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Slide 1 RMDCN Network Architecture 1 Vienna, RMDCN Steering Group 4-6 June 2008 Remy Giraud ECMWF.

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Presentation on theme: "Slide 1 RMDCN Network Architecture 1 Vienna, RMDCN Steering Group 4-6 June 2008 Remy Giraud ECMWF."— Presentation transcript:

1 Slide 1 RMDCN Network Architecture 1 Vienna, RMDCN Steering Group 4-6 June 2008 Remy Giraud ECMWF

2 Slide 2 RMDCN Network Architecture 2 Standard Service Elements Bandwidth for each User Site; User Site-specific service and traffic management through COS mechanisms Service Levels depending on the Service Type selected by User Sites; Secured VPN provided through Multi Protocol Label Switching (MPLS) technology; Access leased line including its provisioning and monitoring; Regular reporting on the VPN performance (Quality of Service indicators); Network Management and Fault management for all Service elements, all provided on a 7 24 365 basis. Router Management (PE and CE) – dedicated VPN Owner

3 Slide 3 RMDCN Network Architecture 3 RMDCN Service Elements Connection to the Network -In general, doubling of Frame Relay access speed – IP BANDWIDTH -Speed Access Line - nearest available -Direct (Leased Line, Ethernet) CE – PE or Frame Relay PVC between CE and PE Gold Service Type -Class of Service Backup -Enhanced Resilience: NAS ISDN Backup ISDN Speed limitation (OBS support) -Mission Critical Setup

4 Slide 4 RMDCN Network Architecture 4 MPLS – Strengths and Weaknesses Robust Technology Simpler network management: - Native any to any connectivity - Flexible use of available bandwidth - Simplify the engineering required for site interconnection - Upgradeability Allows to benefit from MPLS developments: - Diversity of access methods (xDSL, Internet, LL…) - Availability of a large panel of access technologies and bandwidths - Built-in management of prioritization mechanism with IP and MPLS Cost improvement on global recurring costs More efficient backup solution better level of resilience MPLS corresponds to market network provider core strategy Traffic partitioning more difficult to implement Site-to-site bandwidth guarantees are difficult to achieve Costs are higher for smaller sites (Costs redistribution mechanism)

5 Slide 5 RMDCN Network Architecture 5 Access Methods - dedicated Access Technologies -Native IP – Direct access (LL) -Frame Relay access, Ethernet access type IP Bandwidth -A unique service on each type of dedicated access -A flexible parameter for the site sizing -From 64 kbps up to 50 Mbps Flexible parameter up to the LL bandwidth IP Bandwidth LL Bandwidth

6 Slide 6 RMDCN Network Architecture 6 What define an access to the MPLS Cloud ? Access Line IP Bandwidth Standards OBS Service Type -GOLD – Data Classes Of Service Standard COS profiles 60% - D1, 30% - D2, 10% - D3 66% - D1, 33% - D2 100% - D2 -SILVER – Unique COS 100% of the IP bandwidth Approved option for the traffic allocation: D1: 75% - ECMWF dissemination and GTS D2: 20% - Aladin/RETIM/LACE/coupling File Transmission D3: 5% - Other (Default)

7 Slide 7 RMDCN Network Architecture 7 COS Management Data classes D1, D2 and D3 -CB-WFQ for all classes (relative weight = relative priority in case of congestion) -No layer 3 shaping: Each data class can use up to the IP bandwidth -No more Frame Relay facilities: Traffic always limited to the IP bandwidth CB-WFQ: Class Based – Weighted Fair Queuing

8 Slide 8 RMDCN Network Architecture 8 APPLICATION CLASSIFICATION RULES From the CE to the Backbone. -OBS has configured the Networks application classification rules that define how the CE router manages the application traffic classification (ie prioritization) for the outgoing traffic. Application traffic is assigned to the corresponding COS class (D1, D2 or D3). Unclassified application traffic will by default be assigned to the by default COS class. From the Network to the CE. -In this direction, the Network takes precedence over the sender User Site (using COS) and automatically classifies the received data in the same COS. If the COS used is not configured on the access, then the received traffic is classified as unknown type of traffic and put in the by default COS configured on the access. The per-COS traffic assignment rules correspond to how traffic flow is mapped to a COS, and is similar to specifying an access control list. If any incoming traffic is received that does not match any of the provided rules, this traffic is sent into the lower level class (might be D2 or D3).


