report on the improved rmtn project contents 1. background 2. status of progress of the improved...

Report Report oonn the Improved RMTN project the Improved RMTN project

Contents1. Background2. Status of progress of the improved RMTN 2.1 Implementation of circuits 2.2 Migration to TCP/IP 2.3 Seeking cost-effective connections 2.3.1 Frame Relay services 2.3.2 IP-VPN services 2.3.3 Internet links 2.4 Complementary systems 2.4.1 Satellite broadcasting 2.4.2 Internet server systems3. Prospect on foundations of the Improved RMTN 3.1 IMTN Network II (a core of the Improved RMTN) 3.2 Understanding of network service providers 3.3 Asian market of network services4. Suggestions in further improving Submitted By Hiroyuki Ichijo (Japan)

Rapporteur on the improved RMTN

Doc. 3.3 (2) Presentation versionRA II/ICM-GTS 2003 (Moscow, 8 to 10 September 2003)

1. Background

Strengthen the overall GTS capabilitieswith cost-effectiveness and technical trends Migration to

TCP/IPUse of managed

data network services

Feasibility study

Improved MTN project

Collaborative implementationby a small number ofmanaged networks

Improved RMTN project ideas1999

endorsed by RA II 12th session

• Implementation of several networks with appropriate groups• Step by step approach towards ultimate goal of collaborative implementation

2000

2003 Collaborative implementationof Networks I and II

Step by step implementationon bilateral basis

a core

2004

Practical discussion andcoordination by ET-IMTN • Administrative issues• Implementation plan by Networks I and II

2001

2002

Practical discussion and coordination by each group Training

Seminar

A possible configuration of the improved RMTN

Zone ofresponsibility of RTH Tokyo

Zone ofresponsibility ofRTH New Delhi

Zone ofresponsibility ofRTH Tashkent

Zone ofresponsibility of RTH Beijing

Zone ofresponsibility of RTH Bangkok

Zone ofresponsibility ofRTH Novosibirsk

Zone ofresponsibility ofRTH Khabarovsk

Zone ofresponsibility ofRTH Jeddah

Zone ofresponsibility ofRTH Tehran

Improved RMTNEastern part (Group

IIA) NetworkImproved RMTN

Southern part (Group IIB) Network

Improved RMTNWestern part (Group IIC)

Network

Improved RMTNNorthern part (Group IID) Network

Tokyo

Tehran

Khabarovsk

Tashkent Novosibirsk

Bangkok

Moscow

JeddahNew Delhi

Beijing

Improved MTN Network II

Offenbach

2. Status of progress of the improved RMTN

Objectives of the first stage:

1) Migration to TCP/IP for saving the both of costs and human resources allowing latitude in selecting a network service

2) Extrication from expensive leased circuits for saving recurrent costs obtaining flexible connectivity Seeking cost-effective alternatives to leased circuits, Frame Relay, IP-VPN … Use of the Internet is now being discussed by many

centres.

2.1 Implementation of circuits Regional plan : 78 circuits Implemented : 67 circuits Implementation rate : 86 % (as of Aug. 2003)

Progress of improvement in circuit speed in RA II

3833 32 28 28

21

22

18 18

159

5

310 11

1825

33

0%

25%

50%

75%

100%

Feb 1997 Aug 1999 Sep 2000 Jan 2002 Aug 2003 2005 (plan)

More than9600bps

2400 to 9600(inclusive)

less than2400bps

The numberof circuits

NMCs Baghdad, Kabul and Phnom Penh are isolated from the GTS. Low speed circuits are still more than half.

2.2 Migration to TCP/IP

Achievement rate : about 35% ( as of August 2003)

Estimation rate : over 50% by the end of 2005

Progress in migration to TCP/IP in RA II

0

10

20

30

40

50


Additional circuits

Interregional circuits

Regional circuits

MTN circuits

number of circuits

2.3 Seeking cost-effective connections

Bilateral basis FR : 6 circuitsCollaborative FR : 3 circuits (as of August 2003)

2.3.1 Frame Relay services

Growth in introducing of Frame Relay circuits in RA II

0

2

4

6

8

10

12

14


Additional circuits


Regional circuits

MTN circuits

number of circuits

Two approaches to establish Frame Relay links

Bilateral basis approach(improved RMTN Group IIA

strategy)

Collaborative approach (IMTN project)

Administrative view

Multi-end-contract# the traditional peer-to-peer method for GTS circuits# Easy to coordinate

