53 results about "Label switching" patented technology

U-Turn detour paths, though the head-end router of a primary label switched path (LSP), are configured and used to enable fast failover to a secondary LSP, while avoiding reserving bandwidth (e.g., on links unused by primary and secondary paths) unnecessarily.

The invention discloses an air-space-ground network congestion control method based on deep reinforcement learning, which realizes rapid dynamic response and global resource optimization through distributed node cooperation and dynamic service rate adjustment. According to the method, modeling is carried out based on a multi-node agent Markov decision process, a composite reward function is designed, and strategy optimization algorithm training is driven by the composite reward function; a'centralized training-distributed execution 'framework is adopted in the framework, strategy network parameters are optimized in the centralized training stage, the service rate of each node is independently adjusted by each node based on local observation in the distributed execution stage, and global communication is not needed. Aiming at the characteristics of high dynamic topology and resource limitation of a satellite network, a label switching path is constructed by using an MPLS traffic engineering protocol, and link capacity fluctuation and satellite orbit movement can be dynamically adapted. According to the method, accurate queue control of air-space-ground node congestion control is realized, the throughput of the network is remarkably improved, and a reliable solution is provided for efficient congestion control of the air-space-ground network.

The invention discloses a multi-protocol label switching optimization method and device, equipment and a storage medium, and relates to the technical field of network communication, and the method comprises the steps: obtaining current network flow data and network state data; obtaining a bandwidth utilization rate, a link utilization rate and a network traffic type according to the traffic data of the network; generating optimization parameters based on the network state data, the bandwidth utilization rate, the link utilization rate and the network flow type, wherein the optimization parameters comprise a label allocation table, a target forwarding path and a bandwidth adjustment instruction; and optimizing the multi-protocol label switching network according to the optimization parameters. According to the invention, the optimization of the multi-protocol label switching protocol is completed through intelligent label management, the technical problems of resource waste and congestion delay are solved, and the efficiency and flexibility of the multi-protocol label switching network are improved.

Aspects of the subject disclosure may include, for example, a device, including: a processing system including a processor; a clock; and a memory that stores executable instructions that, when executed by the processing system, facilitate performance of operations of: advertising via Border Gateway Protocol (BGP) a capability as a precision timing protocol (PTP) master clock through an Internet Protocol (IP) / Multi-Protocol Label Switching (MPLS) network, wherein the advertising includes an IP address of the device; receiving a unicast signaling mechanism from a PTP client node in the network; and sending clock messages to the PTP client node responsive to accepting the PTP client node. Other embodiments are disclosed.

A method for establishing a temporal label switched path (T-LSP) implemented in a node in a network. The method includes receiving a path request including a time interval and a set of constraints; obtaining traffic engineering information from a first database; computing, by the node, a path satisfying the time interval and the set of constraints based on the traffic engineering information obtained; storing the time interval and the set of constraints in a second database; and instructing an ingress node of the temporal LSP to signal the temporal LSP in the network along the path computed at a start of the time interval identified in the path request and to tear down the temporal LSP at an end of the time interval identified in the path request.

The invention discloses an SDN (Software Defined Network) controller network domain division method based on an MPLS (Multi-Protocol Label Switching) network, which comprises the following steps: (1) MPLS configuration item resource static planning: carrying out static range division according to a hardware resource condition, the number of actually required domain division and an actual condition of an actual multi-department network management monitoring permission; (2) deploying controllers according to domains: the SDN controller obtains whole network topology data through equipment directly connected with the SDN controller, the equipment directly connected with each domain controller is different, and the controllers between the domains do not influence each other and work independently; (3) deploying network management software: each piece of network management software is only allowed to issue an instruction to the controller in the respective domain, and the network management software running in the network does not influence each other and independently works; and (4) realizing network domain division. According to the invention, in the SDN architecture, a domain-divided networking mode is provided for centralized networking, so that the requirements of multi-department network management monitoring or different services and authority are met, and the network stability and the operation and maintenance efficiency are improved.

