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LCAS scenario

LCAS scenario. Domain 2 SDH network. UNI. UNI. Domain 1 SDH network. Domain 3 SDH network. Ethernet. LCAS scenario.

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LCAS scenario

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  1. LCAS scenario Domain 2 SDH network UNI UNI Domain 1 SDH network Domain 3 SDH network Ethernet

  2. LCAS scenario • (Multi-domain) SDH transport network with LCAS/VCAT/GFP capabilities (at least in the edge-nodes) supporting ethernet clients both “smart” (i.e. routers) and “dumb” (i.e. switches) • Dynamic allocation of VCs to efficiently transport ethernet traffic (up to 2 VC-3 for fast-ethernet and up to 21 VC-3 for gigabit-ethernet). Different granularities may be used as well. • For “smart” client devices: • UNI with “call bandwidth modification” primitive • For “dumb” client devices: • An automatic trigger mechanism can be implemented on the edge nodes, monitoring the amount of traffic received from the client device • Higher resilience degree can be obtained dividing the VCG on 2 or more diversely routed paths.

  3. Network services • Use of legacy SDH metro (or regional) networks for transport of ethernet signals from the access segment to the metro aggregation POP • Interconnecting of geographically distributed ethernet LANs • Interconnecting metro PoPs via a Core (Long Haul) Network

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