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Status of Implementation TCP/IP at RTH Beijing

This document provides an update on the implementation of TCP/IP at RTH Beijing NMIC and CMA's new upgrade, including links to Pyongyang, Bangkok, Offenbach, Tokyo, Moscow, and New Delhi. It also discusses file naming conventions, internet connections, and future plans.

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Status of Implementation TCP/IP at RTH Beijing

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  1. Status of Implementation TCP/IP at RTH Beijing NMIC, CMA

  2. New upgrade • Link to Pyongyang • ASYNC, 75 Baud -> IP, 64kbps • Link to Bangkok • X.25, 9.6kbps -> IP, 64kbps • Links to Offenbach, Tokyo, Moscow, New Delhi • FR -> MPLS • 256kbps -> 2Mbps New connection • RTH Beijing - EUMETSAT • Established over MPLS VPN in July, 2007 CBS ET-CTS meeting, Toulouse, France, 26-30May 2008

  3. TCP/IP implementation status * Hong Kong, Macao connected with Beijing via Guangzhou CBS ET-CTS meeting, Toulouse, France, 26-30May 2008

  4. File naming conventions • WMO file naming conventions • Messages with AHL • CCCCNNNNNNNN.a, CCCCNNNNNNNN.b, CCCCNNNNNNNN.f • Satellite data • CMA satellite data: pflag=A • RARS data: pflag=Z • Other file naming conventions • NESDIS ATOVS data filename convention • Filename conventions used for EUMETCast and FENGYUNCast • CMA filename conventions (for bilateral data exchange) CBS ET-CTS meeting, Toulouse, France, 26-30May 2008

  5. Internet connection • 1Gbps access rate, 130Mbps protocol rateTwo access lines for redundancyExchanging the operational data and TIGGE data CBS ET-CTS meeting, Toulouse, France, 26-30May 2008

  6. Usage of Internet CBS ET-CTS meeting, Toulouse, France, 26-30May 2008

  7. Future plans • Establish backup connection to the MTN links through Internet VPN • Participating the IPSec-based VPN test organized by ECMWF • Upgrade the Beijing-Hanoi GTS connection from the current ASYNC circuit to an IP link CBS ET-CTS meeting, Toulouse, France, 26-30May 2008

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