Huawei Technologies Co., Limited

Future Wei Technologies, Inc.

Jianfei He

Feng Li

Ruobin Zheng

Yizhou Li

Wei Fu

Xiaodong Li

Xingwang Zhou

Chaogang Lu

Yong Zhao Tang

Xingyue Quan

Guoyi Chen

Jie Dong

Robert Sultan

Bo Liang

Shuo Liu

Mingui Zhang

Yi Zhang

Fuyou Miao

Weiguang Wang

Yuxiang Wang

Huiying Xu

Xixiang Li

Zhusheng Deng

Stein Gjessing

Xuan Zhang

Xingque Quan

Hongxing Zhang

Zuoxiao Ma

Lingguang Kong

Qiaoling Wang

Chaoyang Ji

Junyi Zhang

Yuanming Zheng

A sequence number synchronization method includes a first network device sending a data packet including a first synchronization indication to a second network device, where the first synchronization indication is used to indicate the second network device and the first network device to perform a sequence number synchronization operation. The sequence number synchronization method further includes the first network device receiving a response packet from the second network device, where the response packet includes a second synchronization indication, and the second synchronization indication is used to indicate that the second network device has received the packet including the first synchronization indication.

Sequence number synchronization method and apparatus

This application discloses a communications method and related communications apparatus and system. The method includes recovering, by a first node, when detecting that a first packet is lost, the first packet according to a local recovery mechanism. The first packet is a packet obtained based on a packet sent by at least one first terminal to at least one second terminal, and the first node is a node on a network path between each first terminal and a second terminal communicating with the first terminal. The method further includes adding a first identification information related to local recovery, and sending the first packet. This application can reduce a transmission delay and improve transmission efficiency.

Communications method, apparatus, and system for recovering lost packets

A system and method for packet processing, the method being applied to a first network device and including sending a first packet to a second network device, where a control packet header of the first packet includes a first number, and the first number indicates a number of a packet that carries the first number and that is between the first network device and the second network device, and receiving a first acknowledgement packet from the second network device, where the first acknowledgement packet comprises an indication indicating whether the second network device receives the first packet.

Packet processing method and apparatus

An embodiment of a Network Virtualization Edge (NVE) device for transmitting packets receives a packet including a source address and a destination address. The NVE device obtains an active-active access configuration information list including a first entry and a second entry, where the first entry includes an identifier of a first active-active group, a Virtual Network Instance (VNI), and an identifier of the NVE device, and the second entry includes an identifier of a second active-active group, a VNI, and identifiers of at least two NVE devices that belong to the second active-active group. The NVE device obtains the VNI according to the identifier of the NVE device, searches for one active-active group corresponding to the VNI, selects a second NVE device from the at least two NVE devices; and encapsulates the packet using an identifier of the second NVE device and the VNI, and sends the packet.

Packet transmission method and apparatus

A method for binding a work Label Switch Path (LSP) with a protection LSP, including: transmitting a first message including binding information to a Path Merging Label Switching Router (PML) via a Path Switching Label Switching Router (PSL) so as to request for creating a protection LSP of the work LSP; the PML router assigning a label for the protection LSP based on the first message and returning a second message carrying the binding information; after receiving the second message, the PSL router binding the work LSP with the protection LSP based on the binding information, and transmitting a notification message including the binding information to the PML router; the PML router binding the work LSP with the protection LSP based on the binding information in the notification message.

Method for binding work label switching path and protection label switching path

An integrated cross-switching unit and a service scheduling method thereof are provided. The integrated cross-switching unit includes: a bus identification module, a cross-connecting module, a mapping/de-mapping module, an encapsulation/de-encapsulation module, and a packet scheduling module; the bus identification module identifies service source, transmits service from a line unit to the cross-connecting module and directly sends the data packets from the data service processing unit to the packet scheduling module to implement scheduling; the cross-connecting module implements TDM service cross-connecting, and transmits the data service of the service from the line unit to the packet scheduling module via the mapping/de-mapping module and the encapsulation/de-encapsulation module to implement scheduling. This solution integrates the cross-connecting function and switching function of TDM service and data service in the same unit, reducing system slots and realizing larger-capacity service scheduling.

Integrated cross-switching unit and service scheduling method thereof

A method for transporting data packets, a data network system and network nodes are provided. According to the present invention, subframes are classified according to their forwarding paths when entering a network from an ingress node; subframes with the same forwarding path are encapsulated into a multiframe; the multiframe is transported via intermediate nodes; and the multiframe is de-encapsulated into the original subframes at an egress node. According to the present invention, traffic to enter the network is processed at an edge node of a network, so that small data packets (subframes) are encapsulated into a large data packet (multiframe) for increasing a minimum data packet length, and the subframes are recovered from the multiframe when the traffic exits the network for reducing the burden of traffic processing in a transport network.

