Method, device, and system for establishing traffic engineering label switched path

摘要

A method, a device, and a system establish a traffic engineering label switched path, which can implement effective isolation between tenants or between services, to ensure security of tenant topology information or service topology information. The method includes: receiving, by an egress node, a resource reservation protocol-traffic engineering RSVP-TE-based Path message sent by an ingress node; determining, by the egress node, whether identification information of a TE LSP and owner-related information corresponding to the TE LSP are stored; and if it is determined that the identification information of the TE LSP and the owner-related information corresponding to the TE LSP are not stored, storing, by the egress node, a correspondence between the identification information of the TE LSP and the owner-related information, and sending an RSVP-TE-based resource reservation Resv message to the ingress node. The present application is applicable to the field of communications.