TRANSMISSION MULTI-PROTOCOL LABEL SWITCHING NETWORK SYSTEM AND LINK PROTECTION METHOD

摘要

A Transmission Multi-Protocol Label Switching T-MPLS network system and a link protection method are provided in the present invention. The T-MPLS network system includes: a main link including at least three main communication nodes; a looped network protection link located between two adjacent main communication nodes; a linear protection link located between the head and tail main communication nodes of the main link; a first switching module which transmit a data message by using the looped network protection link between two adjacent main communication nodes when the main link between the two adjacent main communication nodes fails; a second switching module which transmit the data message by using the linear protection link when a middle main communication node of the main link fails. The present invention can provide more effective and reliable link protection for the T-MPLS network system.