14 results about "Spanning Tree Protocol" patented technology

A network device of a virtual switch, which includes a second network device and operates on a unified control plane, is provided. During operation, the network device maintains a link between its first port and a second port of the second network device. Here, the first link can be distinct from a second link used for exchanging data traffic of the virtual switch. The network device operates a spanning tree protocol to place the first and second ports in respective port states, which include a forwarding state and a blocked state. If the second link becomes unavailable, the network device determines that the virtual switch has split into a first segment comprising the network device and a second segment comprising the second network device. If the first port state is in the blocked state, the network device suspends communication via a respective port of the first segment.

To achieve redundant data transmission in a communication network, at least a first (201) and a second virtual local area network (202), VLAN, are each configured on communication devices (101-104, 112-113, 122-123, 132-133, 142-144) of the communication network that forward datagrams (300). Different spanning trees are determined for each of the first (201) and second VLAN (202) within the communication network by applying a spanning tree protocol, said spanning trees being used to specify, for each of the first and second VLAN, active paths for forwarding datagrams via the forwarding communication devices. At least selected datagrams (300) to be transmitted are duplicated by a transmitter-side communication device (111) and transmitted both via the first VLAN (201) and via the second VLAN (202). Received datagrams (300) associated with the VLANs (201, 202) are each checked for identity with an already received datagram by receiver-side communication devices (121, 131, 141) and discarded if an already received identical datagram is present.

The application provides a method, device and medium for quickly converging a spanning tree protocol in an MLAG environment, and belongs to the technical field of network communication. In the method, each network device corresponding to an MLAG link runs a spanning tree protocol (STP), and a master device in the MLAG link acquires a bridge protocol data unit (BPDU) message from a backup device at an opposite end of the MLAG link and / or sends a BPDU message from each MLAG member interface to a corresponding backup device, so as to synchronize the BPDU messages of the MLAG member interfaces of each network device of the MLAG link. The synchronization at least includes message analysis and STP calculation. In the case that there is at least one MLAG member interface fault in the master device, a fault signal is generated. According to the fault signal, an MLAG member interface corresponding to the fault MLAG member interface in the backup device is determined as a switchable MLAG member interface, so as to execute BPDU message packet processing corresponding to the fault MLAG member interface through the switchable MLAG member interface.

The application discloses a kind of MLAG port path cost update method, system, equipment and medium, the method specifically includes: second MLAG device receives the synchronization message from first MLAG device, parses synchronization message to obtain the path cost of first MLAG device root port corresponding and MLAG ID;Based on the transmission rate of each MLAG port of second MLAG device, the path cost value of each MLAG port of second MLAG device is calculated;The path cost value of first MLAG device root port is compared with the path cost value of second MLAG device root port, to update the path cost value corresponding to second MLAG device root port.Compared with prior art, the application can adapt to MLAG port rate according to MLAG protocol state and spanning tree root port state, participate in spanning tree protocol calculation, and the MLAG port of MLAG device uses the same path cost value to participate in spanning tree protocol calculation, improve the stability of spanning tree protocol convergence.

The invention provides a spanning tree protocol configuration automatic checking method and device, a storage medium and a system, and the method comprises the steps: receiving and responding to a gateway down-moving operation instruction, and migrating the gateway function configuration of convergence layer equipment to access layer equipment; acquiring equipment information of an access layer, and generating a spanning tree protocol configuration information table according to the equipment information; and determining a difference configuration item according to the spanning tree protocol configuration information table and a preset spanning tree protocol configuration information table to complete verification of spanning tree protocol configuration, the difference configuration item being a configuration item in which the spanning tree protocol configuration information table is not consistent with the preset spanning tree protocol configuration information table. According to the method and the device, the problems that a data center gateway is generally deployed on convergence layer equipment, so that the coverage range of a single two-layer network segment is relatively large, and once a two-layer loop fault occurs, the fault domain diffusion range is wide, so that the operation risk is high are solved.

In a mesh communication network, bridge devices use two parallel configurations: a first logical network configuration to route data packets point-to-point, using dynamic routing between the bridge devices; and a second logical network configuration to route data packets broadcast, using a spanning tree that eliminates potential loops. Upon receiving a subscription request (410) from a station device, each bridge device is instructed (414) to initiate a source search for the multicast data stream. When the multicast data stream is received via an input port of a bridge device, the bridge device is configured to switch the multicast data stream from the input port to an output port toward the station device, according to the first configuration.

A network device of a virtual switch is deployed, containing a second network device and operating at a unified control plane. During operation, the network device maintains a connection between its first port and a second port of the second network device. The first connection can be different from a second connection used for exchanging traffic within the virtual switch. The network device uses a spanning tree protocol to put the first and second ports into their respective port states, including a forward state and a blocked state. If the second connection becomes unavailable, the network device determines that the virtual switch has split into a first segment containing the network device and a second segment containing the second network device.If the first port is in a blocked state, the network device interrupts communication via a corresponding port of the first segment.

