One of the key features of optical networks is protection switching. VMware Smart Assurance Optical Transport Manager supports Layer 1 network topologies with the following protection schemes for SONET/SDH networks:
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1+1 Automatic Protection Switching (APS)
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1:N protection
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1+1 protection
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2-fiber Bidirectional Line Switched Ring (BLSR) or 2-fiber Multiplex Section-Shared Protection Ring (MS-SPRing)
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4-fiber BLSR or 4-fiber MS-SPRing
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UPSR (SNCP)
The following protection scheme is supported for the WDM network:
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1+1 ClientCircuit/TopologicalLink Protection
The following protection scheme is supported for the WDM NG domain:
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Y-cable protection
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SNC protection