Apparatus and method of real-time recovering service
A service and router technology, applied in the field of network communication, can solve problems such as inability to guarantee VRRP convergence, waste of system resources, failure to meet real-time communication, etc., and achieve the effect of overcoming long convergence time
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[0029] BFD (Bidirectional Forwarding Detection) is a router fault detection protocol gradually developed from the basic transmission technology. It can detect faults at all layers of the network, and can be used to detect Ethernet, Multi-Protocol Label Switching (MPLS) paths, Generic routing encapsulation and multiple types of transport correctness including IPSec (IP Internet Security Protocol) tunneling.
[0030] In essence, BFD is a high-speed independent HELLO protocol that can establish a peer-to-peer relationship with adjacent systems. Then, each system monitors the BFD rate from other systems at a negotiated rate, and the monitoring rate can be incremented in milliseconds. set up. When a peer system does not receive a preset number of packets, it infers that the software or hardware infrastructure protected by BFD has failed, whether the infrastructure is a label-switched path, another type of tunnel, or an Ethernet network.
[0031] BFD works like figure 2 As shown,...
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