The invention provides a network flow analysis method, device, equipment and medium, and the method comprises the steps: analyzing a packet header of any data packet, and when the packet header of any data packet is analyzed to a tunnel encapsulation layer protocol, if the tunnel encapsulation layer protocol is a multi-protocol label switching protocol, sending the packet header of any data packet to a network; the method comprises the following steps of: storing a first analysis result which comprises metadata extracted from header information of each layer of protocol which is analyzed at present when a label stack of a multi-protocol label switching protocol is analyzed and a protocol type identifier which cannot be analyzed exists in a current analysis position of the label stack of the multi-protocol label switching protocol is identified, and then returning to an initial analysis position of the label stack so as to obtain a second analysis result which comprises metadata extracted from header information of each layer of protocol which is analyzed at present; and determining a target analysis protocol from the protocol feature library, and performing analysis again from the initial analysis position to obtain a second analysis result, thereby determining a stream analysis result based on the first analysis result, the second analysis result and third analysis results of the remaining protocols. According to the embodiment of the invention, information loss in an analysis process can be avoided.

The application discloses a kind of security transmission and access method for hydropower station data, it is related to the security transmission and access field of hydropower station data, comprising: the application is by analyzing the service type of hydropower station data and equipment control level, dynamically add high, medium, low security level label, and according to security level label for hydropower station data preselect corresponding transmission path;Real-time acquisition quality index, when monitoring any quality index exception of transmission path, after generating path quality degradation event, priority ranking and screening are carried out to standby path, and data stream switching is carried out using multi-protocol label switching technology;By establishing user access frequency baseline, and real-time monitoring its access behavior to high security level data, dynamically implement access permission downgrade or additional authentication requirement, realize the real-time requirement of hydropower station data transmission, and the dynamic risk management of access control, effectively improve the real-time of hydropower station data whole process.

An embodiment of the present invention provides a method for notifying an associated path, a path calculation client, and a path calculation unit. The notification method includes: constructing a Path Computation Element Communication Protocol (PCEP) message according to an associated label switched path, where the PCEP message includes extended association identification information, and the extended association identification information is used to represent an association identification assigned to the associated label switched path, and the length of the extended association identification information is greater than 2 bytes; sending the PCEP message to the path calculation unit, so that the path calculation unit establishes or updates the association relationship information of the associated label switched path according to the extended association identification information. By carrying the extended association identification information with a length greater than 2 bytes in the PCEP message, the embodiment of the present invention solves the problem that the association identification exceeding the basic value cannot be transmitted between devices and controllers in practical applications.

A method to establish an optimized frame format used by a first compute node (21) acting as ingress PE and a second compute node (22) acting as egress PE in the transport of overlay ethernet traffic containing an IP payload from the source overlay endpoint attached to or hosted in the first compute node (21) to the destination overlay endpoint attached to or hosted in the second compute node (22) through a Multi Protocol Label Switching, MPLS, underlay network (2), where the frame format is a conventional MPLS tagged ethernet frame format, wherein an MPLS label stack is inserted between the ethernet header and the IP header of the overlay ethernet frame, where the single ethernet header carries the destination and source overlay Media Access Control, MAC, addresses when the frame was originated from the source overlay endpoint, where the MPLS header of the frame comprises a top label with the Label Switch Path, LSP, label towards the destination Provider Edge, PE, router, ie. egress PE, and a bottom label, e.g. an optimization MPLS label, holding information enabling the forwarding mechanism in the egress PE router to restore the original destination and source overlay MAC addresses.

The present invention discloses a congestion control method for air-space-ground networks based on deep reinforcement learning, which realizes fast dynamic response and global resource optimization through distributed node cooperation and dynamic service rate adjustment. This method is modeled based on the multi-node agent Markov decision process, designs a composite reward function, and uses it to drive the training of the policy optimization algorithm. The framework adopts a "centralized training - distributed execution" framework. During the centralized training stage, the parameters of the policy network are optimized, and during the distributed execution stage, each node independently adjusts the service rate of each node based on local observations without global communication. In view of the high-dynamic topology and resource-limited characteristics of satellite networks, the MPLS traffic engineering protocol is used to construct label-switched paths, which can dynamically adapt to link capacity fluctuations and satellite orbit movements. The present invention realizes accurate queue control for congestion control of air-space-ground nodes and significantly improves the throughput of the network, providing a reliable solution for efficient congestion control of air-space-ground networks.