The invention provides a vehicle-mounted information processing method and a vehicle-mounted information processing device, and the method comprises the steps: obtaining the connection state and neighborhood relation information between all devices in a vehicle-mounted network; determining a connection relationship between the devices based on the connection state and the neighbor relationship information; processing the connection relationship by using a fast spanning tree protocol, and determining a trunk path; according to the trunk path, mapping to obtain a topological data model; and performing difference comparison on the topological data model and an existing topological model stored locally, and adaptively selecting a configuration issuing mode to update network configuration according to a comparison result and the protocol support capability of target equipment. According to the invention, the adaptive configuration updating of the vehicle-mounted network topology is realized, and the maintainability and flexibility of the vehicle-mounted network are improved.

The application provides a method, controller and system for automatic configuration of a DPU-based spanning tree protocol in a K8s cluster. The method comprises: real-time monitoring of whether a spanning tree protocol configuration instance in the K8s cluster has configuration data changes, and if so, updating a bridge device table of a virtual switch database according to the spanning tree protocol configuration instance, so that the virtual switch in the DPU receives updated spanning tree protocol configuration data and correspondingly configures or starts a corresponding spanning tree protocol STP and / or a rapid spanning tree protocol RSTP; real-time monitoring of whether the virtual switch configures or starts the STP and / or the RSTP, and if so, updating a state of a custom resource definition unit for the spanning tree protocol, so that a user knows the current spanning tree protocol setting state of the virtual switch. The application can realize automatic configuration of the spanning tree protocol in the K8s cluster, and can effectively improve the real-time performance and reliability of the automatic configuration, thereby effectively improving the efficiency and quality of network operation and maintenance.

This invention introduces an adaptive hybrid network topology including a ring, star, and tree sub-topology interconnected through a shared backbone (100), a shared backbone (100) comprising a hierarchical structure with multiple levels of aggregation, characterized in that said shared backbone are installed network security infrastructure (101) comprising firewalls (104), intrusion detection (1041), Virtual Private Network (1011) and Point-to-Point Protocol over Ethernet (1012), a connection controller module (110) for managing network connections comprising a cross connection module (111), characterized in that said cross connection module is a plurality of a single dual core cable (114) connecting the plurality of intermediate distribution frames (112), a plurality of intermediate distribution frames (112), characterized in that said distribution frames attached are plurality of devices (121) and plurality of virtual local area network (1122) attached in internet service provider, and a failover configuration module (113) utilizing Spanning Tree Protocol (1131) for redundancy and path selection. Disclosed further are the methods for path selection and managing network topology in an adaptive hybrid network.

The invention relates to a spanning tree construction method and device for a spanning tree protocol. The method comprises the following steps: a switch obtains a network bridge protocol data unit message; matching the network bridge protocol data unit message with an in-direction access control list of the switch; determining a source address and a destination address of the network bridge protocol data unit message according to a matching result; and when the source address and the destination address meet a preset rule, constructing and maintaining a spanning tree network topology structure through the network bridge protocol data unit message. According to the spanning tree construction method and device for the spanning tree protocol, the network bridge protocol data unit message which is sent by a local machine and received through a loop can be recognized, it is avoided that normal network bridge protocol data unit messages are received, and consequently spanning tree calculation errors are caused, and the network communication efficiency is improved.

The application discloses a spanning tree environment MLAG protocol fast negotiation method, system, device and readable storage medium. The method comprises the following steps: judging whether the sending end peer-link port is in the blocking state of the spanning tree protocol; if yes, adding an encapsulated BPDU message header to the to-be-sent protocol message, or replacing the destination MAC of the to-be-sent protocol message with the preset BPDU MAC; adding a message identifier to the processed to-be-sent protocol message, and sending the processed to-be-sent protocol message with the added message identifier from the sending end peer-link port. Compared with the prior art, the application can accelerate the MLAG protocol negotiation in the spanning tree scene. The application effectively prevents the problem that the spanning tree protocol state of the peer-link port on the connected MLAG device is not synchronized to the Forward forwarding state, that is, the peer-link port is detected as the forwarding state, but the associated peer-link port on the opposite side is still in the blocking state, resulting in the loss of MLAG protocol messages. The application further maintains the stability of the system function implementation.

Embodiments of the present disclosure relate to efficient split management in virtual switches using spanning trees. A network device of a virtual switch is provided that includes a second network device and operates on a unified control plane. During operation, the network device maintains a link between its first port and a second port of a second network device. The first link is different from the second link for the virtual switch data traffic exchange. The network device runs a spanning tree protocol to place the first port and the second port in respective port states, the port states including a forwarding state and a blocked state. If the second link becomes unavailable, the network device determines that the virtual switch has split into a first segment including the network device and a second segment including a second network device. If the first port is in a blocked state, the network device suspends communication via the respective port of the first segment.