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!!!!
Mr. Miyagi received the telecom system technological student award.
Title : Advanced Wavelength Reservation Method Based on Deadline-Aware Scheduling for Lambda Grid Networks
Abstract : A deadline-aware-scheduling scheme for the lambda grid system is proposed to support a huge computer grid system based on an advanced photonic network technology. The assignment of wavelengths to jobs in order to efficiently carry various services is critical in lambda grid networks. Such services have different requirements such as the job-completion deadlines, and wavelength assignment must consider the job deadlines. The conventional job scheduling approach assigns a lot of time slots to a call within a short period in order to finish the job as quickly as possible. This raises the blocking probability of short deadline calls. Our proposal assigns wavelengths in the lambda grid networks to meet quality-of-services guarantees. The proposed scheme assigns time slots to a call over time according to its deadline, which allows it to increase the system performance in handling short deadline calls, for example, lowering their blocking probability. Computer simulations show that the proposed scheme can reduce the blocking probability by a factor of 100 compared with the conventional scheme under the low load condition in which the ratio of long deadline calls is high. The proposed scheduling scheme can realize more efficient lambda grid networks.
Mr. Kikuta’s paper about GMPLS controlled Ethernet experiment was accepted for a poster presentation at iPOP2008.
Title: “Experiment of End-to-End VLAN Path Establishment using Inter-domain VLAN Tag Swapping in Wide-Area-Ethernet Controlled by GMPLS”
Authors: Kou Kikuta, Masahiro Nishida, Daisuke Ishii, Satoru Okamoto, Naoaki Yamanaka
Abstract: Wide-Area-Ethernet Service provides multiple inter-connections among customers’ LANs. In Wide-Area-Ethernet network, Virtual paths are established on layer-2 by VLAN (Virtual LAN) technology. Network switches read VLAN tag, path identification extended bit in Ethernet frame, and determine forwarding direction for each frame. We need to setup VLAN configuration of each switch to establish new path. GMPLS is able to setup the switches’ configuration automatically and establish the new path just after customer demand. We are researching on this protocol’s details, exchanged VLAN information, controlling switches, using limited numbers of VLAN IDs, and others. We presentation addresses Layer-2 Switching Capability (L2SC) with VLAN tag swapping. In Wide-Area-Ethernet network, same VLAN ID is used throughout a path. However, a number of VLAN ID is limited to 4096 due to extended frame format, thus there is a limit to the number of paths. VLAN swapping enables to use more VLAN IDs in a network like a Wavelength Converter.
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.