Patent ID: 8755685
Filing Date: 2014-06-17
Classification: H04B,H04L,H04Q

Abstract:
1. A joint switching method of an aggregation node, comprising: monitoring, by an aggregation node, digital subscriber line (DSL) port status information transferred between an active optical line terminal (OLT) and a broadband network gateway (BNG), wherein the OLT is connected to the BNG through the aggregation node; and, determining by the aggregation node, according to the DSL port status information, whether a link or a device fault occurs on an active OLT side, wherein the DSL port status information is periodically reported by an optical network unit (ONU) to the BNG through an access node control protocol (ANCP) message or an operation administration maintenance (OAM) message; and if a link fault or a device fault occurs on the active OLT side, enabling, by the aggregation node, a backup port of the aggregation node connected to a backup OLT, and disabling an active port of the aggregation node connected to the active OLT; wherein the determining by the aggregation node according to the DSL port status information whether a link fault or a device fault occurs on the active OLT side comprises: determining by the aggregation node that the active OLT or a link between the active OLT and the aggregation node is faulty if the aggregation node does not receive any DSL port status information from any ONU within a certain period of time.