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Policy Attribute Provides differentiated services and this attribute uses a resource class attribute Allowable hops of end to end The number of resources offered Protection and restoration mechanism for network survivability Optical signal noise ratio (OSNR), bit error rate (BER) Network provisioning Implementation method limitation of end-to-end hops network management S1 allows a maximum of 30 hops,S2 allows a maximum of 20 hops limitation of the number of available wavelengths per link Differentiated services can be provided according to the resource grade attribute The Characteristics of Common Attributes |