保障网络的安全,尽可能的保障业务不中断成为迫切的需求,建立环网较为常见的是OTN网络。在不具备传输设备保护的条件下,充分利用现有网络资源进行保护调测相当重要。在全华为设备互联的拓扑结构中可以采用RRPP或SMART-LINK协议,只需要调测很少的链路资源就能实现保护,在实际应用中较为方便。不同厂家设备共存的情况下,可以根据实际情况灵活运用。 Ensuring the security of the network and ensuring uninterrupted service as much as possible become an urgent need. Establishing a ring network is more common in an OTN network. Without the protection of transmission equipment, it is important to make full use of existing network resources for protection and commissioning. In the topology of all equipment interconnection in China, RRPP or SMART-LINK protocol can be adopted. Only the link resource with little commissioning can be protected, which is more convenient in practical applications. Different manufacturers of equipment coexist circumstances, can be flexibly applied according to the actual situation.