñoz, R. Vilalta, M. S. Moreolo, J. Fàbrega, R. Casellas, F. Vílchez, R. Martínez, S. Frigerio, and A. Lometti, “Dynamic differential delay aware RMSA for elastic multi-path provisioning in GMPLS Flexi-grid DWDM networks,” presented at the Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf., Anaheim, CA, USA, Mar. 9–13, 2014.

Martínez, R.

R. Munoz, R. Casellas, and R. Martínez, “Dynamic distributed spectrum allocation in GMPLS-controlled elastic optical networks,” in Proc. Eur. Conf. Exhib. Opt. Commun., 2011, pp. 1–3.

Medved, J.

E. Crabbe, J. Medved, I. Minei, and R. Varga, “PCEP extensions for stateful PCE,” IETF draft-ietf-pce-stateful-pce (work in progress), 2013.

Meloni, G.

F. Cugini, F. Paolucci, G. Meloni, G. Berrettini, M. Secondini, F. Fresi, N. Sambo, L. Poti, and P. Castoldi, “Push-pull defragmentation without traffic disruption in flexible grid optical networks,” J. Lightw. Technol., vol. 31, no. 1, pp. 125–133, 2013.

Minei, I.

E. Crabbe, J. Medved, I. Minei, and R. Varga, “PCEP extensions for stateful PCE,” IETF draft-ietf-pce-stateful-pce (work in progress), 2013.

E. Crabbe, I. Minei, S. Sivabalan, and R. Varga, “PCEP extensions for PCE-initiated LSP setup in a stateful PCE model,” IETF draft-ietf-pce-pce-initiated-lsp (work in progress), 2013.

Moreolo, M. S.

R. Casellas, R. Muñoz, J. M. Fabrega, M. S. Moreolo, R. Martinez, L. Liu, T. Tsuritani, and I. Morita, “Design and experimental validation of a GMPLS/PCE control plane for elastic CO-OFDM optical networks,” IEEE Sel. Areas Commun., vol. 31, no. 1, pp. 49–61, 2013.

R. Casellas, R. Muñoz, J. M. Fàbrega, M. S. Moreolo, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “GMPLS/PCE control of flexi-grid DWDM optical networks using CO-OFDM transmission [invited],” J. Opt. Commun. Netw., vol. 4, no. 11, pp. B1–B10, 2012.

R. Muñoz, R. Vilalta, M. S. Moreolo, J. Fàbrega, R. Casellas, F. Vílchez, R. Martínez, S. Frigerio, and A. Lometti, “Dynamic differential delay aware RMSA for elastic multi-path provisioning in GMPLS Flexi-grid DWDM networks,” presented at the Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf., Anaheim, CA, USA, Mar. 9–13, 2014.

M. S. Moreolo, J. Fàbrega, F. Vílchez, L. Nadal, V. López, and G. Junyent, “Experimental validation of an elastic low-complex OFDM-based BVT for flexi-grid metro networks,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 2013, pp. 1–3.

Morita, I.

R. Casellas, R. Muñoz, J. M. Fabrega, M. S. Moreolo, R. Martinez, L. Liu, T. Tsuritani, and I. Morita, “Design and experimental validation of a GMPLS/PCE control plane for elastic CO-OFDM optical networks,” IEEE Sel. Areas Commun., vol. 31, no. 1, pp. 49–61, 2013.

R. Muñoz, R. Casellas, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “Experimental evaluation of efficient routing and distributed spectrum allocation algorithms for GMPLS elastic networks,” Opt. Exp., vol. 20, no. 28, pp. 28 532–28 537, 2012.

R. Casellas, R. Muñoz, J. M. Fàbrega, M. S. Moreolo, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “GMPLS/PCE control of flexi-grid DWDM optical networks using CO-OFDM transmission [invited],” J. Opt. Commun. Netw., vol. 4, no. 11, pp. B1–B10, 2012.

R. Casellas, R. Martínez, R. Muñoz, L. Liu, T. Tsuritani, and I. Morita, “Dynamic provisioning via a stateful PCE with instantiation capabilities in GMPLS-controlled flexi-grid DWDM networks,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 2013, pp. 1–3.

Morro, R.

R. Munoz, V. Lopez, R. Casellas, O. G. de Dios, F. Cugini, N. Sambo, A. D’Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez, and R. Morro, “IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks,” in Proc. Future Netw. Mobile Summit, 2013, pp. 1–10.

