FIELD: electrical communication engineering.
SUBSTANCE: invention relates to 1+1 end-to-end bidirectional switching, which realises a bidirectional switching function during a path fault. Method includes steps of: a head node receiving alternative path information sent by a node detecting a fault; the head node acquiring a first path according to the alternative path information and switching a service to a data channel corresponding to the first path; and the head node sending, on the first path, information about the first path to a tail node, so as to enable a node with a 1+1 protective capability on the first path to determine, according to the information about the first path, to switch the service to the data channel corresponding to the first path.
EFFECT: technical result is that the selective receiving paths are the same between the head node and the tail node.
25 cl, 15 dwg
