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RMDCN Technical Solution RMDCN Workshop, 18-20 Jan 99ECMWF/TB-1 RMDCN Technical Solution Tony Bakker WAN Group Leader, Network Section ECMWF.

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Presentation on theme: "RMDCN Technical Solution RMDCN Workshop, 18-20 Jan 99ECMWF/TB-1 RMDCN Technical Solution Tony Bakker WAN Group Leader, Network Section ECMWF."— Presentation transcript:

1 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-1 RMDCN Technical Solution Tony Bakker WAN Group Leader, Network Section ECMWF

2 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-2 Agenda (1) Background & Requirements EQUANT Solution –Access Frame Relay X25 access –X25-Frame Relay Gateway

3 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-3 Agenda (2) Backup options –ISDN/PSTN Dialup –Mission Critical environment TCP/IP Issues Prioritisation Network Monitoring

4 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-4 Background (1) Jan 1993: Working group on Planning and Implementation of the WWW in Region VI: –identified the necessity for GTS reorganization Sep 1993: Subgroup on regional aspects of GTS –first proposal for modernisation of RMTN RMDCN Steering Group established RFI/RFQ for MDN

5 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-5 Background (2) 1997: Steering group recommendation: –A MDN provides a cost effective way for providing the requirements for an RMDCN –Requested ECMWF to lead and co-ordinate the procurement, implementation and operational phase for all countries –establish a Contract Advisory Committee Jun 1997: ECMWF Council accepts timetable for RMDCN project

6 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-6 Background (3) Nov 1997: RMDCN Contract Advisory Committee and ECMWF –start preperation of ITT Documents Apr 1998: ITT Dec ECMWF Council approves RMDCN Contract with EQUANT

7 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-7

8 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-8 ECNET The ECMWF external telecommunications network

9 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-9 Requirements combine the two networks –RAVI GTS & ECMWF cost savings technological improvements fully managed network - uniform service level high availability prioritisation of traffic multi-protocol (IP, X.25, DECnet)

10 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-10 ECMWF - Dissemination of products (to Member States) - Observations (from Member States) - Interactive sessions - data transfers to/from Member States GTS - Observations - Forecast data - low priority messages - other data

11 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-11 EQUANT Solution (1) Frame Relay Access Service complemented by X25 Access Service create a Virtual Private Network LAN Access Service –fully managed CISCO router service Management of Access Line –liaise with PTT (line order, fault reports, etc)

12 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-12 EQUANT Solution (2) X25 - Frame Relay Gateway TCP/IP as transport protocol –irrespective of access method –X25 encapsulated (XOT)

13 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-13 SITA/EQUANT POP LAN Access router Leased line Virtual Circuit KEY EQUANT Global Network Global Network EQUANT Solution

14 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-14 EQUANT Global Network Access Line LAN X25 switch MSS CPE POP Access

15 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-15 LAN X25 switch MSS POP CPE LAN X25 switch MSS CPE POP EQUANT Global Network FR pvc Frame Relay Access Service

16 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-16 POP Access Line FR CPE XOT TCP/IP pvc X25 TCP/IP POP Equant Global Network Frame Relay Access Service

17 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-17 GW POP LAN X25 switch MSS POP CPE LAN X25 switch MSS CPE POP EQUANT Global Network Frame Relay X25 pvc svc X25 Access Service

18 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-18 POP Access Line X25 CPE XOT TCP/IP svc X25 TCP/IP POP EQUANT Global Network X25 Access Service GW POP CPE FR X25

19 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-19 X25-Frame Relay Gateway communication between Frame Relay and X25 connected Sites configuration –Special purpose CISCO routers –two different locations within the EQUANT RMDCN VPN –fully managed by EQUANT

20 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-20 Backup options ISDN/PSTN backup –box before CPE serial interface Mission Critical –Dual Access Line –Dual CPE –CISCO HSRP –shadow PVC

21 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-21 ISDN Dial Backup EQUANT Global Network Access Line CPE POP X M M

22 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-22 Mission Critical EQUANT Global Network CPE POP X MM CPE POP MM HSRP Host POP CPE

23 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-23 TCP/IP Issues Public IP Network Addresses –LAN interface –X25 interface EQUANT can provide IP Network Address Range if necessary IP routing options –Static routes –OSPF with filtering

24 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-24 Prioritisation Standard CISCO options –custom queuing –priority queues –weighted fair queueing works on output buffer of PVC preference for custom queuing –allocate amount of buffer to traffic pattern based on src-dest-port (IP level)

25 RMDCN Technical Solution RMDCN Workshop, Jan 99ECMWF/TB-25 Network Monitoring EQUANT tools: –SITAVISION: VPN view HP Openview add-on Allows to monitor all RMDCN CPE interfaces –TTVISION: Trouble Ticket ECMWF will monitor the network and report regularly to RA VI via the RMDCN CAC and the RMDCN Operations Committee (ROC)


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