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RMDCN within RA VI – status and perspectives
RMDCN within RA VI
- status and perspectives Matteo Dell’Acqua
ECMWF
[email protected]
CBS/ET-IMTN, 20-23 June 2001
MD - 1 -
RMDCN within RA VI – status and perspectives
Contents
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Background
RMDCN configuration
Network performance and reliability
Benefits and Developments
Future
CBS/ET-IMTN, 20-23 June 2001
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RMDCN within RA VI – status and perspectives
Background
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RMDCN Steering Group was established in 1994
ITT was issued in March 1998
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Equant was selected as the provider for the RMDCN
Contract was signed in December 1998
Service Commencement Date was 15 March 2000
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Contract runs for 5 or 8 years
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RMDCN within RA VI – status and perspectives
The Network
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Virtual Private Network based on Frame Relay PVCs
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TCP/IP is used as a transport protocol
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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 endpoints
No limit to the number of Sites that can be connected
No limit to the number of PVCs that can be established
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
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RMDCN within RA VI – status and perspectives
Initial Deployment - membership
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Deadline to be included was 1 April 1999
Larger than anticipated, 31 countries in total
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All 17 ECMWF Member States
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3 ECMWF Co-operating States
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Austria, Belgium, Denmark, Finland, France, Germany, Great Britain, Greece,
Ireland, Italy, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and
Turkey
Hungary, Iceland and Slovenia
11 Region VI countries outside ECMWF
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Bulgaria, Czech Republic, Former Yugoslav Republic of Macedonia, Jordan,
Latvia, Lebanon, Lithuania, Poland, Romania, Slovakia and the Syrian Arab
Republic
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RMDCN within RA VI – status and perspectives
RMDCN Configuration - 1
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Today, 32 countries + ECMWF are connected to RMDCN
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Syria
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Regulatory issues are being resolved
Russia
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Estonia was connected in December 1999
Poland was connected in February 2000
Croatia was connected in June 2000
Connection to UK Met Office
RMDCN Accession Agreement has been signed by Russia
Eumetsat
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Connections to ECMWF and DWD by RMDCN circuits
Awaiting the approval of Eumetsat council
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RMDCN within RA VI – status and perspectives
RMDCN Configuration - 2
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RMDCN within RA VI – status and perspectives
Reliability and Performance
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Since 15 March RMDCN has been used for operational
communications
Network very stable
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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
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EIR mechanism works very well and provides most PVCs with
more bandwidth than requested
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RMDCN within RA VI – status and perspectives
Service Availability
RMDCN PVCs w ith Availability < 99.5%
9
8
7
6
5
4
3
2
1
0
January
February
March
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April
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RMDCN within RA VI – status and perspectives
RMDCN repair time
Equant Faults
February
March
April
hr
s
>
4
<4
s
hr
2<
1<
hr
s
1h
<2
r
8
7
6
5
4
3
2
1
0
<
Number of Faults
January
Time to restore the service
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RMDCN within RA VI – status and perspectives
RMDCN performance
ECMWF - NORWAY RMDCN Traffic (2 mn samples)
14 June 2001
kilobits/sec
160
120
80
40
0
00
0:
00
2:
00
4:
00
6:
00
8:
0
:0
0
1
OUT
0
:0
2
1
IN
0
:0
4
1
0
:0
6
1
0
:0
8
1
0
:0
0
2
0
:0
2
2
CIR 96kb/s
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RMDCN within RA VI – status and perspectives
Benefits - 1
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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
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New connections and changes can be easily introduced
Network is monitored by ECMWF on a 24h basis
Costs saving
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RMDCN within RA VI – status and perspectives
Benefits - 2
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One point of contact for the RMDCN membership
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uniformity
RMDCN Operations Committee
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Co-ordination between all RMDCN participants
Network performance and reliability
Members are
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All RTHs participating, 2 NMCs participating, WMO Secretariat and ECMWF
RMDCN Web Site
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Set up by ECMWF to disseminate information on the project to the
participating countries
RDT to diagnose network problems before opening a TT
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RMDCN within RA VI – status and perspectives
RMDCN developments
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New potential members
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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.
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RMDCN within RA VI – status and perspectives
Future - 1
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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
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RMDCN within RA VI – status and perspectives
Future - 2
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An all-IP solution
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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
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