Patent ID: 9130669
Filing Date: 2015-09-08
Classification: H04B,H04L,H04Q

Abstract:
1. A troubleshooting method, comprising: determining, by an aggregation node when a link fault or a device fault occurs on an active optical line termination OLT side, an active logical port used by the active OLT to forward a data packet, wherein the active logical port supports at least one user service, and each user service is denoted by a user service identifier (C-VLAN, S-VLAN) formed by a user local area network tag C-VLAN and a service local area network tag S-VLAN; searching, by the aggregation node, a locally stored logical port mapping table according to the active logical port to obtain a standby logical port corresponding to the active logical port, wherein the standby logical port supports a same user service as the active logical port; and triggering, by the aggregation node, the standby OLT to enable the standby logical port to receive a data packet that is sent by the standby OLT through the standby logical port.