Method and system for protecting multicast repeat path and service router
A technology of forwarding paths and protection groups, which is applied in transmission systems, digital transmission systems, and devices that provide special services in branches, and can solve problems such as interruption of multicast services.
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[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with specific embodiments.
[0037] Bidirectional Forwarding Detection (BFD) is a set of international standard protocols for fast detection, which can detect faults on any type of channel between systems. The channels between the systems include: direct physical links, virtual circuits, tunnels, multi-protocol label switching paths (MPLS LSPs), and indirect channels. BDF sends BFD query messages to each other regularly and quickly between two nodes, and detects at the receiving end. If no BFD query messages are received within three agreed periods, it is judged as a disconnection. BFD can focus on fast detection of forwarding faults and help the network achieve good multicast service transmission. The embodiment of the present invention provides a method and system for protecting a multicast forwarding ...
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