When the active port and the active link fail, choose a standby port and a standby link to transceive the packets.

Thus, frames addressed to the dead port are redirected to the backup port (30) and few frames are lost.

Also disclosed at the same time is an apparatus for rapidly restoring a spanning tree backup port.

Disclosed are a method and apparatus for rapidly restoring a spanning tree backup port.

The root port and designated port roles remain, while the blocking port role is split into the backup and alternate port roles.

The root port and designated port roles remain, while the blocking port role is split into the backup and alternate port roles.

A backup port receives more useful BPDUs from the same bridge it is on and is a port blocked.

A "backup port" is a port blocked by receiving more useful BPDUs from the same bridge on which the port is located.

A "backup port" is a port blocked by receiving more useful BPDUs from the same bridge on which the port is located.

A backup port receives more useful BPDUs from the same bridge it is on and is a port blocked.

The application of the technical solution of the present invention can significantly shorten the restoration time of a backup port, and greatly improve the link restoration performance.