Munoz, R.

R. Munoz, V. Lopez, R. Casellas, O. G. de Dios, F. Cugini, N. Sambo, A. D’Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez, and R. Morro, “IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks,” in Proc. Future Netw. Mobile Summit, 2013, pp. 1–10.

R. Munoz, R. Casellas, and R. Martínez, “Dynamic distributed spectrum allocation in GMPLS-controlled elastic optical networks,” in Proc. Eur. Conf. Exhib. Opt. Commun., 2011, pp. 1–3.

Muñoz, R.

R. Casellas, R. Muñoz, J. M. Fabrega, M. S. Moreolo, R. Martinez, L. Liu, T. Tsuritani, and I. Morita, “Design and experimental validation of a GMPLS/PCE control plane for elastic CO-OFDM optical networks,” IEEE Sel. Areas Commun., vol. 31, no. 1, pp. 49–61, 2013.

R. Muñoz, R. Casellas, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “Experimental evaluation of efficient routing and distributed spectrum allocation algorithms for GMPLS elastic networks,” Opt. Exp., vol. 20, no. 28, pp. 28 532–28 537, 2012.

R. Casellas, R. Muñoz, J. M. Fàbrega, M. S. Moreolo, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “GMPLS/PCE control of flexi-grid DWDM optical networks using CO-OFDM transmission [invited],” J. Opt. Commun. Netw., vol. 4, no. 11, pp. B1–B10, 2012.

R. Vilalta, R. Muñoz, R. Casellas, and R. Martínez, “Dynamic virtual GMPLS-controlled WSON using a resource broker with a VNT manager on the adrenaline testbed,” Opt. Exp., vol. 20, no. 28, pp. 29 149–29 154, 2012.

R. Muñoz, R. Vilalta, M. S. Moreolo, J. Fàbrega, R. Casellas, F. Vílchez, R. Martínez, S. Frigerio, and A. Lometti, “Dynamic differential delay aware RMSA for elastic multi-path provisioning in GMPLS Flexi-grid DWDM networks,” presented at the Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf., Anaheim, CA, USA, Mar. 9–13, 2014.

R. Muñoz, R. Casellas, and R. Martínez, “PCE: What is it, how does it work and what are its limitations? (Tutorial),” presented at the Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf., Anaheim, CA, USA, Mar. 17–21, 2013.

R. Casellas, R. Martínez, R. Muñoz, L. Liu, T. Tsuritani, and I. Morita, “Dynamic provisioning via a stateful PCE with instantiation capabilities in GMPLS-controlled flexi-grid DWDM networks,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 2013, pp. 1–3.

R. Muñoz, R. Vilalta, R. Casellas, R. Martínez, S. Frigerio, and A. Lometti, “Design and experimental evaluation of dynamic inverse-multiplexing provisioning in GMPLS-controlled flexi-grid DWDM networks with sliceable OTN BVTs,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 22–26, 2013, pp. 1–3.

Nadal, L.

M. S. Moreolo, J. Fàbrega, F. Vílchez, L. Nadal, V. López, and G. Junyent, “Experimental validation of an elastic low-complex OFDM-based BVT for flexi-grid metro networks,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 2013, pp. 1–3.

Paolucci, F.

L. Gifre, F. Paolucci, A. Aguado, R. Casellas, A. Castro, F. Cugini, P. Castoldi, L. Velasco, and V. López, “Experimental assessment of in-operation spectrum defragmentation,” Photon. Netw. Commun., vol. 27, pp. 128–140, 2014.

F. Cugini, F. Paolucci, G. Meloni, G. Berrettini, M. Secondini, F. Fresi, N. Sambo, L. Poti, and P. Castoldi, “Push-pull defragmentation without traffic disruption in flexible grid optical networks,” J. Lightw. Technol., vol. 31, no. 1, pp. 125–133, 2013.

Poti, L.

F. Cugini, F. Paolucci, G. Meloni, G. Berrettini, M. Secondini, F. Fresi, N. Sambo, L. Poti, and P. Castoldi, “Push-pull defragmentation without traffic disruption in flexible grid optical networks,” J. Lightw. Technol., vol. 31, no. 1, pp. 125–133, 2013.

Qin, Y.

