Abstract: A method for binding a work Label Switch Path (LSP) with a protection LSP, including: transmitting a first message including binding information to a Path Merging Label Switching Router (PML) via a Path Switching Label Switching Router (PSL) so as to request for creating a protection LSP of the work LSP; the PML router assigning a label for the protection LSP based on the first message and returning a second message carrying the binding information; after receiving the second message, the PSL router binding the work LSP with the protection LSP based on the binding information, and transmitting a notification message including the binding information to the PML router; the PML router binding the work LSP with the protection LSP based on the binding information in the notification message.

Abstract: The present invention discloses a method for data forwarding used in label switching networks, with which, at the source node, sequence numbers are added to the data packets forming an original data flow to be forwarded according to the forwarding order, then the data packets are mapped to label switched paths (LSP) for forwarding; at the destination node, the data packets received from the LSPs are merged into the same data flow as the original data flow to be forwarded according to the order of the sequence numbers. Meanwhile, during the data forwarding in accordance with the invention, an alarm mechanism is used to detect a faulted LSP, and the mapping strategy is adjusted timely to avoid the massive loss of the data packets, which guarantees the security of the data forwarding to the greatest extent while a high bandwidth utilization ratio is ensured.

Abstract: Embodiments of the present invention disclose a method of domain supervision in a label switched network, including: designating one or more OAM domains on an LSP in the label switched network, determining an ingress node and an egress node of each OAM domain, inserting in-domain OAM frames containing supervision information at the ingress node of each OAM domain, receiving and parsing the in-domain OAM frames by the egress node of each OAM domain, and managing an OAM domain according to the supervision information contained in an in-domain OAM frame of the OAM domain. Furthermore, embodiments of the present invention also disclose a method of domain protection in a label switched network through adding a detection frame, such as Connectivity Verification (CV) frame, Fast Failure Detection (FFD) frame or the like, into an in-domain OAM frame.

Abstract: The present invention discloses a method for data forwarding used in label switching networks, with which, at the source node, sequence numbers are added to the data packets forming an original data flow to be forwarded according to the forwarding order, then the data packets are mapped to label switched paths (LSP) for forwarding; at the destination node, the data packets received from the LSPs are merged into the same data flow as the original data flow to be forwarded according to the order of the sequence numbers. Meanwhile, during the data forwarding in accordance with the invention, an alarm mechanism is used to detect a faulted LSP, and the mapping strategy is adjusted timely to avoid the massive loss of the data packets, which guarantees the security of the data forwarding to the greatest extent while a high bandwidth utilization ratio is ensured.

Abstract: A method, an apparatus and a system for establishing a return LSP in an MPLS system are disclosed. The method includes: recording a path of a protection LSP; constructing an explicit routing object along the reverse of the path of the protection LSP; establishing the return LSP according to the explicit routing object. It is possible to effectively avoid that a return LSP overlaps with a working LSP in accordance with the embodiments of the present invention, thereby ensuring the transmission of LSP failure information via the return LSP in the case that the working LSP fails or transmission quality is impaired, and ensuring the normal operation of protection switching.

Abstract: Embodiments of the present invention disclose a method of domain supervision in a label switched network, including designating one or more OAM domains on an LSP in the label switched network, determining an ingress node and an egress node of each OAM domain inserting in-domain OAM frames containing supervision information at the ingress node of each OAM domain, receiving and parsing the in-domain OAM frames by the egress node of each OAM domain, and managing an OAM domain according to the supervision information contained in an in-domain OAM frame of the OAM domain. Furthermore, embodiments of the present invention also disclose a method of domain protection in a label switched network through adding a detection frame, such as Connectivity Verification (CV) frame, Fast Failure Detection (FFD) frame or the like, into an in-domain OAM frame.

Abstract: A method for binding a work Label Switch Path (LSP) with a protection LSP, including: transmitting a first message including binding information to a Path Merging Label Switching Router (PML) via a Path Switching Label Switching Router (PSL) so as to request for creating a protection LSP of the work LSP; the PML router assigning a label for the protection LSP based on the first message and returning a second message carrying the binding information; after receiving the second message, the PSL router binding the work LSP with the protection LSP based on the binding information, and transmitting a notification message including the binding information to the PML router; the PML router binding the work LSP with the protection LSP based on the binding information in the notification message.