Status of the Global Telecommunication System connected

with RTH Tokyo

Sixth Meeting on Asia-Pacific Satellite Data Exchange and Utilization (APSDEU-6)

(KMA: Seoul, 1 to 3 June 2005)

Japan Meteorological Agency

Akihiko NAKAZONOOffice of International Communications

1. Current status of the GTS -MTN-

Exeter

Sofia

Network IINetwork II

Melbourne

Buenos Aires

TokyoBeijing

Nairobi

Washington

XI-2004

Network I

Jeddah

Prague

Toulouse

Dakar Algiers

Offenbach

Brasilia

CairoManaged

data communication network

New DelhiMoscow

Network I

• Tokyo has connectivity with four centers on the MTN• Tokyo is one of gateways interconnecting Networks I and II

AS one of the RTH on the MTN….

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

Vientiane

Ulaanbaatar

Baghdad

Doha

Kuwait

Bahrain

Dhaka

Yangon

Kathmandu

Kabul

Karachi

ColomboMale

Hanoi

Phnom Penh

PyongYang

Ashgabad

Macao

64K

Dushanbe

Almaty

NI

NI

NI

NI

Seoul

NI

NI

14.4-33.6K (V.34)

64K

14.4-33.6K V.34

9.6K

64K

128K

50

50

50

50

50

64K

200

2.4K

64K

100

75

1200

75

50

100

7575

9.6K

Melbourne

Offenbach

Offenbach

Cairo

Cairo

Algiers

Moscow

Kuala Lumpur

Tashkent

Novosibirsk Khabarovsk

Bangkok

Frame RelayCIR<16/16K>

Frame RelayCIR<16/16K>

Melbourne

Washington

Frame RelayCIR<16/16K>

NI

NI 14.4-33.6K (V.34)

14.4-33.6K (V.34)

14.4-33.6K (V.34)

Regional Meteorological Telecommunication Network for Region II (Asia)Current status as of December 2004

Bishkek

64K

2.4K

Singapore

9.6K

RTH in Region II

NMC in Region II

Centre in other region

MTN circuit

Regional circuitInterregional circuitAdditional circuit

Non-IP linkIP link

NI No implementation

14.4-33.6K (V.34)

Tehran

Sanaa200

Hong Kong

Moscow

NIFrame RelayCIR<32/32K>

Tokyo

Beijing

Frame RelayCIR<16/16K>

IMTN-MDCN CIR<32/768K>

IMTN-MDCNCIR<16/32K>

Manila

IMTN-MDCNFrame RelayCIR<48/48K>

Internet

Jeddah

Internet Internet

Internet

Muscat

Abu-Dhabi

NI

Id V.34

Id V.34

64K

64K

64K

Internet

Washington

Internet

14.4-33.6K (V.34) 14.4-33.6K (V.34)Via Moscow

IMTN-MDCNFrame RelayCIR<48/48K>

14.4-33.6K (V.34)

Frame RelayCIR<16/16K>Internet

IMTN-MDCNFrame RelayCIR<16/16K>

IMTN-MDCNFrame RelayCIR<8/8K>

IMTN-MDCNFrame RelayCIR<16/8K>

CMA-VSATCMA-VSAT

CMA-VSAT

64K

64K

64K

Thimpu

New Delhi

NI64K

64K

ISDN 128K

3. GTS links connected with RTH Tokyo

Tokyo

Manila

Bangkok

New Delhi

Beijing

Hong Kong

Khabarovsk

Seoul

Melbourne

Washington

Washington

Melbourne

192kbps

64kbps

64kbps

Frame Relay (FR) Network-to-

network Interconnections

128kbps

Seoul

Khabarovsk

14.4-28.8 kbps

Dedicated line connections

BT FR Network

(Cloud I)

1.5Mbps

256kbps

1.5Mbps

Improved MTN (Two Seamless Networks)

128kbps

256kbps

Hong Kong Bangko

k

Equant FR Network(Cloud II)

MTN

• All links are being operated on TCP/IP basis.

• Eight of nine are IP over FR.

