Restoration of underground networking during LHC construction

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Restoration of underground networking during LHC
construction

• Luit de Jonge/SL-CO

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Outline

• Which services do we have today
• LHC civil engineering sites in the underground
• Which services will we loose
• Rerouting of services via the surface
• General services restoration planning
• Which services do we need at this time???

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Which services do we have today

• FDDI-Ethernet
• surface
• underground
• TDM (Time Division Multiplexing)
• surface
• underground
• Optical Fibre Network
• surface
• underground

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LHC civil engineering sitesin the underground
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Which services will we looseduring LHC
construction

• Basically all of the services in the underground

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Rerouting of services via the surface

• Optical fibres to P5 and P7
• SDH (Synchronous Digital Hierarchy)
• installations at PCR, P5 and P7
• FDDI to P5 and P7 connected via the surface
  optical fibres
• Video connections via the same fibres

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General services restoration planning
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Which services do we need at this time???

• Ethernet connections, but which technology?
• ATM connections?
• SDH connections for point to point links and
  transport of IP traffic?
• FAT optical fibre cables all around the tunnel?
• Secure power supply! (220Vac/-48Vdc)

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Concluding remark
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many ???????? but we will
succeed