Discussion on the Thinking and Strategy of SDH Withdrawal in China Mobile Metropolitan Area Transport Network
Driven by both policy promotion and technological evolution,the withdrawal of SDH has been put on the agenda,and VC-OTN,as a replacement for SDH,has begun to be deployed on a large scale.Based on the differences in the timing and timing of network withdrawal,three types of network withdrawal strategies were proposed:conservative,proactive,and proactive.Combined with the analysis of SDH's network and business status,a network integration scheme for SDH and VC-OTN was proposed,which preserves the SDH access layer and performs net-work withdrawal on the core layer and aggregation layer.The proactive approach has strong fea-sibility and meets the actual situation.Propose a network withdrawal strategy for the integration of SDH and VC-OTN in terms of data,management,and control,based on the situation of the same manufacturer and different manufacturers.
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