One-stop-contract# a new collaborative framework among centres# Not easy to coordinate

Technical view

Network-to-Network Interconnection (NNI)

# Inter-connection of two providers / telecom carriers# Committed Information Rate (CIR) : Symmetric only

Seamless connection# connection through a network managed by a single provider# Committed Information Rate : Symmetric or Asymmetric

Bilateral basis approach (Strategy of the improved RMTN Group IIA)

InternationalTelecom.Carrier

X

NMHSA

InternationalTelecom.Carrier

Y

NMHSB

contractual boundarybetween X and Y

• Contract between A and X• Payment for the X portion to the

boundary

• Contract between B and Y• Payment for the Y portion to the

boundary

Bill

Payment

Bill

Payment

Tariff of Xin the localcurrency

Tariff of Yin the localcurrency

Traditional method : bilateral contract/billing

Frame RelayNetwork

X

Frame RelayNetwork

YNNI

Collaborative approach (IMTN project)New method : one-stop concept(a) one-stop contract/billing

NMHS A(Primary customer)

NMHS B(Secondary customer)

Customer A

• Contract between A and X• Payment for the total charge from A to X

Provider X

Bill

Payment

Customers B & C

Tariff of Xin a majorcurrency• In accordance with MoU

the payment is recovered from B and C

Network

supplied by

a single provider X

NMHS C(Secondary customer)

MoUamongcustomers

(b) one-stop contract & multi-end billing

• Contract between A and X• Individual bill and payment

based on charge rules agreed by customers

Provider X

Bill

Payment

Tariff of Xin a majorcurrency

• MoU includes charge rules

MoUamongcustomers

NMHS A(Primary customer)

NMHS B(Secondary customer)

Bill

Bill Payment

Payment

NMHS C(Secondary customer)

Network

supplied by

a single provider X

2.3.2 IP-VPN servicesThere is no VPN circuit in RA II.One of VPN services is IP-VPN which is different in backbone management from Internet VPN.

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

Closed

IP networkby a provider

CE PE

CE PE

CE

CE

IP IP Label IP Label

Core Router

Core RouterCore Router

PE

IP

VPN group

VPN group

IP-VPN with MPLS

IPsec VPN products add/remove the ESP for encryption and encapsulation and the AH for authentication to/from an IP packet.

ESP : Encapsulation Secure Payload AH : Authentication Header

InternetIPsec Product

ESP AH IP

VPN group

VPN group

IPsec Product

IP ESP AH

IP

IP

IPsec Product

Internet VPN with IPsec

2.3.3 Internet links

Current : 5 circuits (as of August 2003)

Estimation : 9 circuits by the end of 2005

Growth in GTS circuits through the Internet in RA II

0

2

4

6

8

10


Additional circuits


Regional circuits

MTN circuits

number of circuits

2.4 Complementary systems

• Being used for a complement of GTS point-to-point links and a backup source.

• PCVSAT (2-way) by China, TV-inform-Meteo by Russia, Data broadcast through World Space Satellite Digital Audio Broadcast by India, MDD by EUMETSAT, WAFS (ISCS, SADIS) and UKSF/WWW

2.4.1 Satellite broadcasting systems

Broadcast type DAB: Digital Audio Broadcasting DVB: Digital Video Broadcasting

2 way VSAT type

SADIS/UKSF (WAFS broadcast / WWW data by UK satellite Facility)

INTELSAT

VSAT 2.5m Antenna

Workstation

GTS

WMO MessageSwitching System

64KbpsLeased Line

Satellite UplinkFacilityin WhiteHill, UK WWW 64Kbps X25

19.2Kbps X25

9.6Kbps Async.

Satellite Broadcast Receiving Only System

SADIS 64Kbps X25

UK Met. Office, Bracknell

64KbpsBackup Line

Test Facilityin Poynton, UK

Digital ReceiveOnly Unit (DRO)

ISDN

INTELSAT

VSAT 2.5m Antenna

Workstation

GTSGTS

WMO MessageSwitching System

64KbpsLeased Line

Satellite UplinkFacilityin WhiteHill, UK WWW 64Kbps X25

19.2Kbps X25

9.6Kbps Async.

Satellite Broadcast Receiving Only System

SADIS 64Kbps X25

UK Met. Office, Bracknell

64KbpsBackup Line

Test Facilityin Poynton, UK

Digital ReceiveOnly Unit (DRO)

ISDNISDN

2.4.2 Internet server systems

• With improving Internet connectivity of Members, Internet data serving method is becoming one of convenient and promising complement systems.

