Ms. Terasawa’s paper about the fault recovery in L2 network was accepted in ICC.

Title: “Recover-Forwarding Method In Link Failure With Pre-established Recovery Table For Wide Area Ethernet”

Authors: Midori Terasawa, Masahiro Nishida, Sho Shimizu, Yutaka Arakawa, Satoru Okamoto, Naoaki Yamanaka

Abstract: This paper proposes a fast fault recovery method for the wide area Ethernet. To achieve fast recovery, a pre-established forwarding table is introduced. The pre-established table is looked up when a fault occurs, and frames are forwarded without frame loss. Ethernet lacks of fault recovery features required in Wide Area Network (WAN) since it is originated as Local Area Network (LAN) technology. Protection or restoration is a typical method for fault recovery, but a lot of frame losses are inevitable. Our proposal can decrease frame losses since frames are forwarded without waiting for path switching to be completed to use the pre-preparation table. In addition, the proposed method can be operated with the legacy forwarding method seamlessly. The simulation results show that frame loss decreases to 40 % or less with our proposed method.

The second master grader announced the master’s theses.
The speaker and the title are shown as follows.

Ryouta Usui:
A Study on Service-Parts Discovery System and Their Connection Method for Ubiquitous Grid Networking (uGrid)

Mikio Kaneko:
A Study and Implementation on the New Generation P2P Networks using GMPLS Dynamic Path Establishment

Masahiro Nishida:
Dynamic Reconfiguration of Layer-2 Switch Architecture Triggered by Path-setup

Kazuki Irie:
A Study on Contents Download Method to Reduce Server Load in CDN

Kou Kikuta:
Establishing of Domain Tag Swapped Path on Wide Area Layer-2 Network by GMPLS controlling

Taku Kihara:
Proposal and Implementation of Fast Optimal Protection Path Calculation Algorithm Suitable for Dynamically Reconfigurable Processor DAPDNA-2

KEIO TECHNOMALL was held in Tokyo International Forum on December 19, 2008.
Yamanaka laboratory exhibited two booths.

• Active Optical Access Network -ActiON-
• Next Generation Layer2 Network Technologies

100 or more participants came to the booths in Yamanaka laboratory.
A lot of positive question and answer was done in the booths and we got a lot of valuable opinions.

Keio Techno-Mall Website

Research on active optical access network was introduced as the attractive research in the press release of KEIO TECHNO-MALL 2008

Mr. Kikuta’s letter paper about Multi-Domain VLAN Path Signaling was accepted in the IEICE Trans. on Communications.

Title: “Multi-Domain VLAN Path Signaling Method having Tag Swapping Function for GMPLS controlled Wide Area Layer-2 Network”

Mr. Kikuta’s paper about establishment of VLAN tag swapped path on the wide area layer-2 network was accepted for NFOEC2009 poster.

Title: Establishment of VLAN Tag Swapped Path on GMPLS Controlling Wide Area Layer-2 Network

Author: Kou Kikuta, Masahiro Nishida, Daisuke Ishii, Satoru Okamoto, Naoaki Yamanaka

Abstract: GMPLS controlled multi-domain end-to-end layer-2 path establishment with VLAN tag swapping is demonstrated. Two kinds of signaling　mechanisms to realize tag swapping are implemented on prototype layer-2　switch systems and both mechanisms are evaluated.

Dr. Okamoto’s paper about end-to-end ethernet VLAN path provisioning over multi ASON and GMPLS network domains was accepted for NFOEC2009 presentation.

Title: Multi ASON and GMPLS Domains Interworking Trials for Automatically Switched Ethernet VLAN Path Provisioning

Author: Satoru Okamoto(1), Kou Kikuta(1), Daisuke Ishii(1), Shuichi Okamoto(2), Tomohiro Otani(2), and Hideki Otsuki(3)
(1): Keio University, 3-14-1 Hiyoshi Kouhoku-ku, Yokohama-shi, Kanagawa 223-8522, Japan
(2): KDDI R&D Laboratories Inc., 2-1-15 Ohara Fujimino-shi, Saitama 356-8502, Japan
(3): National Institute of Information and Communications Technology, 4-2-1 Nukui-kita, Koganei-shi, Tokyo 184-8795, Japan

Abstract: Seamless end-to-end Ethernet VLAN path provisioning over multiASON and GMPLS network domains is successfully achieved. Two interworking scenarios 1) ASON and GMPLS, 2) GMPLS and GMPLS are confirmed in both control and data planes.

Yamanaka Lab. was accepted to join the Cell User’s Group.

The Cell User’s Group is an open organization established by the System LSI Division of Toshiba Corporation, Semiconductor Company.
The group is intended for various fields of business and institutions such as: companies or organizations which research, develop, and manufacture Cell Broadband Engine(Cell/B.E.) or SpursEngine products; software developers; universities; and research institutions.

Yamanaka Lab. will run two booths.

• Active Optical Access Network -ActiON-
• Next Generation Layer2 Network Technologies

Details are as below.

Time and Date: December 19, 2008 10:00-17:00
Place: Tokyo International Forum B Block 5th & 7th floors
Admission: Free

Please go to Keio Technomall Website for　more informations.

Mr. Ishii and Dr. Okamoto’s paper co-worked with Dr. Imajuku of NTT communications etc. was accepted in IEEE Communications Magazine.

Title: “Multi-Area MPLS/GMPLS Interoperability Trial Over ROADM/OXC Network”

Authors: Wataru Imajuku, Eiji Oki(NTT Laboratories), Rajiv Papneja(Isocore), Shinichiro Morishita(TOYO Corporation), Kenichi Ogaki, Masanori Miyazawa(KDDI R&D Laboratories Inc.), Keiji Miyazaki(Fujitsu Laboratories Ltd.), Hiroaki Nakazato(Fujitsu Ltd.), Hidetsugu Sugiyama, John Allen(Juniper Networks), Shinichi Hasegawa, Nobuhiro Sakuraba(ITOCHU Techno-Solutions Corporation), Itaru Nishioka(NEC Corporation), Shoichiro Seno(Mitsubishi Electric Corporation), Yoshihiro Nakahira(Oki Electric Industry Co., Ltd.), Daisuke Ishii, Satoru Okamoto(Keio University), Tara Van Unen(Agilent Technologies, Inc.), Mark Blumhardt(Alcatel USA Inc.), Hari Rakotoranto(Cisco Systems, Inc.), Vijay Pandian(Sycamore Networks)

Abstract: This article describes the first multi-area Multi-Protocol Label Switching (MPLS) and Generalized MPLS interoperability trial over Reconfigurable Optical Add/Drop Multiplexer (ROADM) and Optical Cross-Connect (OXC) network. The interoperability trial demonstrated the routing of Label Switched Paths (LSPs) over a multi-area GMPLS controlled ROADM/OXC network and the control of Ethernet over MPLS (EoMPLS) transport service on top of the GMPLS network. The trial was conducted using various network elements provided by 14 institutions and was carried out at Tokyo and Virginia. This article introduces the motivation of the trial, technical issues related to controlling multi-area MPLS/GMPLS networks, test network topology, and experimental results. The results show that the interior gateway routing protocol based multi-area routing architecture is a promising solution for the nationwide deployment of GMPLS networks within a carrier domain. Furthermore, this article discusses the technical issues of routing constraints in ROADM/OXC networks and the limit of multi-area routing without Path Computation Element Protocol (PCEP).