Network failure protection method, system, and storage medium

A network failure protection system, comprising a Bit Index Explicit Replication Traffic Engineering (BIER-TE) controller and a Bit Index Explicit Replication (BIER) Forwarding Router, wherein:

• the BIER-TE controller is configured to allocate a protection ring bit position for each forwarding link of a ring topology, wherein a direction of the protection ring bit position is opposite to a working path of a corresponding forwarding link, newly add a BIER Ring Forwarding Table (BRFT), wherein the BRFT is configured to store an adjacent forwarding table entry related to forwarding along the direction of the protection ring bit position, and forward the table entry related to forwarding of a BIER message to the BIER Forwarding Router through a southbound interface;
• and
• the BIER Forwarding Router is configured to receive the table entry related to forwarding of the BIER message sent from the BIER-TE controller through the southbound interface;
• when the BIER message is forwarded along the working path, in response to a failure of downstream adjacency of a forwarding link detected by the BIER forwarding router (BFR), search for the entry content of a BIER-TE Adjacency FRR Table (BTFT) to find a correlation between a link bit position of a failure forwarding link and the protection ring bit position, and forward, on the basis of the entry content of the BRFT, the BIER message to a failure point of an opposite end along the direction of the protection ring bit position.