10 Slide 10 RMDCN Network Architecture 10 NAS Back-up Resiliency ISDN PSTN OBS Pop (PE) Equant NAS Customer VPN Equant IP VPN network Warm standby option dual CPE Warm standby router Customer site resiliency ProxyRadius Authentication Hub site: 1 access supporting Private Dial traffic Traffic to the VPN CE – LNS router ECMWF

11 Slide 11 RMDCN Network Architecture 11 Dual Connection – Mission Critical Resiliency OBS IP VPN Network Customer Site CE router Equant Pop Dual CPE Primary Access Secondary Access level of resiliency

12 Slide 12 RMDCN Network Architecture 12 Traffic Partitioning MPLS IPVPN: -No PVC – No CIR – No guaranteed throughput between source destination -Any-to-any connectivity To limit the any-to-any exposure Access Control Lists can be defined on local routers

13 Slide 13 RMDCN Network Architecture 13 Routing issues Between CE router and NAS router: HSRP Mission Critical Setup: 2 CE routers - HSRP LAN Route redistribution -BGP -EIGRP -OSPF -RIP v1, RIP v2 -Static

14 Slide 14 RMDCN Network Architecture 14 Background – The SRF2 Document Service Request Form 2 -Used by OBS to Collect the technical information for each RMDCN site Internally build the CE routers configurations -ECMWF is the entry point Complete the SRF2 documents on behalf of the RMDCN sites

15 Slide 15 RMDCN Network Architecture 15 The pre-filled OBS SRF2 document -One pre-filled SRF2 by OBS per RMDCN IPVPN site -The focus is on the required technical details pages Background – The SRF2 Document

16 Slide 16 RMDCN Network Architecture 16 Service Metrics and Help Desk SLA 99.9% (100% for Mission Critical sites) Now Site Availability (used to be PVC availability) Pro-active monitoring -24 User Sites -Only English language -OBS Help Desk in New Delhi Re-active monitoring -18 User Sites -Local Language

17 Slide 17 RMDCN Network Architecture 17 Country/Site Access Speed IPVPN Port Speed ResiliencyCoS Load Balancing NAS Backup Speed ECMWF Member States Austria2M1MenhancedGoldNO512 Belgium2M enhancedGoldNO384 Denmark2M mission criticalGoldNON/A Finland2M768enhancedGoldNO256 France4M3Mmission criticalGoldNON/A Germany2M mission criticalGoldNON/A Greece1M768enhancedGoldNO384 Ireland1M enhancedGoldNO512 Italy2M mission criticalGoldNON/A Luxembourg *2M768enhancedGoldNON/A Netherlands2M768enhancedGoldNO384 Norway2M enhancedGoldNO1M Portugal768 enhancedGoldNO384 Spain2M enhancedGoldNO512 Sweden4M3Mmission criticalGoldNON/A Switzerland2M768enhancedGoldNO384 Turkey **768 extra enhancedGoldNON/A United Kingdom2M mission criticalGoldNON/A ECMWF50M mission criticalGoldYESN/A

18 Slide 18 RMDCN Network Architecture 18 ECMWF Co-operating States Croatia512 enhancedGoldNO256 Czech Republic2M enhancedGoldNO1M Estonia64 enhancedSilverNO64 EUMETSAT2M mission criticalGoldNON/A Hungary1M enhancedGoldNO256 Iceland128 enhancedGoldNO128 Lithuania128 enhancedSilverNO128 Romania2M256enhancedGoldNO128 Serbia512 enhancedGoldNO256 Slovenia256 enhancedGoldNO256 Other RMDCN Member States Bulgaria512 enhancedGoldNO128 China2M mission criticalGoldNON/A India128 enhancedGoldNO128 Japan1M mission criticalGoldYESN/A Jordan128 enhancedGoldNO128 Latvia128 enhancedGoldNO128 Lebanon128 enhancedGoldNO128 FYR Macedonia128 enhancedGoldNO128 Poland128 enhancedGoldNO128 Russian Federation512 mission criticalGoldNON/A Saudi Arabia *512128enhancedSilverNON/A Slovakia256 enhancedSilverNO128 United Arab Emirates128 enhancedGoldNO64

19 Slide 19 RMDCN Network Architecture 19 Questions?

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