Panel discussion about networking architecture issues

1
Panel discussion about networking architecture
issues

• Dany.Vandromme_at_renater.fr
• www.renater.fr

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DEDICATED vs SHARED

• Network configuration lt--gt GRID interaction
• DEISA will be provided with an star OPN (VPN
  today)
• Future of HPC infrastructure should be a mix of
  core network and access infrastructure. With
  multiple connections to all HPC sites and not all
  of them on the core part!

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DEDICATED vs SHARED

• Network configuration lt--gt GRID interaction
• LHC (T0-T1 and T1-T1) will be provided with an
  OPN
• LHC (T1-T2) will used a shared resource, with
  dynamic services configuration (BoD) gt EGEE
• Dedicated network (unique OPN) is the cheapest
  solution if there was a single pan-European
  project (LCG). Reality is not that, and not a
  technical optimum either (answer to Kors Bos!).
• eVLBI is using a VPN, and will migrate eventually
  towards an OPN in the future

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Scalability

• Star topology is the initial sketch for all
  projects, which contradicts completely the grid
  spirit.
• Ideal full mesh topology is not scalable
• Star topology is not scalable either! (If it was,
  it should not be resilient)
• Internet model is the most scalable (made of core
  access infrastructure)
• OPN must comply with this
• Central overall management is required. Shared
  AUP (CA at large) is required.

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OVERLAP

• Grid community is discovering what
  telecommunications know and have been performing
  for long time already
• 24/7,
• upgrade cost and complexity,
• interdomain and interoperability issues,
• monitoring, central management or standardization
  forces with operational interoperability of
  management,
• Security.

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