Introduction for HUAWEI Access Network GPON Networking Protection

GPON network is the mainstream nowadays, GPON networking protection is very important. Below are introductions of networking protection.

Type B Single-homing Protection

·        Type B protection is implemented for different PON port on the same Huawei MA5800 GPON OLT or MA5600T GPON OLT

                                             

·        Advantages: The networking, OLT/ONU management, and service provisioning are simple.

·        Disadvantages: If the OLT is faulty, services are interrupted. Optical fibers are usually laid in the same pipe, and two optical fibers may be disconnected at the same time.

·        Application scenario: Protects important services of users, such as enterprise private line access services and base station private line access services.

Type B Dual-homing Protection

·        Type B dual-homing protection is implemented for PON ports of two OLTs

Advantages: Two backbone optical fibers are connected to two OLTs to implement remote disaster recovery.

Disadvantages: The networking is complex, the cost is high, and the OLT configuration is complex.

Application scenario: Protects important services such as enterprise private line access services and base station private line access services, especially in scenarios where remote disaster recovery is required.

Type C Single Homing Protection

Type C protection is similar to ring protection implemented for the OLT, ONU and optical splitter.

                                             

·        Advantages: The networking and OLT/ONU management is simple.

·        Disadvantages: If the OLT is faulty, services are interrupted. Optical fibers are usually laid in the same pipe, and two optical fibers may be disconnected at the same time.

·        Application scenario: Protects important services of users, such as enterprise private line access services and base station private line access services.

Type C Single Dual-homing Protection

·        In dual-homing networking, the two PON lines between the ONUs and two OLTs are in the active/standby state and cannot forward packets at the same time.

·        Advantages: When the upstream link of the OLT or OLT is faulty, services can be switched to the other OLT.

·        Disadvantages: The networking is complex, the cost is high, and the ONU management is complex.

·        Application scenario: Protects power supply as well as enterprise private line access services and base station private line access services