1. Status of RTH Tokyo Japan Meteorological Agency Presented by Kenji Tsunoda Joint implementation-coordination meeting on the GTS-WIS MTN and meeting of the CBS Expert Team on GTS-WIS operations and implementation (ET-OI) Geneva, 23-26 September 2008

2. 1. Current status of the GTS -Region II (Asia)-

3. 2. GTS links connected with RTH Tokyo Tokyo Manila Bangkok New Delhi Beijing Hong Kong Khabarovsk Seoul Melbourne Washington Melbourne 192kbps 64kbps Frame Relay (FR) Network-to-network Interconnections 128kbps Seoul Khabarovsk 64 kbps Dedicated line connections BT FR Network (Cloud I) 1.5 Mbps 256 kbps 1.5 Mbps Improved MTN (Two Seamless Networks) 1Mbps 2 Mbps Hong Kong Bangkok OBS MPLS Network (Cloud II) MTN All links are being operated on TCP/IP basis. Six of nine are IP over Frame Relay. Two of nine are MPLS. New Delhi Beijing Regional Telecommunication Hub (RTH) Tokyo Manila KDDI FR Network CAT PCCW DACOM 64kbps PLDT FR Network 128 kbps Regional circuits

4. CircuitProtocolExchange data type Washington TokyoMTN TCP/IP Socket FTP (only from WT to TK) Message (A/N, binary, fax) File (Satellite data) Melbourne TokyoMTN TCP/IP Socket FTP Message (A/N, binary, fax) File (Satellite data) Beijing TokyoMTN TCP/IP Socket FTP Message (A/N, binary, fax) File (Satellite data) New Delhi TokyoMTNTCP/IP SocketMessage (A/N, binary) Bangkok TokyoRMTNTCP/IP SocketMessage (A/N, binary) Khabarovsk TokyoRMTNTCP/IP SocketMessage (A/N, binary, fax) Seoul TokyoRMTN TCP/IP Socket FTP Message (A/N, binary, fax) File (Satellite data) Hong Kong TokyoRMTN TCP/IP Socket FTP Message (A/N, binary) File (Satellite and one week ensemble data) Manila Tokyo Inter- regional TCP/IP SocketMessage (A/N, binary) 3. Implementation status of GTS circuits

5. 4. Traffic status of the Tokyo-Washington link CIR=32kbps CIR=768kbps Tokyo FR Washington 1.5Mbps 1093 Mbytes/day 25 Mbytes/day 50% of CIR 40% of CIR

6. 5. Traffic status of the Tokyo-Melbourne link CIR=16kbps CIR=32kbps Tokyo FR Melbourne 256kbps 1.5Mbps 191 Mbytes/day 135 Mbytes/day 200% of CIR 100% of CIR

7. 6. Traffic status of the Tokyo-Beijing link Tokyo MPLS Beijing 2 Mbps 1 Mbps 434 Mbytes/day 441 Mbytes/day

8. 7. Traffic status of the Tokyo-New Delhi link Tokyo MPLS New Delhi 128 kbps 1 Mbps 3 Mbytes/day 41 Mbytes/day

9. 8. Traffic status of the Tokyo-Khabarovsk link Tokyo Dedicated line Khabarovsk 64 kbps 1 Mbps 2 Mbytes/day 17 Mbytes/day

10. 9. Traffic status of the Tokyo-Bangkok link Tokyo FR Bangkok 128kbps192kbps FR CIR=16kbps 2 Mbytes/day 59 Mbytes/day 100% of CIR

11. 10. Traffic status of the Tokyo-Hong Kong link Tokyo FR Hong Kong 64kbps192kbps FR CIR=16kbps 170 Mbytes/day 100% of CIR 7 Mbytes/day

12. 11. Traffic status of the Tokyo-Seoul link CIR=16kbps Tokyo FR Seoul 64kbps192kbps FR 233 Mbytes/day 18 Mbytes/day 100% of CIR

13. 12. Traffic status of the Tokyo-Manila link CIR=16kbps Tokyo FR Manila 64kbps192kbps FR 45 Mbytes/day 1 Mbytes/day 100% of CIR

14. Major functions supporting GTS operations + Message and Fax exchanges by both socket and so-called batched ftp through GTS + File exchanges by ftp through GTS + Collection of observational data by e-mail via the Internet Message/File Switching System Intranet systems NWP system Back-end system UNIX Operating system CPU 1.9GHz X 4 Memory 8GB UNIX Operating system CPU 1.9GHz X 4 Memory 8GB Message editing Fax format conversion BUFR encode & decode WMO monitoring Shared disk GTS links GTS links cluster control Interne t 13. GTS facilities in RTH Tokyo -Conceptual design- Central telecommunication facility in JMA was fully replaced in October 2005. The new GTS switching system is composed by two UNIX servers in a cluster.

15. 14. JMA Internet Connection DMZ Load Balancer Public Servers JMA Intra- net ISP #1 Router Controllers Firewalls Packet Shapers 20Mbps Internet ISP #2 20Mbps Multi-homed connections for reliability FTP Servers Multi-homed connections to Internet with two dedicated links since 2001Multi-homed connections to Internet with two dedicated links since 2001 Two 20 Mbps links in operation: one since February 2005, the other since March 2006Two 20 Mbps links in operation: one since February 2005, the other since March 2006 2007 2008 ISP #1 ISP #2

16. Thank you