N. Amaya, G. Zervas, B. Rahimzadeh Rofoee, M. Irfan, Y. Qin, and D. Simeonidou, “Field trial of a 1.5 tb/s adaptive and gridless OXC supporting elastic 1000-fold bandwidth granularity,” in Proc. Eur. Conf. Exhib. Opt. Commun., 2011, pp. 1–3.

Rofoee, B. Rahimzadeh

N. Amaya, G. Zervas, B. Rahimzadeh Rofoee, M. Irfan, Y. Qin, and D. Simeonidou, “Field trial of a 1.5 tb/s adaptive and gridless OXC supporting elastic 1000-fold bandwidth granularity,” in Proc. Eur. Conf. Exhib. Opt. Commun., 2011, pp. 1–3.

Roux, J. L. Le

J. P. Vasseur and J. L. Le Roux, (Eds.), “Path computation element (PCE) communication protocol (PCEP),” IETF RFC 5440, 2009.

Ruiz, M.

A. Castro, L. Velasco, M. Ruiz, M. Klinkowski, J. P. Fernández-Palacios, and D. Careglio, “Dynamic routing and spectrum (re) allocation in future flexgrid optical networks,” Comput. Netw., vol. 56, no. 12, pp. 2869–2883, 2012.

Sambo, N.

F. Cugini, F. Paolucci, G. Meloni, G. Berrettini, M. Secondini, F. Fresi, N. Sambo, L. Poti, and P. Castoldi, “Push-pull defragmentation without traffic disruption in flexible grid optical networks,” J. Lightw. Technol., vol. 31, no. 1, pp. 125–133, 2013.

R. Munoz, V. Lopez, R. Casellas, O. G. de Dios, F. Cugini, N. Sambo, A. D’Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez, and R. Morro, “IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks,” in Proc. Future Netw. Mobile Summit, 2013, pp. 1–10.

Schoenwaelder, J.

R. Enns, M. Bjorklund, J. Schoenwaelder, and A. Bierman, “Network configuration protocol (NETCONF),” IETF RFC 6241, 2011.

Secondini, M.

F. Cugini, F. Paolucci, G. Meloni, G. Berrettini, M. Secondini, F. Fresi, N. Sambo, L. Poti, and P. Castoldi, “Push-pull defragmentation without traffic disruption in flexible grid optical networks,” J. Lightw. Technol., vol. 31, no. 1, pp. 125–133, 2013.

Seetharaman, S.

S. Seetharaman, “OpenFlow/SDN tutorial OFC/NFOEC,” in Proc. Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf, 2012, pp. 1–52.

Simeonidou, D.

N. Amaya, G. Zervas, B. Rahimzadeh Rofoee, M. Irfan, Y. Qin, and D. Simeonidou, “Field trial of a 1.5 tb/s adaptive and gridless OXC supporting elastic 1000-fold bandwidth granularity,” in Proc. Eur. Conf. Exhib. Opt. Commun., 2011, pp. 1–3.

Sivabalan, S.

E. Crabbe, I. Minei, S. Sivabalan, and R. Varga, “PCEP extensions for PCE-initiated LSP setup in a stateful PCE model,” IETF draft-ietf-pce-pce-initiated-lsp (work in progress), 2013.

Sone, Y.

M. Jinno, H. Takara, Y. Sone, K. Yonenaga, and A. Hirano, “Multiflow optical transponder for efficient multilayer optical networking,” IEEE Commun. Mag., vol. 50, no. 5, pp. 56–65, 2012.

Takara, H.

M. Jinno, H. Takara, Y. Sone, K. Yonenaga, and A. Hirano, “Multiflow optical transponder for efficient multilayer optical networking,” IEEE Commun. Mag., vol. 50, no. 5, pp. 56–65, 2012.

Tsuritani, T.

R. Casellas, R. Muñoz, J. M. Fabrega, M. S. Moreolo, R. Martinez, L. Liu, T. Tsuritani, and I. Morita, “Design and experimental validation of a GMPLS/PCE control plane for elastic CO-OFDM optical networks,” IEEE Sel. Areas Commun., vol. 31, no. 1, pp. 49–61, 2013.

R. Muñoz, R. Casellas, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “Experimental evaluation of efficient routing and distributed spectrum allocation algorithms for GMPLS elastic networks,” Opt. Exp., vol. 20, no. 28, pp. 28 532–28 537, 2012.