The invention discloses a multi-network processing unit cooperative MPLS message processing method and system, the system at least comprises a first network processing unit located at an entrance and a second network processing unit located at an exit port, and the network processing units are sequentially connected through internal loopback ports; wherein the first network processing unit is used for identifying an MPLS (Multi-Protocol Label Switching) message and adding a custom mark and a traceability VLAN to the MPLS message; redirecting the MPLS message added with the custom mark and the traceability VLAN to an internal loopback port, and enabling the MPLS message to finally reach a second network processing unit after loopback; the second network processing unit is used for further processing according to the custom mark in the MPLS message, including stripping and complementing the label and / or modifying the traceability VLAN; and redirecting the processed MPLS message to a final output port. According to the method, the function limitation and the performance bottleneck of a single processing unit are effectively overcome, and the efficient and flexible forwarding of the complex MPLS flow is ensured.

Mobile User Plane (MUP) over Multi-Protocol Label Switching (MPLS) is implemented over an access an access network connecting a provider edge router to a gateway router, the gateway router being connected to a base station having a wireless connection to user equipment (UE). Traffic between the provider edge router and the gateway router is routed according to both of multi-protocol label switching (MPLS) protocol and mobile user plane (MUP) protocol. An MUP-controller may discover the UE, base station, and corresponding tunnel information and transmit this information to the provider edge router and gateway router, which then create an MPLS label and routing entries to implement MUP.

A network device may receive an MPLS packet destined for a destination via a label-switched path (LSP), and may determine whether to apply a first special purpose label (SPL) option or a second SPL option for a label stack of the MPLS packet. The network device may apply, when the first SPL option is determined to be applied, one of a first type of the first SPL option for the label stack via a policy data indicator (PDI) and policy data (PD), or a second type of the first SPL option for the label stack via the PDI and the PD. The network device may forward the MPLS packet to a hop of the LSP based on the first type of the first SPL option or the second type of the first SPL option applied to the MPLS packet.

The embodiment of the invention provides a container communication method, electronic equipment and a medium, and the method comprises the steps: obtaining the destination address information of a to-be-forwarded IP message in a source container, and determining a forwarding label according to the destination address information; packaging the IP message according to the forwarding label to obtain an MPLS (Multi-Protocol Label Switching) message; and sending the MPLS message to a next hop node, so that the next hop node sends the MPLS message to the destination container according to the forwarding label. Therefore, the IP message of the source container is packaged into the MPLS message and sent to the next hop node, so that the limitation of the IPACL set in the subsequent node including the next hop node on the IP message of the source container is reduced, the communication capability between the containers is improved, and the condition of abnormal communication between the containers caused by the IPACL of the node is reduced.

In one embodiment, a wireless access point receives, from a mobile system, a broadcast beacon that includes a roaming notification indicating that the mobile system intends to roam to the wireless access point. The wireless access point allocates, after receiving the broadcast beacon from the mobile system, an orthogonal frequency-division multiple access resource unit for use by the mobile system. The wireless access point sends a trigger message to the mobile system that includes an indication of the orthogonal frequency-division multiple access resource unit. The wireless access point performs, after sending the trigger message, a handoff exchange with the mobile system using the orthogonal frequency-division multiple access resource unit to attach the mobile system to the wireless access point.

Interworking between different layer two (L2) medias using network tunnels is provided by receiving, at a virtual gateway network element (GNE), a packet from a first L2 media type network for transmission to a second L2 media type network under the control of a different entities, wherein the first and second L2 media type networks are incompatible for direct packet transmission; removing, at the virtual GNE, ethernet encapsulation from the packet; re-encapsulating, at a network device located between the virtual GNE and a packet network, the packet in a multi-protocol label switching (MPLS) encapsulation; forwarding, over the packet network, the packet from the network device to a digital communication channel (DCC) associated with the second L2 media type network; replacing, at the DCC, the MPLS encapsulation with a link access protocol (LAP) encapsulation; and transmitting the packet encapsulated with the LAP encapsulation to the second L2 media type network.

