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CBS/ET-IMTN, 20-23 June 2001 MD - 1 -
RMDCN within RA VI – status and perspectives
RMDCN within RA VI- status and perspectives -
Matteo Dell’Acqua
ECMWF
CBS/ET-IMTN, 20-23 June 2001 MD - 2 -
RMDCN within RA VI – status and perspectives
Contents
Background RMDCN configuration Network performance and reliability Benefits and Developments Future
CBS/ET-IMTN, 20-23 June 2001 MD - 3 -
RMDCN within RA VI – status and perspectives
Background
RMDCN Steering Group was established in 1994 ITT was issued in March 1998
Equant was selected as the provider for the RMDCN Contract was signed in December 1998 Service Commencement Date was 15 March 2000
Contract runs for 5 or 8 years
CBS/ET-IMTN, 20-23 June 2001 MD - 4 -
RMDCN within RA VI – status and perspectives
The Network
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 )
CBS/ET-IMTN, 20-23 June 2001 MD - 5 -
RMDCN within RA VI – status and perspectives
Initial Deployment - membership
Deadline to be included was 1 April 1999 Larger than anticipated, 31 countries in total
All 17 ECMWF Member States Austria, Belgium, Denmark, Finland, France, Germany, Great Britain, Greece,
Ireland, Italy, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and Turkey
3 ECMWF Co-operating States Hungary, Iceland and Slovenia
11 Region VI countries outside ECMWF Bulgaria, Czech Republic, Former Yugoslav Republic of Macedonia, Jordan,
Latvia, Lebanon, Lithuania, Poland, Romania, Slovakia and the Syrian Arab Republic
CBS/ET-IMTN, 20-23 June 2001 MD - 6 -
RMDCN within RA VI – status and perspectives
RMDCN Configuration - 1 Today, 32 countries + ECMWF are connected to RMDCN
Estonia was connected in December 1999 Poland was connected in February 2000 Croatia was connected in June 2000
Syria Regulatory issues are being resolved
Russia Connection to UK Met Office RMDCN Accession Agreement has been signed by Russia
Eumetsat Connections to ECMWF and DWD by RMDCN circuits Awaiting the approval of Eumetsat council
CBS/ET-IMTN, 20-23 June 2001 MD - 7 -
RMDCN within RA VI – status and perspectives
RMDCN Configuration - 2
CBS/ET-IMTN, 20-23 June 2001 MD - 8 -
RMDCN within RA VI – status and perspectives
Reliability and Performance
Since 15 March RMDCN has been used for operational communications
Network very stable Almost all PVCs get more than 99.5% availability Number of problems reported to the local Help Desk is stable
Bandwidth delivered has been very good EIR mechanism works very well and provides most PVCs with
more bandwidth than requested
CBS/ET-IMTN, 20-23 June 2001 MD - 9 -
RMDCN within RA VI – status and perspectives
Service Availability
RMDCN PVCs with Availability < 99.5%
0
1
2
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4
5
6
7
8
9
January February March April
CBS/ET-IMTN, 20-23 June 2001 MD - 10 -
RMDCN within RA VI – status and perspectives
RMDCN repair timeEquant Faults
012345678
Time to restore the service
Nu
mb
er o
f F
ault
s
January February March April
CBS/ET-IMTN, 20-23 June 2001 MD - 11 -
RMDCN within RA VI – status and perspectives
RMDCN performanceECMWF - NORWAY RMDCN Traffic (2 mn samples)
14 June 2001
0
40
80
120
160
0:00
2:00
4:00
6:00
8:00
10:0
012
:00
14:0
016
:00
18:0
020
:00
22:0
0
kilo
bit
s/se
c
OUT IN CIR 96kb/s
CBS/ET-IMTN, 20-23 June 2001 MD - 12 -
RMDCN within RA VI – status and perspectives
Benefits - 1
Upgrade of the GTS links and changes in the GTS configuration
Acceleration in the migration from X.25 to IP A more flexible modernized network
New connections and changes can be easily introduced Network is monitored by ECMWF on a 24h basis Costs saving
CBS/ET-IMTN, 20-23 June 2001 MD - 13 -
RMDCN within RA VI – status and perspectives
Benefits - 2
One point of contact for the RMDCN membership uniformity
RMDCN Operations Committee Co-ordination between all RMDCN participants Network performance and reliability Members are
All RTHs participating, 2 NMCs participating, WMO Secretariat and ECMWF
RMDCN Web Site Set up by ECMWF to disseminate information on the project to
the participating countries RDT to diagnose network problems before opening a TT
CBS/ET-IMTN, 20-23 June 2001 MD - 14 -
RMDCN within RA VI – status and perspectives
RMDCN developments
New potential members Countries are requesting pricing information to join the network
Some of the RTHs are considering to use the RMDCN for links to other GTS regions
Changes to the GTS architecture are likely to continue New requests for bandwidth increases, mostly based on
asymetric PVCs. New request for Mission Critical connection.
CBS/ET-IMTN, 20-23 June 2001 MD - 15 -
RMDCN within RA VI – status and perspectives
Future - 1
In response to the ITT, only Frame Relay solutions were offered
Large IP networks are being built by network suppliers for Extranet and intranet applications
Quality of service is becoming available for IP More and more fibre networks are being built New satellite communication networks are planned
CBS/ET-IMTN, 20-23 June 2001 MD - 16 -
RMDCN within RA VI – status and perspectives
Future - 2
An all-IP solution With higher link speed With features such as IP multi-casting With QOS to guarantee end-to-end traffic
Pilot an IP/VPN solution Investigate the use of Internet VPN for backup
