Compared with traditional networks

the PON network is easy to be interworking. Passive transportation can provide substantial access rate and mulit-service applications

and it has been developed greatly.Through qualitative researching of the PON network’s networking structure and service characteristics

we analyze the application scenarios that different ways of protection correspond to in the PON network. And summarize the effective methods when the protection is taken into account in network design

redundancy protection of each node in networking and how to improve the operation stability of the network

improve the user experience and perception. And analyze and summarize PON network combination and the realization of redundancy protection under special applications.