• A number of RTHs/NMCs operate their own servers and provide WWW data.We must keep track of both of positive and negative aspects of the

Internet !

Heavy load

Hiddencost

Positive aspect : Good opportunities for innovation

EC site, Video on Demand, Network GameMusic & Movie streaming, On-line shopping

Home security

INTERNETINTERNET anytime, anywhere, anyone any medium, any contents

The Internet always leads IT innovation

Negative aspect : Security risks

INTERNETINTERNET

There are bad guys in the world

Target hostsTarget hosts

Step hosts with Step hosts with security holessecurity holes

Attack Attack triggertrigger

Simultaneous Simultaneous attacksattacks

Step mail Step mail servers with servers with security holessecurity holes

SpamSpam

Victims Victims

Feb. 1991

June 1997

Internet diffusion

INTERNEINTERNETT

Internet full connectivity

Not Internet but Bitnet

E-mail only (UUCP etc)

No connectivity

Internet full connectivity

Not Internet but Bitnet

E-mail only (UUCP etc)

No connectivity

3 Prospect on foundations of the Improved RMTN

• The IMTN project is now in the implementation stage and will be completed in 2004.

• The IMTN Network II is established as extension of RA VI RMDCN which is a well managed Frame Relay network under the contract between ECMWF and Equant.

• Beijing already has joined the RMDCN. New Delhi, Jeddah and Tokyo will join soon.

3.1 IMTN Network II (a core of the Improved RMTN)

Bracknell

Sofia

Network IINetwork II

Melbourne

Buenos Aires

TokyoBeijing

New Delhi

Nairobi

Cairo

Toulouse

Dakar

Algiers

MoscowWashington

Brasilia

Network INetwork I

Offenbach

Jeddah

Prague

3.2 Understanding of network service providers

• Find the right price

Cut-price with an excessive discount often means a trade-off in service quality. We must keep a balance between price and quality in our minds.

• Assess the quality

We should try to understand each provider’s specific characteristics in backbone network, reliability and availability, performance such as burst limits and round-trip delay, and support capabilities such as help desk services, monitoring and report procedures and local language support.

• Understand difficulties

* PTT monopoly often makes a network service less reliable and more expensive.

* In case of a bilateral connection, nothing goes well without technical compatibility and a contractual agreement between PTTs.

* In case of a seamless connection by a single provider, it is very hard to coordinate administrative issues on one-stop basis among individual NMHSs and the provider.

3.3 Asian market of network service providers

• Generally the Asian telecom market is inactive except for the Internet business since the recent recession. New investments by global network service providers have inclined to concentrate on potential markets such as China and India.

• Although each country’s PTT is trying to gradually phase out legacy facilities, its progress is slow in some countries of PTT monopoly. Such poor domestic infrastructure affects reliability and cost-effectiveness of international connections.

• Increasing the number of available providers in eastern Asia has ceased and then unbelievable discounting in late 1990s is coming to an end.

• In business use, the network trend is gradually moving from Frame Relay to VPN services. IP-VPN services are currently available domestically in developed countries and being available internationally among big cities in the world. The coverage of TCP/IP based services will expand on the worldwide level absorbing traditional telephone networks.

4. Suggestions in further improving

1) Acceleration of TCP/IP migration All of RMTN circuits in RA II should migrate to pure TCP/IP links with a first priority in the first step. Delay of implementation in one centre may extinguish the whole benefit.

Some NMCs have difficulties in TCP/IP migration. Their telecom systems are already obsolete and have no capability to handle the TCP/IP protocol suite. Lack of expertise and funds definitely obstructs replacement of their systems. Technical and financial support in the early stage of the transition will be effective for promotion of the migration. Related RTHs and WMO Secretariat should consider possible support.

2) Selecting an appropriate network service with a possible framework There are options in cost-effective network services (i.e. FR, IP-VPN).Regarding the contract aspect, in addition to a bilateral framework which is the current strategy, a one-stop collaboration is becoming an option (e.g. further extension of the IMTN Network II).

Since there are various differences in technical developments and administrative conditions from part to part in RA II, an appropriate network service and its contractual framework are not to be always the same.

Each group and/or part (an RTH and NMCs concerned) should examine and discuss their best solution. In other words, an appropriate network service with a possible contractual framework should be selected by each group/part.

