Status of the Global Telecommunication System connected

with RTH Tokyo

Japan Meteorological AgencyPresented by Masahiro Kazumori

Eighth Meeting on Asia-Pacific Satellite Data Exchange and Utilization (APSDEU-8)

(Montréal, Canada, 10 to 12 October 2007)

1. Current status of the GTS -MTN-

Exeter

Sofia

Network II

Melbourne

Buenos Aires

TokyoBeijing

Nairobi

Washington

2007

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 the gateways interconnecting Networks I and II

As one of the RTHs on the MTN….

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

Vientiane

Baghdad

Doha

Kuwait

Bahrain

Dhaka

Yangon

Kathmandu

Kabul

Karachi

Colombo

Male

Hanoi

Phnom Penh

PyongYangAshgabad

Macao

64K

Dushanbe

Almaty

NI

NI

NI

Seoul

NI

NI

64K

9.6-26.4K (V.34)

14.4-28.8K (V.34)

64K64K

50

50

50

50

200

64K

64K

100

75

1200

50

100

9.6K

Offenbach

Offenbach

CairoAlgiers

Moscow

Kuala Lumpur

Tashkent

Novosibirsk

Khabarovsk

Bangkok

F/R CIR<16/16K>

F/R CIR<16/16K>

Washington

NI

NI

19.2-24K(V.34)

24-19.2K (V.34)

19.2-24K (V.34)

Regional Meteorological Telecommunication Network for Region II (Asia)Current status as of 25 September 2007

Bishkek

64K

Singapore

RTH in Region II

NMC in Region II

Centre in other region

MTN circuitRegional circuitInterregional circuitAdditional circuit

Non-IP linkIP linkInternet E-mail transmission

NI No implementation

Tehran

Sanaa200

Hong Kong

Moscow

NI

F/R CIR<32/32K>

Tokyo

IMTN-MDCN CIR<32/768K>

Manila

Internet

Jeddah

Muscat

64K

64K

64K

Washington

ISDN 128K

28.8-9.6K (V.34)via Moscow 64 k

64K

64K

Thimpu

New Delhi

NI

768K

64K

2.4K

75

64K

via Moscow

64K

100

Ulaanbaatar14.4K

Abu-Dhabi

1200

64K

9.6-26.4K (V.34)

9.6-26.4K (V.34)

Melbourne

Melbourne

IMTN-MDCNCIR<16/32K>

32K

CMAPCVSAT

64K

75

CMAPCVSAT

CMAPCVSAT

512K

MPLS

IMTN MDCNMPLS

IMTN MDCNMPLS

IMTN MDCNMPLS

IMTN MDCNMPLS

IMTN MDCNMPLS

MPLS

Internet

Internet Beijing

2M

2M128K

1M

2M

1M

128K

512K

2M

2M128K

512K

2M

MPLS

2M

128K

MPLS

2M

Internet

Internet

Internet

Internet

Internet

F/R CIR<16/16K>

F/R CIR<16/16K>

F/R CIR<16/16K>

F/R CIR<16/16K>

Internet

Internet

Internet

Internet

Internet

EUMETSAT

MPLS 2M2M

Toulouse

Internet

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

64 kbps

Dedicated line connections

BT FR Network

(Cloud I)

1.5Mbps

256kbps

1.5Mbps

Improved MTN (Two Seamless Networks)

1Mbps

2 Mbps

Hong Kong Bangko

k

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

ManilaKDDI

FR Network

CATCATFR FR

NetworkNetwork

HKTHKTFR FR

NetworkNetwork

DACOMDACOMFR FR

NetworkNetwork

64kbpsPLDTPLDT

FR FR NetworkNetwork

128kbps

Regional circuits

4. Traffic status of the Tokyo-Washington link

Tokyo to Washington (CIR=32Kbps) (19 September 2007)

0

0.5

1

1.5

2

2.5

3

3.5

4

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

FAXBINA/N

26 Mbytes/day

50% of CIR

CIR=32kbpsCIR=768kbps

Tokyo FR Washington1.5Mbps

1.5Mbps

Washington to Tokyo (CIR=768Kbps) (19 September 2007)

0

10

20

30

40

50

60

0 3 6 9 12 15 18 21 [UTC]

[MByte/ 20min]

SSMIAMSUFAXBINA/N

847 Mbytes/day

50% of CIR

Melbourne to Tokyo (CIR=32Kbps) (19 September 2007)

0

1

2

3

4

5

6

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

ATOVSFAXBINA/N

5. Traffic status of the Tokyo-Melbourne linkCIR=16kbps

CIR=32kbps

Tokyo FR Melbourne256kbps1.5Mbps

Tokyo to Melbourne (CIR=16Kbps) (19 September 2007)

0

1

2

3

4

5

6

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

ATOVSFAXBINA/N

179 Mbytes/day

100% of CIR

Melbourne to Tokyo (CIR=32Kbps) (19 September 2007)

0

1

2

3

4

5

6

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

ATOVSFAXBINA/N

100% of CIR

89 Mbytes/day

6. Traffic status of the Tokyo-Beijing link

Tokyo to Beijing (MPLS=1Mbps) (19 September 2007)

0

5

10

15

20

25

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

ATOVSAMSUFAXBINA/N

Tokyo MPLS

Beijing2 Mbps1 Mbps

Beijing to Tokyo (MPLS=2Mbps) (19 September 2007)

0

1

2

3

4

5

6

7

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

ATOVSFengYungFAXBINA/N

333 Mbytes/day

147 Mbytes/day

7. Traffic status of the Tokyo-Seoul link

Tokyo to Seoul (CIR=16Kbps) (19 September 2007)

0

1

2

3

4

5

6

7

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]ATOVSFAXBINA/N

CIR=16kbpsCIR=16kbps

Tokyo FR Seoul

64kbps192kbps

FR

Seoul to Tokyo (CIR=16Kbps) (19 September 2007)

0

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

BINA/N

100% of CIR

157 Mbytes/day

Seoul to Tokyo (CIR=16Kbps) (19 September 2007)

0

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

BINA/N

1.5 Mbytes/day

8. Traffic status of the Tokyo-Hong Kong link

Hong Kong to Tokyo (CIR=16Kbps) (19 September 2007)

0

0.005

0.01

0.015

0.02

0.025

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

BIN

A/N

Tokyo FR Hong Kong

64kbps192kbps

FR

CIR=16kbpsCIR=16kbps

0.48 Mbytes/day

Tokyo to Hong Kong (CIR=16Kbps) (19 September 2007)

0

2

4

6

8

10

12

0 3 6 9 12 15 18 21 [UTC]

[MByte/20min]

SSMIBINA/N

212 Mbytes/day

64kbps line

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

BUFRencode & decode

WMO monitoringShared disk

　　 GTS GTS linkslinks

cluster control

InternInternetet

9. 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.

10. 10. JMA Internet ConnectionJMA Internet Connection

DMZLoad Balancer

Public Servers

JMAIntra-net

ISP #1

Router Controllers

Firewalls

Packet Shapers

20Mbps

Internet

ISP #2

20MbpsMulti-homedconnectionsfor reliability

FTP Servers

• Multi-homed connections to Internet with two dedicated links since 2001

• Two 20 Mbps links in operation: one since February 2005, the other since March 2006

2007

2006

Thank you Thank you ffor attentionor attention