Overview of the Improved MTN project Geoff Molloy

Overview of the Improved MTN project Geoff Molloy Communications and Computing Branch Bureau of Meteorology Australia

Overview of the Improved MTN project Background • The idea was partly based on two existing networks: 1. RMDCN. 2. British Telecom (BT) Frame Relay links between Melbourne-Singapore-Jakarta

Overview of the Improved MTN project The RMDCN • Virtual Private Network based on Frame Relay PVCs – Guaranteed bandwidth ( CIR ) – Ability to take advantage of unused network capacity ( EIR ) – PVC costs are in function of the CIR and the location of the end-points – No limit to the number of Sites that can be connected – No limit to the number of PVCs that can be established • TCP/IP is used as a transport protocol – Fully managed Cisco routers • Connection via a PTT access line to the in-country POP • Backup service ( ISDN, PSTN, dual access line )

Overview of the Improved MTN project Phases • implementation of the Improved MTN project should be a progression. In its first stage (Phase I), there would be a mix of “clouds” and existing point-topoint links. • Phase I should therefore evolve quickly towards Phase II in which all the MTN links would be provided via a small number of “clouds” or Managed networks – e. g. frame relay.

Overview of the Improved MTN project Tokyo 64 X. 25 0. 2 New Delhi Bangkok Washington Manila Fax Guam 19. 2 X. 25 56 X. 25 9. 6 X. 25 Honolulu 1. 2 64 TCP/IP 2. 4 X. 25 Brunei Bracknell Kuala Lumpur 1. 2 NO ASMC Singapore FR 64 (CIR: 8) TCP/IP RTH Centre in other region MTN circuit AFTN+GTS 9. 6 X. 25 Pago-Pago FR 64 (CIR: 4) TCP/IP (+ X. 25) Jakarta FR 64 (CIR-16) TCP/IP 4. 8 TCP/IP RSMC Darwin Papeete RSMC Nadi Port Vila 4. 8 X. 25 9. 6 X. 25 Melbourne CIR Committed Information Rate (Frame Relay links) 9. 6 TCP/IP Fax FR 512 (CIR: 128) NO Not operational Internet 28. 8* NO Apia Honiara Port Moresby Regional circuit Interregional circuit AFTN+GTS 9. 6 X. 25 2. 4 X. 25 FR 64 (CIR: 8) TCP/IP (+ X. 25) NMC Micronesia Noume a Fax Internet 256* Wellington Additional circuit Internet 256* radio broadcast Peak speed through Internet Regional Meteorological Telecommunication Network for Region V (South-West Pacific) point-to-point circuits implementation (transmission speed in Kbit/s) 31. VIII. 2000

Overview of the Improved MTN project F i New Delhi g u r Bracknell e Moscow 6 . Prague 2 RA VI RMDCN. Beijing Tokyo 2 Sofia : Washington Offenbach Cairo Toulouse T h Jeddah Nairobi e Network B Network A I M Dakar T Algiers N , Melbourne Buenos Aires P MTN PVC through Network h Inter-Regional PVC through Network a s Existing point to point links e Existing network Access line to Network Services I : RTH - MTN E x Mixed use of Data Communication Network Services and point-to-point circuits Gateway RTH a m p Brasilia

Overview of the Improved MTN project New Delhi Moscow Beijing Bracknell Network D Prague RA VI RMDCN Jeddah Tokyo Sofia Washington Offenbach Cairo Toulouse Algiers Network B Network A Network C Nairobi Melbourne Dakar Buenos Aires Brasilia Existing Network Services New possible Network Services Network-to Network Interconnection Access line to Network Services RTH- MTN Gateway RTH Figure 6. 2. 1: The IMTN, Phase II: Example of possible implementation of the MTN - use of Data Communication Network

Overview of the Improved MTN project Why a managed Network? • Potential advantages include: 1. Cost-effectiveness compared to dedicated leased lines. Also economy of scale likely to result in significant discounts. 2. Burst capability – ideal for timely receipt of large volume of data for a short period of the day (eg model data) 3. Ability to increase link capacity easily and quickly – no need to order new line. 4. Ability to additional links quickly and cheaply. 5. High availability – option to have fully managed service and ISDN backup

Overview of the Improved MTN project MOU key to flexibility • Drafting a Memorandum of Understanding (Mo. U) among the centres – · Responsibilities of each centre; – · Method of procurement of the service; – · Funding of the various stages; – · On-going coordination and management of the relationship with the supplier; – · Procedure for adding another centre to the cloud, etc.

FRAME RELAY SCHEMATIC ( INFONET by Telstra) Dorval, Canada 8 K 12 Washington NWS 256 K 16 K Tokyo, Japan 32 K <-1 USA 6 K 25 6 K/ 8 k-> NESDIS 8 K 12 32 K 256 K 64 K k- /8 6 K 1 8 K 16 K /8 6 K <-1 8 K k-> Bracknell UK 64 K 8 K Pretoria, South Africa Melbourne Australia K 64 128 K Brasilia Brazil Buenos Aires Argentina

Hong Kong HKT Frame Relay NNI Gateway Tokyo Local Line FR Port Japan KDDI Frame Relay NNI Gateway CAT Frame Relay Bangkok FR Port U. S. A. NNI Gateway DACOM Frame Relay Seoul Washington INFONET Frame Relay FR Port U. K. Bracknell IMTN Network B FR Port Australia Melbourne

Overview of the Improved MTN project Melbourne – Tokyo – Washington – Bracknell network • Quotes were sought from leading providers for this network – Worldcomm, Sprint, BT. Also a quote was sought from Equant under the RMDCN contract. • At this time (September 2002) at appears that this network will be a service from BT for 3 years • Unsymetric PVCs