Method for transporting data packets, data network system, and network nodes

A method of rate-control for a group of ports in a communication network. Ramping is performed for allowed-rate of each of the group of ports, if sum of the ingress-rates of the group of ports is less than a given rate threshold; and adjusting is performed for allowed-rate of each of the group of ports, if sum of the ingress-rates of the group of ports is greater than or equal to the given rate threshold, such that the sum of allowed-rates of the group of ports is equal to the given rate threshold.

System for rate-control of aggregate-rate communication services

The present invention discloses a method for data forwarding used in label switching networks, with which, at the source node, sequence numbers are added to the data packets forming an original data flow to be forwarded according to the forwarding order, then the data packets are mapped to label switched paths (LSP) for forwarding; at the destination node, the data packets received from the LSPs are merged into the same data flow as the original data flow to be forwarded according to the order of the sequence numbers. Meanwhile, during the data forwarding in accordance with the invention, an alarm mechanism is used to detect a faulted LSP, and the mapping strategy is adjusted timely to avoid the massive loss of the data packets, which guarantees the security of the data forwarding to the greatest extent while a high bandwidth utilization ratio is ensured.

Method and system for data forwarding in label switching network

Embodiments of the present invention disclose a method of domain supervision in a label switched network, including: designating one or more OAM domains on an LSP in the label switched network, determining an ingress node and an egress node of each OAM domain, inserting in-domain OAM frames containing supervision information at the ingress node of each OAM domain, receiving and parsing the in-domain OAM frames by the egress node of each OAM domain, and managing an OAM domain according to the supervision information contained in an in-domain OAM frame of the OAM domain. Furthermore, embodiments of the present invention also disclose a method of domain protection in a label switched network through adding a detection frame, such as Connectivity Verification (CV) frame, Fast Failure Detection (FFD) frame or the like, into an in-domain OAM frame.

Method of domain supervision and protection in label switched network

This invention discloses a service scheduling unit and the method thereof, which performs scheduling for the packet service that comes from the line unit and the data service access processing unit in the digital communication system, and the service scheduling unit includes: a mapping module, a de-mapping module, an encapsulating module, a decapsulating module and a packet scheduling module. After entering the service scheduling unit, the services needing to be scheduled go through the mapping/de-mapping module and the encapsulating/decapsulating module, arrive at the scheduling module for final scheduling This method of scheduling the services can achieve the 1+1 or 1:1 protect function of the service scheduling module. The usage of this method can achieve different granularities of the mapping/de-mapping, different protocol encapsulating and can efficiently decrease the total cost of the system.

Service scheduling unit and a method thereof

The invention discloses a method for implementing link state passing-through in network, for informing the peer of link fault, including: the service device detecting whether there is a link fault in the network; in case of link fault, the service device transferring link fault information to peer service device with a control frame; in response to the control frame containing link fault information, the peer service device disconnecting the user's link and performing corresponding processes; the user at the faulty peer communicating with peer user through the spare network; when the link recovers to normal, the service device at the recovery peer sending a control frame containing link fault recovery information to peer service device to reestablish communication between the users on the link. The invention is capable of reducing extra overhead under normal network conditions as much as possible.

Method of achieving the network link status penetrate

A method for data traffic transmission on a synchronous digital network to overcome the inefficiency of the data packet transmission on the synchronous digital network equipment. The method includes, adding a RPR processing module after Ethernet interface in the equipment; through the RPR processing module, an uplink Ethernet frame from Ethernet interface being mapped to a RPR frame; through LAPS/PPP/GFP protocol, the RPR frame being mapped into the payload of a synchronous digital network; the volume and number of the VCs and total bandwidth of the RPR being configurable. When the RPR frame arrives at the destination node of the RPR, it is stripped from the RPR and recovered to its original Ethernet frame. The method and device transmit data service efficiently, and the total bandwidth of the RPR is adjustable and is statistically multiplexed.

Method of transmitting data service on synchronous digital network

The invention discloses a method for controlling Ethernet data flow on a synchronous digital hierarchy (SDH) transmission network. The method comprises: step a) setting a data buffer at receiving direction of a programmable logic array; and step b) setting a receiving high threshold-value and a receiving low threshold-value for the buffer. When applying the method, remote transmission of SDH facilities keeps the data flow control effective, so remote transmission of Ethernet data is reliable.

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Shenzhen, China

Jianfei He