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IMTN and managed data network services

IMTN and managed data network services. Hiroyuki ICHIJO (Japan Meteorological Agency. Technical Conference on the WIS (Seoul , 6-8 November 2006). MTN configuration. The Main Telecommunication Network (MTN) interconnects 6 Regional

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IMTN and managed data network services

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  1. IMTN and managed data network services Hiroyuki ICHIJO (Japan Meteorological Agency Technical Conference on the WIS(Seoul, 6-8 November 2006)

  2. MTN configuration The Main Telecommunication Network (MTN) interconnects 6 Regional Meteorological Telecommunication Networks (RMTNs) as a core of the GTS. The MTN consists of 18 MTN Centres and 25 connections. Region VI Region II Region IV Region I Region III Region V

  3. Internet like applications • Saving implementation costs • and human resources • allowing latitude in selecting • a network service • Expanding bandwidth • Flexible connectivity • Saving recurrent cost Use of cost-effective network services Improved GTS Migration to TCP/IP Strategies Leased circuits Legacy protocols Traditional GTS Strategies to improve the GTS Strengthen the overall GTS capabilities with cost-effectiveness and technical trends

  4. File transfer File transfer Server/client Server/client Legacy protocol Legacy protocol Frame Relay IP-VPN TCP/IP TCP/IP Layer separation approach to the improved GTS Application layer Adding applications Message Switching Message Switching Transmission protocol layer Migration to TCP/IP Use of network services Transport layer

  5. Concepts of IMTN The CBS, at its 1998 extra-ordinary session, stressed that the MTN shall be reviewed fundamentally to meet evolving data exchange requirements of WMO Programmes other than the WWW. The IMTN project has been promoting the reform of the MTN capability as a genuine network since its commencement in 1999. Reform concepts are: (1) to provide capability and flexibility to meet new and future requirements by using technical innovation; (2) to seek cost-effectiveness with appropriate reliability and security; (3) to challenge establishment of a collaborative contractual framework; (4) to keep up with an appropriate pace for implementation, i.e. “early implementation leads early benefits.” A point of implementation strategy is the evolution from bilateral physical circuits to logical connections through seamless network “cloud”.

  6. Cloud I Tokyo Beijing Washington Melbourne Sofia Moscow New Delhi Prague Brasilia Exeter Buenos Aires Jeddah Offenbach Cloud II Nairobi Toulouse Cairo Dakar Algiers Status of the IMTN project The current IMTN is structured with two “clouds” of Frame Relay network services. • 17 of 25 MTN circuits are in operation on the Clouds. • 12 of 18 MTN centers participate in the Clouds.

  7. Details of Cloud I • Logical connections (PVC: Permanent Virtual Circuit) through BT Frame Relay network • Configuration of asymmetric bandwidths by CIR (Committed Information Rate) for unbalanced traffic conditions • Arrangement of backup re-routing with a dynamic routing protocol (BGP-4) Washington 1.5Mbps 32k Accesscircuit 1.5Mbps 32k 16k 4k 32k 768k BT Frame Relay 16k Exeter Tokyo 32k 64k 256kbps 4k 16k 32k 64k 16k 32k Primary PVC 16k 256kbps 256kbps BoM Backup PVC CIR in each direction [bps] Disaster Recovery SiteBrisbane Melbourne

  8. 25 Mbytes/day 55% of CIR CIR=32kbps CIR=768kbps Washington Tokyo FR 1.5Mbps 1.5Mbps 40% of CIR 1076 Mbytes/day Unbalanced traffic and asymmetric CIRs (Cloud I) Each pays for its local access circuit and an incoming CIR

  9. Washington Cloud I Tokyo BGP-4 Traffic on normal condition Melbourne Link failure Bypass traffic for backup BGP-4 Backup Re-routing (Cloud I)

  10. CPE CPE CPE CPE CPE CPE CPE CPE CPE Details of Cloud II • PVCs through OBS (Orange Business Service, former EQUANT) Frame Relay network under expansion of the European contract • Centralized network monitoring by ECMWF & Consumer Premise Equipment (CPE, Cisco Router) managed by OBS • Configuration of asymmetric bandwidths by CIR Moscow Beijing Sofia Tokyo 256kbps 256kbps 256kbps 128 kbps 16k Prague 8k 512kbps 16k 16k 8k 48k 96k 64k 8k 32k New Delhi 64kbps 8k Cloud II By OBS CPE 48k 32k 128k 512kbps Exeter 384k 16k 8k 64k 1024 kbps 2048 kbps 64kbps Toulouse Jeddah Offenbach

  11. Master Contract Accession Agreement Accession Agreement Accession Agreement Accession Agreement Accession Agreement Accession Agreement IMTN Cloud II Customer representative (ECMWF) Network service provider (OBS) Collaborative contract (Cloud II) Network monitoring Helpdesk Regional network in Europe (RMDCN in Region VI) Contract Expansion

  12. Benefits of IMTN The implementation of the IMTN brings various benefits: (1) further reliability  stable operation for real-time data exchange (2) better performance in throughput  exchange of large volume of data such as satellite data/products (3) manageable link parameters  efficient configuration to meet traffic conditions (4) flexibility and scalability  easy compliance with evolving requirements (5) cost-effectiveness  saving recurrent costs

  13. Migration from leased circuit, ATM and Frame Relay services to MPLS/IP-VPN (Multi Protocol Label Switching/IP-Virtual Private Network)is remarkable. • Layer 2 switching VPN is one of next-generation WAN services but premature in market. Market trends of global managed data network services Retail scale of global WAN services Estimation

  14. Market leaders : Equant (OBS at present), AT&T and BT/BT Infonet • Their strategies: • Extending service coverage by establishing new MPLS PoPs (Points of Presence) • Bilateral partnerships with national and regional telecom carriers for MPLS interoperability outside of their footprints • Fast-growth markets : Asia and Eastern Europe Market share of Tier-1 global network operators Global WAN service share (2nd quarter of 2005)

  15. IP IP MPLS/IP-VPN is one of most promising WAN services. MPLS/IP-VPN VPN group IP Label IP Label Core Router CE Closed IP network by a provider PE CE PE VPN group CE Core Router Core Router PE CE Provider’s PEs and Core Routers based on MPLS have Label Tables and switch IP packets forward according to the Tables. CE : Customer Edge Router VPN : Virtual Private Network PE : Provider Edge Router MPLS : Multi Protocol Label Switching

  16. GTS IMTN WIS core network Frame Relay MPLS/IP-VPN Cloud I Early 2007 End of 2007 MPLS/IP-VPN Frame Relay Cloud II Study of possibility of consolidation of two Clouds Coordination Future of IMTN • For further improvement, migration from Frame Relay to MPLS/IP-VPN is planned. MPLS/IP-VPN service provides: • flexibility of mesh connectivity among GISCs • additional bandwidth. The IMTN would function as a WIS core network linking a small number of GISCs together.

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