RMDCN Network Architecture Vienna RMDCN Steering Group 4

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

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

RMDCN Service Elements l 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 l Gold Service Type - Class of Service l Backup - Enhanced Resilience: NAS ISDN Backup § ISDN Speed limitation (OBS support) - Mission Critical Setup RMDCN Network Architecture Slide 3 3

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 (x. DSL, 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 RMDCN Network Architecture Traffic partitioning more difficult to implement Site-to-site bandwidth guarantees are difficult to achieve Costs are higher for smaller sites (Costs redistribution mechanism) Slide 4 4

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

What define an access to the MPLS Cloud ? l Access Line l IP Bandwidth l Standards OBS Service Type - - GOLD – Data Classes Of Service Standard COS profiles § 60% - D 1, 30% - D 2, 10% - D 3 § 66% - D 1, 33% - D 2 § 100% - D 2 SILVER – Unique COS § 100% of the IP bandwidth l Approved option for the traffic allocation: § D 1: 75% - ECMWF dissemination and GTS § D 2: 20% - Aladin/RETIM/LACE/coupling File Transmission § D 3: 5% - Other (Default) Slide 6 RMDCN Network Architecture 6

COS Management l Data classes D 1, D 2 and D 3 - 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 RMDCN Network Architecture Slide 7 7

APPLICATION CLASSIFICATION RULES l From the CE to the Backbone. - OBS has configured the Network’s 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 (D 1, D 2 or D 3). Unclassified application traffic will by default be assigned to the “by default” COS class. l 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 Slide 8 level class (might be D 2 or D 3). RMDCN Network Architecture 8

CONTINGENCY SOLUTIONS l Standard Connection - NAS BACKUP – SINGLE CPE - NAS BACKUP – DUAL CPE (Warm Standby) – Enhanced - ON-NET BACKUP – DUAL CPE l Mission Critical Connection - DUAL CONNECTION – SHADOW ACCESS – SINGLE CPE - DUAL CONNECTION – SHADOW ACCESS – DUAL CPE § Mission Critical Slide 9 RMDCN Network Architecture 9

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

Dual Connection – Mission Critical Resiliency OBS IP VPN Network level of resiliency Customer Site Primary CE router Access cces Seco y. A ndar s Dual CPE CE router Slide 11 RMDCN Network Architecture 11 Equant Pop

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

Routing issues l Between CE router and NAS router: HSRP l Mission Critical Setup: 2 CE routers - HSRP l LAN Route redistribution - BGP - EIGRP - OSPF - RIP v 1, RIP v 2 - Static Slide 13 RMDCN Network Architecture 13

Background – The SRF 2 Document l 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 SRF 2 documents on behalf of the RMDCN sites Slide 14 RMDCN Network Architecture 14

Background – The SRF 2 Document l The pre-filled OBS SRF 2 document - One pre-filled SRF 2 by OBS per RMDCN IPVPN site - The focus is on the required technical details pages Slide 15 RMDCN Network Architecture 15

Service Metrics and Help Desk l SLA 99. 9% (100% for Mission Critical sites) l Now Site Availability (used to be PVC availability) l Pro-active monitoring - 24 User Sites - Only English language - OBS Help Desk in New Delhi l Re-active monitoring - 18 User Sites - Local Language Slide 16 RMDCN Network Architecture 16

Co. S Load Balancing NAS Backup Speed enhanced Gold NO 512 2 M enhanced Gold NO 384 2 M 2 M mission critical Gold NO N/A Finland 2 M 768 enhanced Gold NO 256 France 4 M 3 M mission critical Gold NO N/A Germany 2 M 2 M mission critical Gold NO N/A Greece 1 M 768 enhanced Gold NO 384 Ireland 1 M 1 M enhanced Gold NO 512 Italy 2 M 2 M mission critical Gold NO N/A Luxembourg * 2 M 768 enhanced Gold NO N/A Netherlands 2 M 768 enhanced Gold NO 384 Norway 2 M 2 M enhanced Gold NO 1 M Portugal 768 enhanced Gold NO 384 Spain 2 M 2 M enhanced Gold NO 512 Sweden 4 M 3 M mission critical Gold NO N/A Switzerland 2 M 768 enhanced Gold NO 384 Turkey ** 768 extra enhanced Gold NO N/A United Kingdom 2 M 2 M Slide mission critical 17 Gold NO N/A ECMWF 50 M mission critical Gold YES N/A Access Speed IPVPN Port Speed Resiliency Austria 2 M 1 M Belgium 2 M Denmark Country/Site ECMWF Member States RMDCN Network Architecture 17

ECMWF Co-operating States Croatia 512 enhanced Gold NO 256 Czech Republic 2 M 2 M enhanced Gold NO 1 M Estonia 64 64 enhanced Silver NO 64 EUMETSAT 2 M 2 M mission critical Gold NO N/A Hungary 1 M 1 M enhanced Gold NO 256 Iceland 128 enhanced Gold NO 128 Lithuania 128 enhanced Silver NO 128 Romania 2 M 256 enhanced Gold NO 128 Serbia 512 enhanced Gold NO 256 Slovenia 256 enhanced Gold NO 256 Bulgaria 512 enhanced Gold NO 128 China 2 M 2 M mission critical Gold NO N/A India 128 enhanced Gold NO 128 Japan 1 M 1 M mission critical Gold YES N/A Jordan 128 enhanced Gold NO 128 Latvia 128 enhanced Gold NO 128 Lebanon 128 enhanced Gold NO 128 FYR Macedonia 128 enhanced Gold NO 128 Poland 128 enhanced Gold NO 128 Russian Federation 512 Gold NO N/A Saudi Arabia * 512 128 enhanced Silver NO N/A Slovakia 256 enhanced Silver NO 128 United Arab Emirates 128 enhanced Gold NO 64 Other RMDCN Member States RMDCN Network Architecture Slide mission critical 18 18

Questions? Slide 19 RMDCN Network Architecture 19