New Delhi

Beijing

Regional Telecommunication Hub (RTH) Tokyo

ManilaKDDI

FR Network

CATCATFR FR

NetworkNetwork

HKTHKTFR FR

NetworkNetwork

DACOMDACOMFR FR

NetworkNetwork

64kbpsPLDTPLDT

FR FR NetworkNetwork

64kbps

Regional circuits

4. Traffic status of the Tokyo-Washington link

CIR=32kbpsCIR=768kbps

Tokyo FR Washington1.5Mbps1.5Mbps

0

1

2

3

4

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

FAXBINAN

27kbps line (83% of CIR)

0

5

10

15

20

25

30

35

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

FILE

FAX

BINAN

23 Mbytes/day

533 Mbytes/day

Tokyo to Washington (9 May 2005)

Washington to Tokyo (9 May 2005)

233kbps line (30% of CIR)

5. Traffic status of the Tokyo-Melbourne link

CIR=16kbpsCIR=32kbps

Tokyo FR Melbourne256kbps1.5Mbps

0

0.5

1

1.5

2

2.5

3

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

FAXBINANCIR

Tokyo to Melbourne (9 May 2005)

0

0.5

1

1.5

2

2.5

3

3.5

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

FILEFAXBINAN

Melbourne to Tokyo (9 May 2005)

16kbps line (100% of CIR)

23kbps line (73% of CIR)

85 Mbytes/day

32 Mbytes/day

6. Traffic status of the Tokyo-Beijing link

CIR=48kbps

Tokyo FR Beijing256kbps128kbps

CIR=48kbps0

0.5

1

1.5

2

2.5

3

3.5

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

FAXBINAN

Tokyo to Beijing (9 May 2005)

0

0.02

0.04

0.06

0.08

0.1

0.12

0.14

0.16

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

FAXBINAN

1kbps line (2% of CIR)

23kbps line (49% of CIR)

Beijing to Tokyo (9 May 2005)

47 Mbytes/day

2.5 Mbytes/day

7. Traffic status of the Tokyo-Seoul link

CIR=16kbpsCIR=16kbps

Tokyo FR Seoul

64kbps192kbps

FR0

1

2

3

4

5

6

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

FAXBINANCIR

00.010.020.030.040.050.060.07

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

BIN

AN

16kbps line (100% of CIR)

Seoul to Tokyo (9 May 2005)

Tokyo to Seoul (9 May 2005) 122 Mbytes/day

40kbps line (250% of CIR)

0.5kbps line (3% of CIR)

1.2 Mbytes/day

8. Traffic status of the Tokyo-Hong Kong link

CIR=16kbpsCIR=16kbps

Tokyo FR Hong Kong

64kbps192kbps

FR

0

1

2

3

4

5

6

7

8

9

10

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

FILEBINANCIR

00.005

0.010.015

0.020.025

0.03

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

BIN

AN

Tokyo to Hong Kong (9 May 2005) 209 Mbytes/day

60kbps line (94% of access circuit at Hong

Kong)

16kbps line (100% of CIR)

0.2kbps line (1.3% of CIR)

0.4 Mbytes/day

Hong Kong to Tokyo (9 May 2005)

9. GTS facilities in RTH Tokyo

• Current Message Switching System (MSS) and FAX Exchange system started operation in March 1996. They, especially MSS, are now nearing the limits in handling data volume and processing load.

• FTP servers have still enough capacity to expand the satellite data exchange.

• Japan Meteorological Agency (JMA) is to replace them by new ones in October 2005 in consideration of expansion and improvement of information exchange.

FTP traffic

GTS links

Message Switching System

FAX ExchangeSystem

FTP Servers

Message & Fax traffic

9-2. Concept design of the new MSS at RTH Tokyo9-2. Concept design of the new MSS at RTH Tokyo

Message Switching System

Intranet systems

NWP system

MSS Functions + Message and FAX exchanges by both socket and so-called batched ftp through GTS + File exchange by ftp through GTS + Collection of observational data by e-mail via the Internet

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

BUFRencode & decode

WMO monitoringShared disk

　　GTSGTS cluster control

InternInternetet

10. 10. JMA Internet ConnectionJMA Internet Connection

DMZLoad Balancer

FTP ServersPublic Servers

JMAIntra-net

ISP #1

Router Controllers

Firewalls

Packet Shapers

20Mbps

Internet

ISP #2

8MbpsMulti-homedconnectionsfor reliability

Thank You For Your AttentionThank You For Your Attention

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