Technology to Operate and Maintain Transport System for Handling Spikes and Variations in Traffic 森川久 半田利光 嘉門憲男 あらまし ASON Automatically Switched Optical Network Abstract The amount of global mobile data traffic has been growing rapidly in recent years. This is due, in part, to the increasing number of mobile devices such as smartphones or tablets. Such devices allow the user to access various types of image data, streamed content or anything in the cloud, and they account for much more data traffic than ever before. This tendency is also seen in Japan, where the resources that are available currently fluctuate depending on the demand of traffic, and they are forecast to be depleted especially in urban areas in the immediate future. In this paper, first we review Japan s current network technologies and examine the problems that they have. Then, we present Fujitsu s new technology which will be key to solving those problems. Next, we consider what will happen when this new technology is applied, including some new problems that will arise when operating networks. Last, we refer to Automatically Switched Optical Network (ASON), a concept that various parties are discussing with a view to making it internationally standardized, and depict future networks. 718 FUJITSU. 63, 6, p. 718-725 11, 2012
Lトラフィックの急増と変動に対応するトランスポート系運用管理技術 まえがき ASON Automatically Switched Optical Network ASON 伝送ネットワークの現状 図 -1 1 L0 DWDM Dense Wavelength Division Multiplexing OADM Optical Add Drop Multiplexing WDM Wavelength ー B ー C LL1EL2-1 NNW-OPS ット ークの ー L2Ethernet Ethernet STM-64 L2 L1 L0 0WDM -OPS PW-LSP NW-OPS 0 ー A NW-OPS L1-OPS LSP-SDH L2L2NW-OPS -OPS SDH-WDM NW-OPS NW-OPS FUJITSU. 63, 6 11, 2012 719
Division Multiplexing 2 L1 SDH Synchronous Digital Hierarchy SDH 3 L2 L2 Ethernet -OPS Network Element- Operation System NW-OPS Network-Operation System L0 WDM L0 L1 SDH L1 L2 L2 -OPS NW-OPS 新しい伝送ネットワークとは ALL IP OPEX Operating Expense CAPEX Capital Expenditure 2 1 ROADM Reconfigurable Optical Add/Drop Multiplexer / OXC Optical Cross Connect L0 L2 2 1 WDM ROADM/OXC L0 2 WDM 3 WDM L2 ROADM/OXC L0 MPLS-TP Multi-Protocol Label Switching-Transport Profile L2 ROADM/OXC L0 L2 CAPEX 720 FUJITSU. 63, 6 11, 2012
4 SDH L1 QoS Quality of Service L2 MPLS-TP MPLS-TP Connection-Oriented OAM Operation Administration and Maintenance / 図 -2 L0 L2 L2 MPLS-TP LSP L1 -OPS L0 L2 ネットワーク運用管理の取組み -OPS -OPS NW-OPS レイヤ統合表示 操作 図 -3 ット ークの ー L0/L2 MPLS-TP L2 MPLS-TP L2 ー A ー B ー C トン LSP#1 トン LSP#2 WDM L0 -OPS PW-WDM NW-OPS NW-OPS NW-OPS -2 FUJITSU. 63, 6 11, 2012 721
L0 管理 L0#1 L0#2 L2 管理 L2#1 L2#2 L2#3 L2#4-3 OPEX -OPSマシンの削減 1 -OPS 2 -OPS 1000 -OPS 図 -4 NW 1000 10 000 3 4 NW-OPS NW-OPS - - - - -OPS ASON の構成 ASON 2001 ITU-TMP/CP/TP 1 MP Management Plane ASON CP 722 FUJITSU. 63, 6 11, 2012
2 CP Control Plane ASON 3 TP Transport Plane MP CP CP ASON 図 -5 NW-OPS -OPS NW 管理 -OPS#1 管理 -OPS#2 管理 -OPS#10 管理 ス ー ト DCN ット ーク -4 -OPS ー ット ーク L2 SDH ット ーク L1 光 ット ーク L0 Control Plane ー ット ーク L2 SDH ット ーク L1 光 ット ーク L0 Transport Plane CP 管理 TP LN Manager Management Plane 管理 DCN ース管理 ン ITU-T G.8080 Architecture for the automatically Switched Optical network -5 ASON FUJITSU. 63, 6 11, 2012 723
ASON 運用の課題と標準化動向 ASON ASON 1 Architecture for the automatically switched Optical networks ITU-T G.8080 1 MP/CP/TP CP/MP MP CP MP 2 Architecture of control plane operation ITU-T G.7716 2 ASON ASON G.8080 MP/CP/TP 3 Framework for ASON management ITU-T G.7718 3 ASON MP/CP/TP CP MP CP EMS Element Management System NMS Network Management System ASON 1 2001 2 2010 3 2005 OIF Optical Interworking Forum CP 4 ASON 5 むすび IP 参考文献 1 ITU-T G.8080 Architecture for the automatically Switched Optical network 2001-11 http://www.itu.int/rec/t-rec-g.8080-200111-s/en 2 ITU-T G.7716 Architecture of control plane operation 2010-01 http://www.itu.int/rec/t-rec-g.7716-201001-i/en 3 ITU-T G.7718 Framework for ASON management 2005-02 http://www.itu.int/rec/t-rec-g.7718-200502-s/en 4 OIF Optical Internetworking Forum OSS Control Plane Management Whitepaper oif2010.329.06 5 OPSFUJITSU Vol.57 No.4 p.409-414 2006 724 FUJITSU. 63, 6 11, 2012
著者紹介 森川久 ( もりかわひさし ) 嘉門憲男 ( かもんのりお ) 半田利光 ( はんだとしみつ ) FUJITSU. 63, 6 11, 2012 725