U-Turn detour paths, though the head-end router of a primary label switched path (LSP), are configured and used to enable fast failover to a secondary LSP, while avoiding reserving bandwidth (e.g., on links unused by primary and secondary paths) unnecessarily.

The invention discloses a traffic management method, device and equipment and a storage medium, and relates to the technical field of computer network traffic management and optimization, and the method comprises the steps: obtaining a switch configuration address, a switch configuration path and a to-be-sent data packet; locking a mapping relation between each switch port and corresponding target equipment based on the switch configuration address, and determining a static address table; setting a routing path and a priority corresponding to each data flow based on the switch configuration path, and determining a static routing table; switching a network label corresponding to the to-be-sent data packet based on the static address table and the static routing table, and determining label switching information; and forwarding the to-be-sent data packet along the forwarding path identified by the label switching information to complete routing flow management. According to the invention, the static address table and the static routing table are utilized to accurately control the data flow and select the optimization path, network label switching is carried out to realize rapid and efficient forwarding, and the flow optimization efficiency is improved.

The invention provides a label switching-oriented credit value flow control method, which comprises the following steps of: performing two-tuple marking of forwarding equivalence classes and tunnel IDs at an ingress router, and binding a corresponding credit value for each forwarding equivalence class; when it is detected that the forwarding equivalence class carries out traffic transmission, controlling the credit value corresponding to the forwarding equivalence class to be reduced from an initial value to zero at a preset sending slope so as to prevent traffic transmission, and then controlling the credit value to be increased from zero to the initial value at a preset idle slope so as to recover traffic transmission; wherein the sending slope is the slope of the credit value falling process along with the time, and the idle slope is the slope of the credit value rising process along with the time. Therefore, the invention can effectively prevent a single service from occupying excessive bandwidth, and optimize fair distribution of network resources.

The invention discloses a method and equipment for forwarding a multi-protocol label path message. The method comprises the following steps: receiving a packaged MPLS (Multi-Protocol Label Switching) message with an inter-chip communication head through a stacking port; a next hop MPLS label is packaged in the MPLS message; identifying a local port corresponding to a virtual outbound interface applied by an opposite end carried by the inter-chip communication head; a communication head between the chips is peeled off; and applying for a local port corresponding to the virtual outbound interface through the opposite terminal, and sending the MPLS message.

This present disclosure describes path probe methods and devices. The methods comprise receiving a first path probe packet; establishing a first association according to link information in the first path probe request packet and a path label of a network path to be probed; determining a third association based on an IP address in the first path probe packet and the path label of the network path to be probed. The IP address includes an IP address of an adjacent network node of the first network node, and a third association includes an association of the path label with the IP address of the adjacent node. The path probe method may reduce system overhead. In the transmission process, the number of network nodes may also be set according to needs. An IP overlay network based on label switching is realized.

The invention discloses an openstack-based MPLS (Multi-Protocol Label Switching) label dynamic allocation implementation method, and relates to a cloud computing network technology. The method comprises the following steps: establishing a label switching path (LSP), and distributing and managing an MPLS label: updating local MPLS label mapping information and maintaining a label mapping relation through a cloud computing node according to an LDP message, taking the cloud computing node receiving an IP data packet sent by a virtual machine as an entry node, performing MPLS label packaging on the IP data packet through the entry node to form an MPLS packaging data packet, and sending the MPLS packaging data packet to the virtual machine; the method comprises the following steps: sending an MPLS packaged data packet to an intermediate node through an ingress node, performing label search on the MPLS packaged data packet through the intermediate node, switching an MPLS label distributed by the ingress node into an MPLS label of a destination node, forwarding the MPLS packaged data packet to the destination node, receiving the MPLS packaged data packet through the destination node, removing the MPLS label of the MPLS packaged data packet, and forwarding the MPLS packaged data packet to the intermediate node. And recovering the IP data packet, and forwarding the IP data packet to the target virtual machine according to the IP header information.

