7 results about "Bidirectional Forwarding Detection" patented technology

A node of a network includes a network interface configured to receive outgoing bidirectional forward detection (BFD) echo packets transmitted from an originating node and to transmit return BFD echo packets with queue depth information appended thereto back to the originating node; a queue depth information generator configured to collect queue depth information; and a processor configured to append the queue depth information to the outgoing BFD echo packets. Other apparatus and methods are disclosed.

The application provides a network fault repair method and system based on multi-protocol detection, and relates to the technical field of network communication, which comprises the following steps: collecting link layer discovery protocol, address resolution protocol, routing table and bidirectional forwarding detection session state information; constructing a directed graph model comprising a plurality of nodes and links; identifying a primary path of current traffic according to the bidirectional forwarding detection session state information, and determining a fault link segment according to the primary path; generating a dynamic state identifier set according to the address resolution protocol, the routing table and the fault link segment; and generating a candidate optimized path according to the directed graph model and the dynamic state identifier set. Three key states, i.e., forwarding reachability, policy blocking and link fault, are accurately identified. The dynamic state identifier set truly reflects the actual carrying capacity of a link to service traffic, and fundamentally avoids the problem of traffic black hole after switching caused by misjudgment of routing reachability, i.e., forwarding reachability.

The application discloses a fault processing method and device based on linkage of VRRP and BFD, equipment and storage medium, relates to the technical field of network communication, and comprises the following steps: when detecting that a BFD module is faulty, adjusting heartbeat messages of a VRRP module according to a preset heartbeat detection instruction to obtain target heartbeat messages; performing link detection according to the target heartbeat messages to obtain a detection result; and when the detection result is a link exception, triggering the VRRP module to perform route switching. The technical problem of how to maintain the rapid detection capability of a virtual route redundancy protocol for a link fault in the case of failure of a bidirectional forwarding detection module is solved; the linkage control hub actively takes over the link detection responsibility after the failure of the bidirectional forwarding detection module, upgrades heartbeat detection of the virtual route redundancy protocol from a basic mode to an enhanced mode, and therefore the link fault sensing capability is still maintained in the case of absence of the bidirectional forwarding detection module.

The present disclosure relates to a control method, system and interactive terminal of a bidirectional forwarding detection session, and relates to the technical field of network security. The method of the present disclosure comprises: a first interactive terminal adding a first sequence identifier and a first response identifier in a first BFD session message, wherein the first sequence identifier is a unique identifier of this message interaction, and the first response identifier is set as a value representing no response; the first interactive terminal sending the first BFD session message to a second interactive terminal; the first interactive terminal receiving a second BFD session message sent by the second interactive terminal, wherein the second BFD session message comprises a second sequence identifier and a second response identifier; and the first interactive terminal determining that the second BFD session message is a response message of the first BFD session message in the case that the second sequence identifier is the same as the first sequence identifier and the second response identifier is set as a value representing a response.

A node of a network includes a network interface configured to receive incoming bidirectional forward detection (BFD) echo packets from an originating node and to transmit return BFD echo packets with performance metrics appended thereto back to the originating node. The node also includes a performance metrics generator configured to collect the performance metrics related to at least the node and a processor configured to append the performance metrics to the outgoing BFD echo packets. Other apparatus and methods are disclosed herein.

A method, apparatus, and system for adaptively adjusting the BFD detection threshold, relating to the field of communication technology, are disclosed. The method includes: configuring a Connection Fault Management (CFM) function; establishing at least one Maintenance Association (MA), with each MA bound to a service type; periodically collecting link quality data of the link using maintenance endpoints (MEPs) deployed on the link; calculating the network quality score of the link based on the link quality data and the weights corresponding to the service types associated with each MA; determining the bidirectional forwarding detection (BFD) threshold corresponding to the link based on the network quality score; and updating the detection parameters of the BFD session based on the BFD detection threshold to perform fault detection on the link. This invention enables the BFD detection mechanism to adaptively adjust according to the real-time quality status of the network.