4 results about "Link-state advertisement" patented technology

Embodiments of the present disclosure provide method and apparatus for Designated Router (DR) seamless switchover. A method performed by a network device comprises detecting a DR failure event due to a failure DR. The method further comprises detecting that the second edge device is unreachable. The method further comprises holding refresh of router-Link State Advertisements (router-LSA) in a link-state database and flooding procedure, when a Backup Designated Router (BDR) has not declared to be a working DR in an Open Shortest Path First (OSPF) network.

There is provided a method and system for transmitting link state update (LSU) packets containing new link state advertisements (LSAs). In some embodiments, the transmission of the LSU packet is based on the priority of the received LSAs and the status of a pacing timer. In the same or other embodiments, a control stack is generated for tracking the number of unacknowledged LSAs previously transmitted and the interface transmit time interval is adjusted based on the control stack.

The invention provides a routing error processing method and device and related equipment, and relates to the technical field of communication. The method is executed by first equipment and comprises the following steps: detecting a database description (DD) message sent by second equipment under the condition that the first equipment is abnormally restarted, and regenerating and sending a second link state notification when the DD message contains a first link state notification of the first equipment; wherein the serial number of the first link state announcement is greater than the serial number of the link state announcement existing in a local database; or, sending the first target message to the second device; wherein the first target message comprises a first identifier, and the first identifier is used for indicating a delayed migration neighbor state. According to the scheme provided by the invention, the problem that the routing calculation result is wrong after the routing is restarted is solved.

The application provides a low-orbit satellite network dynamic routing optimization method and system based on sub-domain routing, which comprises the following steps: dividing a satellite network into multiple areas, and assigning a unique IP address to each satellite node; in each area, synchronizing intra-domain topology information through Hello data packets and link state advertisements to generate an intra-domain routing table; synchronizing inter-domain topology information through border gateways and summary link state advertisements to generate an inter-domain routing table; and forwarding data packets according to the intra-domain and inter-domain routing tables. The application can reduce signaling overhead, improve routing calculation efficiency, enhance network stability, and optimize network resource utilization.