PROTECTION TUNNEL

摘要

A network device configures a unique ring number for each interface in a ring network and stores the ring number. The network device receives a RSVP confirmation packet from a next-hop network device, storing a route object record contained in the RSVP confirmation packet. The network device parses the route object record of the primary tunnel, searches for an end network device on the primary tunnel in the same ring network, sets the end network device as a destination network device of a protection tunnel of the network device, sets the network device as a start network device of the protection tunnel, and store path information of the protection tunnel. An interface of the end network device has the same ring number with an egress interface of the network device.

主权项

1. A method for establishing a protection tunnel, applied to a network device in a ring network and comprising:
configuring, by the network device, a unique ring number for each interface in the same ring network, and storing the ring number; receiving, by the network device, a Resource Reservation Protocol (RSVP) confirmation packet from a next-hop network device, storing a route object record contained in the RSVP confirmation packet, and the route object record contained in the RSVP confirmation packet recording ring numbers of ingress interfaces and egress interfaces of network devices on a primary tunnel; and parsing, by the network device, the route object record of the primary tunnel, setting an end network device on the primary tunnel in the same ring network as a destination network device of a protection tunnel of the network device, setting the network device as a start network device of the protection tunnel, and storing path information of the protection tunnel; an interface of the end network device on the primary tunnel in the same ring network having the same ring number with an egress interface of the network device.