R. Casellas, R. Muñoz, J. M. Fàbrega, M. S. Moreolo, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “GMPLS/PCE control of flexi-grid DWDM optical networks using CO-OFDM transmission [invited],” J. Opt. Commun. Netw., vol. 4, no. 11, pp. B1–B10, 2012.

R. Casellas, R. Martínez, R. Muñoz, L. Liu, T. Tsuritani, and I. Morita, “Dynamic provisioning via a stateful PCE with instantiation capabilities in GMPLS-controlled flexi-grid DWDM networks,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 2013, pp. 1–3.

Varga, R.

E. Crabbe, I. Minei, S. Sivabalan, and R. Varga, “PCEP extensions for PCE-initiated LSP setup in a stateful PCE model,” IETF draft-ietf-pce-pce-initiated-lsp (work in progress), 2013.

E. Crabbe, J. Medved, I. Minei, and R. Varga, “PCEP extensions for stateful PCE,” IETF draft-ietf-pce-stateful-pce (work in progress), 2013.

Vasseur, J. P.

J. P. Vasseur and J. L. Le Roux, (Eds.), “Path computation element (PCE) communication protocol (PCEP),” IETF RFC 5440, 2009.

Vasseur, J.-P.

A. Farrel, J.-P. Vasseur, and J. Ash, “A path computation element (PCE)-based architecture,” IETF RFC4655, 2006.

Velasco, L.

L. Gifre, F. Paolucci, A. Aguado, R. Casellas, A. Castro, F. Cugini, P. Castoldi, L. Velasco, and V. López, “Experimental assessment of in-operation spectrum defragmentation,” Photon. Netw. Commun., vol. 27, pp. 128–140, 2014.

A. Castro, L. Velasco, M. Ruiz, M. Klinkowski, J. P. Fernández-Palacios, and D. Careglio, “Dynamic routing and spectrum (re) allocation in future flexgrid optical networks,” Comput. Netw., vol. 56, no. 12, pp. 2869–2883, 2012.

Vilalta, R.

R. Vilalta, R. Muñoz, R. Casellas, and R. Martínez, “Dynamic virtual GMPLS-controlled WSON using a resource broker with a VNT manager on the adrenaline testbed,” Opt. Exp., vol. 20, no. 28, pp. 29 149–29 154, 2012.

R. Muñoz, R. Vilalta, M. S. Moreolo, J. Fàbrega, R. Casellas, F. Vílchez, R. Martínez, S. Frigerio, and A. Lometti, “Dynamic differential delay aware RMSA for elastic multi-path provisioning in GMPLS Flexi-grid DWDM networks,” presented at the Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf., Anaheim, CA, USA, Mar. 9–13, 2014.

R. Muñoz, R. Vilalta, R. Casellas, R. Martínez, S. Frigerio, and A. Lometti, “Design and experimental evaluation of dynamic inverse-multiplexing provisioning in GMPLS-controlled flexi-grid DWDM networks with sliceable OTN BVTs,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 22–26, 2013, pp. 1–3.

Vílchez, F.

R. Muñoz, R. Vilalta, M. S. Moreolo, J. Fàbrega, R. Casellas, F. Vílchez, R. Martínez, S. Frigerio, and A. Lometti, “Dynamic differential delay aware RMSA for elastic multi-path provisioning in GMPLS Flexi-grid DWDM networks,” presented at the Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf., Anaheim, CA, USA, Mar. 9–13, 2014.

M. S. Moreolo, J. Fàbrega, F. Vílchez, L. Nadal, V. López, and G. Junyent, “Experimental validation of an elastic low-complex OFDM-based BVT for flexi-grid metro networks,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 2013, pp. 1–3.

Yonenaga, K.

M. Jinno, H. Takara, Y. Sone, K. Yonenaga, and A. Hirano, “Multiflow optical transponder for efficient multilayer optical networking,” IEEE Commun. Mag., vol. 50, no. 5, pp. 56–65, 2012.

Yoo, S. B.

O. Gerstel, M. Jinno, A. Lord, and S. B. Yoo, “Elastic optical networking: A new dawn for the optical layer?” IEEE Commun. Mag., vol. 50, no. 2, pp. s12–s20, 2012.

Zervas, G.