Segment tracking routing for segment routing traffic engineering is described. For example, an ingress device includes one or more processors, operatively coupled to a memory, the one or more processors configured to: in response to a request to verify connectivity of a segment routed LSP, configure a FEC stack specifying a stack of segment routed labels of the segment routed LSP; for each of one or more devices identified from the FEC stack: generate a respective MPLS connectivity request packet for a respective device identified from an outermost FEC of the FEC stack; send the MPLS connectivity request packet to the respective device; receive an MPLS connectivity response packet verifying connectivity of the respective device; and in response, update the FEC stack by removing the outermost FEC of the FEC stack that identifies the respective device.

U-Turn detour paths, though the head-end router of a primary label switched path (LSP), are configured and used to enable fast failover to a secondary LSP, while avoiding reserving bandwidth (e.g., on links unused by primary and secondary paths) unnecessarily.

The application discloses a pre-re-routing method based on an extended OSPF protocol, comprising the following steps: extending the OSPF protocol, including extending a link state advertisement (LSA) and optimizing a constrained shortest path first (CSPF) routing algorithm, so as to calculate a transmission route according to a service requirement; using an RSVP-TE protocol to establish a label switched path (LSP) carrying a remaining validity time; based on the remaining validity time of the LSP, triggering a pre-re-routing strategy by comparing the remaining validity time with a remaining transmission time of the service and a preset time threshold, establishing a new LSP before an old LSP is interrupted after triggering, and switching the service transmission to the new LSP; and the preset time threshold is set to be greater than a longest time required for LSP calculation and establishment in a network. The application can solve the problems of diversified QoS requirements in a complex service scenario and service transmission interruption caused by predictable interruption of an inter-satellite link due to relative motion between satellites or a sun eclipse.

The invention discloses a secure transmission and access method for hydropower station data, which relates to the field of secure transmission and access of hydropower station data, and comprises the following steps: dynamically adding high, medium and low security level labels by analyzing the service type and the equipment control level of the hydropower station data; pre-selecting a corresponding transmission path for the hydropower station data according to the security level label; quality indexes are collected in real time, when it is monitored that any quality index of a transmission path is abnormal, after a path quality degradation event is generated, priority ranking and screening are conducted on standby paths, and data flow switching is executed through the multi-protocol label switching technology; by establishing a user access frequency baseline, monitoring the access behavior of the user to high-security-level data in real time, and dynamically implementing access permission degradation or additional authentication requirements, the real-time requirement of hydropower station data transmission and the dynamic risk management of access control are realized, and the real-time performance of the whole process of hydropower station data is effectively improved.

According to the transmission method, labels to be used at the failure occurrence are previously and individually set to links in respective directions among all nodes on the one directional link connecting between adjacent nodes basis, and when a failure occurs, a failure notifying message is sent out onto a same directional ring from a termination node of a failed block, to be sequentially transferred to each downstream node, and a label table for connecting the links in cooperative with the reception of the failure notifying message is created in each node, and also, a bypassing path is formed by turning back the rings at both end nodes of the failed block. Thus, in a ring network of label switching system, it becomes possible to easily perform the label table management and also to set a bypassing path in a short time at the failure occurrence.

The technical scheme of the invention discloses a method capable of enhancing data locality of a ray packet and a sampling point in a neural rendering process. The invention provides two key scheduling mechanisms, namely an RP reordering method based on voxel tags and a sampling point out-of-order transmitting method based on an on-chip feature cache hit condition, and designs a matched hardware architecture module. By means of the RP reordering method based on the voxel labels, the number of RP processed by unit voxel label switching can be increased, RP-level data aggregation processing is achieved, repeated loading of the same voxel data is reduced, and the cache hit rate is increased. According to the sampling point out-of-order emission method based on the on-chip feature cache hit condition, out-of-order scheduling can be achieved, EMA delay is hidden, and the throughput rate is increased to 8.45%.