Optimum restarting realizing method for generating tree protocol in two-layer network device

The invention discloses an elegant restarting method to generate Spanning Tree Protocol in the two-layer network equipment, resolving that the existing method can be realized only in the three-layer network equipment not in the two-layer one. It includes: the Line Card records the bridge protocol data unit reported text sent by the master control panel, using the reported text on the Line Card to report outward when the master and standby control panels switch, after switching, using the reported text generated by Spanning Tree Protocol on the current master control board to report outward.