N. Amaya, G. Zervas, B. Rahimzadeh Rofoee, M. Irfan, Y. Qin, and D. Simeonidou, “Field trial of a 1.5 tb/s adaptive and gridless OXC supporting elastic 1000-fold bandwidth granularity,” in Proc. Eur. Conf. Exhib. Opt. Commun., 2011, pp. 1–3.

Zhang, F.

O. G. d. Dios, R. Casellas, F. Zhang, X. Fu, D. Ceccarelli, and I. Hussain, “Framework and requirements for GMPLS based control of flexi-grid DWDM networks,” IETF draft-ietf-ccamp-flexi-grid-fwk (work in progress), 2014.

Comput. Netw. (1)

A. Castro, L. Velasco, M. Ruiz, M. Klinkowski, J. P. Fernández-Palacios, and D. Careglio, “Dynamic routing and spectrum (re) allocation in future flexgrid optical networks,” Comput. Netw., vol. 56, no. 12, pp. 2869–2883, 2012.

IEEE Commun. Mag. (2)

M. Jinno, H. Takara, Y. Sone, K. Yonenaga, and A. Hirano, “Multiflow optical transponder for efficient multilayer optical networking,” IEEE Commun. Mag., vol. 50, no. 5, pp. 56–65, 2012.

O. Gerstel, M. Jinno, A. Lord, and S. B. Yoo, “Elastic optical networking: A new dawn for the optical layer?” IEEE Commun. Mag., vol. 50, no. 2, pp. s12–s20, 2012.

IEEE Internet Comput. (1)

G. Goth, “Software-defined networking could shake up more than packets,” IEEE Internet Comput., vol. 15, no. 4, pp. 6–9, 2011.

IEEE Sel. Areas Commun. (1)

R. Casellas, R. Muñoz, J. M. Fabrega, M. S. Moreolo, R. Martinez, L. Liu, T. Tsuritani, and I. Morita, “Design and experimental validation of a GMPLS/PCE control plane for elastic CO-OFDM optical networks,” IEEE Sel. Areas Commun., vol. 31, no. 1, pp. 49–61, 2013.

IETF draft-ietf-ccamp-flexi-grid-fwk (work in progress) (1)

O. G. d. Dios, R. Casellas, F. Zhang, X. Fu, D. Ceccarelli, and I. Hussain, “Framework and requirements for GMPLS based control of flexi-grid DWDM networks,” IETF draft-ietf-ccamp-flexi-grid-fwk (work in progress), 2014.

IETF draft-ietf-pce-pce-initiated-lsp (work in progress) (1)

E. Crabbe, I. Minei, S. Sivabalan, and R. Varga, “PCEP extensions for PCE-initiated LSP setup in a stateful PCE model,” IETF draft-ietf-pce-pce-initiated-lsp (work in progress), 2013.

IETF draft-ietf-pce-stateful-pce (work in progress) (1)

E. Crabbe, J. Medved, I. Minei, and R. Varga, “PCEP extensions for stateful PCE,” IETF draft-ietf-pce-stateful-pce (work in progress), 2013.

IETF RFC 5440 (1)

J. P. Vasseur and J. L. Le Roux, (Eds.), “Path computation element (PCE) communication protocol (PCEP),” IETF RFC 5440, 2009.

IETF RFC 5557 (1)

Y. Lee, J. L. Le Roux, D. King, and E. Oki, “Path computation element communication protocol (PCEP) requirements and protocol extensions in support of global concurrent optimization,” IETF RFC 5557, 2009.

IETF RFC 6020 (1)

M. Bjorklund, “YANG—A data modelling language for the network configuration protocol (NETCONF),” IETF RFC 6020, 2010.

IETF RFC 6241 (1)

R. Enns, M. Bjorklund, J. Schoenwaelder, and A. Bierman, “Network configuration protocol (NETCONF),” IETF RFC 6241, 2011.

IETF RFC4655 (1)

A. Farrel, J.-P. Vasseur, and J. Ash, “A path computation element (PCE)-based architecture,” IETF RFC4655, 2006.

J. Lightw. Technol. (1)

F. Cugini, F. Paolucci, G. Meloni, G. Berrettini, M. Secondini, F. Fresi, N. Sambo, L. Poti, and P. Castoldi, “Push-pull defragmentation without traffic disruption in flexible grid optical networks,” J. Lightw. Technol., vol. 31, no. 1, pp. 125–133, 2013.