3) Use of the Internet for a GTS circuit as the very end solution The use of the Internet is one of convenient solutions to upgrade the current GTS circuits, especially asynchronous low speed ones.But there are serious risks in security and performance guarantee, as well-known. At present, all centre should first challenge the ordinary approach to the best solution. If the ordinary approach would be very difficult, the Internet use should be considered. In case of GTS circuits through the Internet, introduce of VPN techniques is recommended according to “Guide on Virtual Private Networks (VPN) via the Internet between GTS centres” developed by OPAG-ISS.

4) Practical use of consulting and marketing companies It is desirable to use detailed survey reports provided by telecom consulting and marketing companies in identifying available and adequate data communication services and network providers for RMTN and also national networks.

5) Building up technical information to help NMCs facing difficulty The on-line information resources on the GTS are available on the WMO Web server. Although this site is very useful for all the GTS centres, there seems be still room for improvement and enhancement. WMO Secretariat should strengthen the on-line information resources on the GTS from the view to help small NMCs having no expertise in cooperation with voluntary experts. In this regard, here are some ideas from GTS colleagues:• to add easier contents aiming at a newcomer to telecom section, beginner’s dictionary and necessary extractions from textbooks;

• to increase trivial but necessary tips in the implementation collected from centres;

• to add the latest information on telecom marketing and network providers;

• to update contents timely;

• to build a virtual help desk to answer questions from NMCs and to prepare FAQ.

Current status of RMTN in RA II (as of August 25, 2003)

Vientiane

Ulaanbaatar

Baghdad

Doha

Kuwait

Bahrain

Dhaka

Yangon

Kathmandu

Kabul

Karachi

ColomboMale

Hanoi

Phnom Penh

PyongYang

Ashgabad

Macao

64K

14.4K

Dushanbe

Almaty

NI

NI

NI

NI

Seoul

NI

NI

NI

7.2-28.8K (V.34)

64K

9.6K

2.4K

9.6K

4.8K

64K

128K

7.2K

64K

50

50

50

50

50

64K

100

200

1200

1200

1200

2.4K

100

100

100

200

75

75

75

1200

75

50

100

75100

100

7575

9.6K

Melbourne

Offenbach

Offenbach

Cairo

Cairo

Algiers

Moscow

Kuala Lumpur

Tashkent

Novosibirsk Khabarovsk

Bangkok

Frame RelayCIR<16/16K>


Melbourne

Washington


NI

NI 9.6-28.8K (V.34)

9.6-19.2K (V.34)

19.2-24K (V.34)

Bishkek

64K

2.4K

Singapore

Internet

9.6K

RTH in Region II

NMC in Region II

Centre in other region

MTN circuitRegional circuitInterregional circuitAdditional circuit

Non-IP linkIP link

NI No implementation7.2-28.8K

(V.34)

Tehran

Sanaa200

Hong Kong

Moscow

NIFrame Relay

CIR<32/32K>

64K


Tokyo

Beijing


200

New Delhi



Manila


7.2-28.8K (V.34)

via Moscow

Internet

-32.5K (V.34)via Moscow

Jeddah

Internet Internet

Internet

Muscat

Emirates

Plans of RMTN in RA II for 2003-2005

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

NI

7.2-28.8K(V.34)

64K

9.6K

64K

9.6K

64K

128K

64K

50

50

64K100

200

1200

2.4K100

200

75

75

1200

75

50

100

75100

100

7575

9.6K

Melbourne

Offenbach

Offenbach

Cairo

Moscow

Kuala Lumpur

Tashkent

NovosibirskKhabarovsk

Bangkok



Melbourne


NI

NI9.6-28.8K (V.34)

9.6-19.2K (V.34)

19.2-24K (V.34)

Bishkek

64K

Singapore

9.6K

RTH in Region II

NMC in Region II

Centre in other region

MTN circuitRegional circuitInterregional circuitAdditional circuit

Non-IP linkIP link Plan

NI No implementation

7.2-28.8K(V.34)

Tehran

Sanaa200

Hong Kong

Moscow

NIFrame Relay

CIR<32/32K>


Tokyo

Beijing


200

New Delhi


Manila


7.2-28.8K(V.34)via Moscow

-32.5K(V.34)via Moscow



Internet

64K

64K

64K


Frame Relay

14.4-28.8K(V.34)

Internet

Internet InternetInternet

Internet Internet

Internet

Jeddah

Muscat

Emirates

Internet

75

50

Cairo

Algiers

64K


Washington

report on the improved rmtn project contents 1. background 2. status of progress of the improved...

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