Enabling Grids for E-sciencE
NRENs & Grids Workshop Relations between EGEE & NRENs Mathieu Goutelle (CNRS UREC) EGEE-SA2 activity Amsterdam, 2005-05-12 www.eu-egee.org INFSO-RI-508833
EGEE Networking Activities Enabling Grids for E-sciencE
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SA2: Network Resource Provision – Technical Network Liaison Committee, – Operational interface with NRENs, – QoS experiment, – SLAs installation between EGEE Ù Network (Geant & NRENs).
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JRA4: Network Services Development – Bandwidth Allocation and Reservation, – Network Performance Monitoring, – IPv6 Uptake.
Building important working relation between EGEE and the network providers (Geant & NRENs) INFSO-RI-508833
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Our approach Enabling Grids for E-sciencE
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Network must be viewed as a class of Grid resource: – Like computing and storage resources, – Implies a network resource provisioning architecture, – Problem to manage a resource outside the EGEE world! This resource depends on the network services provided by the network providers (NRENs, Geant): – Current services: Premium IP (even not in all NRENs), – We need to anticipate on the future GN2 services: Currently in the definition process, GN2 project started 6 months later than EGEE.
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Network Activities work in a long term perspective: – Most of the tasks started from scratch: Operational interface, SLA, NPM, BAR… Except the monitoring tools coming from Datagrid (WP7).
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Operational interface Enabling Grids for E-sciencE
• Define the interactions between the Grid User support and the NREN NOCs: SLA management (processing, installation, monitoring), Trouble management (reporting, interactions).
– Definition of procedures and information flows between NOCs and EGEE: Need of a consistent view of the “EGEE network”, Need to evaluate its reliability and the quality of the services, Will not replace the current interactions between a resource centre and its NREN.
• Progressive integration into the existing Grid User Support (GGUS, http://www.ggus.org/): – Single entry point for the support to the Grid users, – Difficulties remain (trouble tickets normalization, languages…). INFSO-RI-508833
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GEANT/NRENs notification handling Enabling Grids for E-sciencE
E-mail notifications
NREN NREN GEANT GEANT
NREN NREN NREN NREN
Handling Procedure
ENOC
Filtering
Network related
TTS TTS INFSO-RI-508833
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Troubleshooting workflow Enabling Grids for E-sciencE
Problem problem assignment essiment
ENOC
TTM
Feedback
Feedback Problem Problem signalisation signalling
NOC B
USER PERT
RC
NREN A
Problem resolution
failure GEANT
NREN B RC
TTM: Trouble Ticket manager ENOC: EGEE Network Operation Center
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SLA Enabling Grids for E-sciencE
• SLA definition: – Based on previous work and answers inside EGEE and from GN2 to some open issues (procedures, demarcation point…), – Definition in cooperation with GN2,
• EGEE end-to-end SLA template: – SLA between the border of the NRENs cloud (border-to-border SLA) ; – Difficulty to accommodate and take into account the “last mile”. e2e SLA b2b SLA
Campus or Local Provider
GEANT
NREN 1
Campus or Local Provider
NREN 2
EGEE site B
EGEE site A
A EGEE end-point A
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B SLA1
C SLA2
D EGEE end-point B
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SLA institution scenarios Enabling Grids for E-sciencE
• All domains involved in network services provisioning to EGEE as part of the existing network infrastructure hierarchy have to be categorized as: – Compliant with the Premium IP service – Supportive of the Premium IP service – Indifferent to the Premium IP service
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QoS experiment Enabling Grids for E-sciencE
• Network service use case for an application: – Choice of a particular “interactive” application, – Aim: Better knowledge of the SLA processing, Better specifications of the applications requirements, Precision about procedures and identified issues.
• Status: – Validation on a local platform: Validation of middleware modifications (packets marking), Validation of the experimental protocol.
– Tests on long distance networks: First in the same administrative domain (Renater), Then, tests involving three different networks, Involved networks: Renater, Geant, GRnet. INFSO-RI-508833
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Network Performance Monitoring Enabling Grids for E-sciencE
• JRA4 approach: Standardization of access to network performance monitoring across different domains and frameworks, GGF NM-WG recommendation is the selected basis for standardisation.
• Purpose: – Provide to Grid operations networking information for monitoring and troubleshooting, – SLA monitoring, – Information publication in the Grid Information System.
• Potential user : middleware, end-user, Grid operations • Status: – Prototype ready (demo during the last GGF), – Security (on-going work inside EGEE), – Work on the interactions with the middleware. INFSO-RI-508833
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Network Performance Monitoring Enabling Grids for E-sciencE
Some Client
NM-WG
NM-WG
End Site EDG WP7
End Site Home grown
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NM-WG
NM-WG
NM-WG
Backbone Perfmonit
Backbone PiPEs
Backbone GN2
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Network Performance Monitoring Enabling Grids for E-sciencE
Diagnostic Client
NM-WG
JRA4 NPM Mediator NM-WG
NM-WG
End Site EDG WP7
End Site Home grown
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NM-WG
NM-WG
NM-WG
Backbone Perfmonit
Backbone PiPEs
Backbone GN2
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BAR Enabling Grids for E-sciencE
• Purpose: – Provide Grid users the ability to use network services (reservations), – Interface with the mechanisms that will be available in the network, – Will first propose the Premium IP service.
• Status: – Step-by-step integration with the network services: Static configuration between 2 backbone sites ― june 2005, Investigation of the “last mile” problem ― oct. 2005, Pilot reservation system in limited number of site ― jan. 2006.
– Need of a strong participation of NRENs (GN2).
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Reservation Architecture Enabling Grids for E-sciencE
• Integration of network resource in a more complex architecture: – Essential to meet the applications requirements, – Convergence between the allocation and reservation architecture of the EGEE middleware and the reservation architecture developed by GN2, – Joint work of GN2 and EGEE.
• Status: – GN2 architecture is to be defined: Based on inter-domain SLAs, A still very manual prototype is foreseen due beginning of next year.
– Preparatory work inside EGEE : Convergence to a common architecture, Consistency between the two architectures.
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Conclusion Enabling Grids for E-sciencE
• Progression of the two activities according to plan, • Good progress in terms of SLAs definitions: will the NRENs support our model? • Test of the operational interface during the summer, • QoS experiment = further step towards the fulfilment of applications requirements in term of network resources, • Good working relations with NRENs and GN2.
Questions? INFSO-RI-508833
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