J. Opt. Commun. Netw. (1)

Opt. Exp. (2)

R. Muñoz, R. Casellas, R. Martínez, L. Liu, T. Tsuritani, and I. Morita, “Experimental evaluation of efficient routing and distributed spectrum allocation algorithms for GMPLS elastic networks,” Opt. Exp., vol. 20, no. 28, pp. 28 532–28 537, 2012.

R. Vilalta, R. Muñoz, R. Casellas, and R. Martínez, “Dynamic virtual GMPLS-controlled WSON using a resource broker with a VNT manager on the adrenaline testbed,” Opt. Exp., vol. 20, no. 28, pp. 29 149–29 154, 2012.

Photon. Netw. Commun. (1)

L. Gifre, F. Paolucci, A. Aguado, R. Casellas, A. Castro, F. Cugini, P. Castoldi, L. Velasco, and V. López, “Experimental assessment of in-operation spectrum defragmentation,” Photon. Netw. Commun., vol. 27, pp. 128–140, 2014.

Other (12)

R. Muñoz, R. Vilalta, R. Casellas, R. Martínez, S. Frigerio, and A. Lometti, “Design and experimental evaluation of dynamic inverse-multiplexing provisioning in GMPLS-controlled flexi-grid DWDM networks with sliceable OTN BVTs,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 22–26, 2013, pp. 1–3.

R. Casellas, R. Martínez, R. Muñoz, L. Liu, T. Tsuritani, and I. Morita, “Dynamic provisioning via a stateful PCE with instantiation capabilities in GMPLS-controlled flexi-grid DWDM networks,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 2013, pp. 1–3.

Interfaces for the Optical Transport Network (OTN), ITU-T G.709, 2009.

R. Muñoz, R. Vilalta, M. S. Moreolo, J. Fàbrega, R. Casellas, F. Vílchez, R. Martínez, S. Frigerio, and A. Lometti, “Dynamic differential delay aware RMSA for elastic multi-path provisioning in GMPLS Flexi-grid DWDM networks,” presented at the Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf., Anaheim, CA, USA, Mar. 9–13, 2014.

O. N. Foundation, “Onf white paper, software-defined networking: The new norm for networks,” Tech. Rep., Open Networking Foundation(ONF) White Paper, 2012.

R. Munoz, R. Casellas, and R. Martínez, “Dynamic distributed spectrum allocation in GMPLS-controlled elastic optical networks,” in Proc. Eur. Conf. Exhib. Opt. Commun., 2011, pp. 1–3.

R. Muñoz, R. Casellas, and R. Martínez, “PCE: What is it, how does it work and what are its limitations? (Tutorial),” presented at the Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf., Anaheim, CA, USA, Mar. 17–21, 2013.

S. Seetharaman, “OpenFlow/SDN tutorial OFC/NFOEC,” in Proc. Opt. Fiber Commun. Conf. Expo./Nat. Fiber Opt. Eng. Conf, 2012, pp. 1–52.

Spectral Grids for WDM Applications: DWDM Frequency Grid, ITU-T Recommendation G.694.1, 2012.

M. S. Moreolo, J. Fàbrega, F. Vílchez, L. Nadal, V. López, and G. Junyent, “Experimental validation of an elastic low-complex OFDM-based BVT for flexi-grid metro networks,” in Proc. 39th Eur. Conf. Exhib. Opt. Commun., 2013, pp. 1–3.

N. Amaya, G. Zervas, B. Rahimzadeh Rofoee, M. Irfan, Y. Qin, and D. Simeonidou, “Field trial of a 1.5 tb/s adaptive and gridless OXC supporting elastic 1000-fold bandwidth granularity,” in Proc. Eur. Conf. Exhib. Opt. Commun., 2011, pp. 1–3.

R. Munoz, V. Lopez, R. Casellas, O. G. de Dios, F. Cugini, N. Sambo, A. D’Errico, O. Gerstel, D. King, S. Lopez-Buedo, P. Layec, A. Cimmino, R. Martinez, and R. Morro, “IDEALIST control and service management solutions for dynamic and adaptive flexi-grid DWDM networks,” in Proc. Future Netw. Mobile Summit, 2013, pp. 1–10.

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