Mr. Shimizu’s paper about Hardware Based Scalable Path Computation Engine for Multilayer Traffic Engineering in GMPLS networks was accepted for ECOC2008 presentation.

Title: “Hardware Based Scalable Path Computation Engine for Multilayer Traffic Engineering in GMPLS networks”
Authors: Sho Shimizu, Taku Kihara, Yutaka Arakawa, Naoaki Yamanaka, and Kosuke Shiba
Abstract: A parallel data-flow hardware based path computation engine that makes multilayer traffic engineering more scalable is proposed. The engine achieves 100 times faster than conventional path computation scheme.

Mr. Kasahara’s paper about PLZT High-Speed Optical Slot Switching (OSS) was accepted for a presentation at PS2008.

Title: “P2P HD Contents Transport Network based on PLZT High-Speed Optical Slot Switching (OSS)”
Authors: Teruo Kasahara, Kazumasa Tokuhashi, Kou Kikuta, Daisuke Ishii, Yutaka Arakawa, Satoru Okamoto and Naoaki Yamanaka
Abstract: We design and implement a new HD class contents transport network with GMPLS-based Optical Slot Switching system which consists of 10ns switching PLZT optical switch and Ethernet/Optical Slot protocol converter as edge router.

Mr. Nishida made a presentation at Technical Meeting in June.
The titles and authors are as follows.

6/12,13 Technical Meeting on Photonic Network @Chitose Institute of Science and Technology(Hokkaido)
○Masahiro Nishida, Sho Shimizu, Daisuke Ishii, Yutaka Arakawa, Satoru Okamoto, Naoaki Yamanaka (Keio Univ.)
Approach of Flexible-Switch for Next-Generation Layer-2 Network

Ms. Terasawa’s paper about Fast Fault Recovery Method For Wide Area Ethernet was accepted for a presentation at PS2008.

Title: “Fast Fault Recovery Method With Pre-established Recovery Table For Wide Area Ethernet”
Authors: Midori Terasawa, Masahiro Nishida, Sho Shimizu, Yutaka Arakawa, Satoru Okamoto and Naoaki Yamanaka
Abstract: We propose a fault recovery method, in which nodes can send frames without waiting for path switching to be completed. In this method frame loss can be decreased to 20 % or less.We implemented a VLAN swapping function on Linux based PC and controlled the function by using GMPLS. In the experimental network, we used VLAN tag swapping switches that implemented by Linux PC. Multiple paths can be established by VLAN tag based switching that includes VLAN tag swapping.

Dr. Okamoto’s paper about Ethernet in-band GMPLS communication channel prototype system was accepted for a poster presentation at ECOC2008.

Title: “Experiment of the In-band Message Communication Channel for GMPLS Controlled Ethernet”
Authors: Satoru Okamoto, Sho Shimizu, Yutaka Arakawa, Naoaki Yamanaka
Abstract: In-band Message Communication Channel, which can transport IP packets, for GMPLS protocols is implemented. The prototype system with Mac-in-Mac Ethernet transport mechanism and GMPLS Ethernet control is successfully demonstrated.

Dr. Okamoto’s paper about ASON and GMPLS domains interworking was published in IEEE Communications Magazine.

Title: “Multi-ASON and GMPLS Network Domain Interworking Challenges”
Authors: Satoru Okamoto (Keio University), Hideki Otsuki (NICT), Tomohiro Otani (KDDI R&D Labs.)
Abstract: This article describes the intercarrier external network-to-network interface development challenges at the Kei-han-na Info-Communications Open Laboratory. The E-NNI prototype that was developed provides interworking functionality between the automatically switched optical network control plane function of the IITU-T and the generalized multiprotocol label-switching control plane function of the IETF. In this article, an analysis of the differences between ASON network technologies and GMPLS network technologies, a detailed signaling protocol and routing protocol interworking mechanism, and the interworking experimental results of nationwide ASON and GMPLS network domains are described.

Yamanaka Lab. will exhibit the booth to the third international conference iPOP2008 in NTT Musashino Research and Development Center on June 5th and 6th.
The demonstration of GMPLS VLAN Path Establishment using Inter-domain VLAN Tag Swapping is exhibited in the booth.

Related news: Mr. Kikuta’s Paper about GMPLS Controlled Ethernet Experiment was Accepted for a Poster Presentation at iPOP2008

Dr. Ishii’s paper about control functions for next generation wide area layer 2 network was accepted for iPOP2009 as follows.

Title: Experiments of GMPLS based layer2 path control functions for next generation wide area layer2
Author: Daisuke Ishii, Kou Kikuta, Masahiro Nishida, Yutaka Arakawa, Satoru Okamoto, Naoaki Yamanaka
Abstract: As increasing Ethernet service users and enhancing service functions, a next generation wide area layer2 network beyond the state-of-the-art carrier grade Ethernet is expected. This presentation shows GMPLS controlled Next Generation Layer2 (NGL2) network. The presentation also shows the results of the experiment about establishing a path in NGL2 network by RSVP-TE.

Mr. Hayashitani’s paper was published in IEICE ELEX.

Title: 10ns High-speed PLZT optical content distribution system having slot-switch and GMPLS controller
Authors: Masahiro Hayashitani(1), Teruo Kasahara(1), Daisuke Ishii(1), Yutaka Arakawa(1), Satoru Okamoto(1), Naoaki Yamanaka(1), Naganori Takezawa(2) and Keiichi Nashimoto(2)
(1) Keio University
(2) Nozomi Photonics Co., Ltd.
Abstract:
We have developed the high-speed PLZT ((Pb, La)(Zr, Ti) O3) optical content distribution system having slot-switch and GMPLS controller in the 1X8 distribution switch. The switching speed of our developed system is less than 10 nsec and the world fastest switching time in the optical switch with more than 8 outputs. The system can switch transparent time slot whose size can range from 10 nsec to 1 sec. Each slot is reserved very quickly by an extended Resource reSerVation Protocol (RSVP) message that is now being standardized for the GMPLS control plane. According to calculations, the proposed system can handle more than 500 users with minimum receiving power of -18dBm, which is about an 8 fold improvement over Passive Optical Network (PON). We consider that the system well supports content distribution in the access network.
Keywords: GMPLS, PLZT, slot-switch

Mr. Nishida received the young researchers award from the IEICE Technical Committee on Photonic Network (PN) .
Congratulations!!!!