Zte Corporation

Xi'an Zhongxing New Software Co., Ltd.

Junhui Zhang

Bin Wang

Bo Wu

Min Xiao

Liang Xia

Li He

Hongguang Zhao

Kai Chen

Yu Wang

Lin Wen

Xihua Fu

Zhui Guo

Kexin Tang

Yanjie Zhao

Delong Wang

Dongjia Liu

Provided are a method and device for implementing QoS in an OpenFlow network. The method includes that: for a packet entering an OpenFlow switch, when a flow table is successfully matched, an instruction which is used for calling a scheduler and adding the packet into a specified queue in the scheduler is executed; and under the triggering of the instruction, queue scheduling is managed by using the scheduler. By using the technical means provided by the disclosure, the technical problem in related art that the OpenFlow switch cannot implement Hierarchical QoS (HQoS) is solved, so that the OpenFlow switch may implement both single-layer QoS and HQoS.

Method and device for implementing QoS in OpenFlow network

A method and apparatus for reporting a feature of an OpenFlow switch are provided. The method includes: when the OpenFlow switch learns that an OpenFlow controller needs to query for port information, reporting port group identifiers of port groups, to which each port of the OpenFlow switch or each port to be queried by the OpenFlow controller belongs, to the OpenFlow controller, herein the port groups are obtained by grouping ports with different features in the OpenFlow switch based on one or more feature types, and each of the port groups has a port group identifier.

Method and device for reporting OpenFLow switch capability

The present document discloses a synchronization method, herein the method includes a controller determining synchronization link topology information according to physical link topology information of the synchronous network and synchronization information of a synchronous node in the synchronous network; the controller generating a synchronization rule of the synchronous node according to the synchronization link topology information; and the controller transmitting the synchronization rule and/or a request message to the synchronous node in the synchronous network according to the synchronization link topology information. The present document further discloses a controller, a synchronous node, a synchronous network, and a storage medium.

Synchronization method, controller, synchronization node, synchronous network, and storage medium

A cross-domain clock synchronization method, device and system and a computer storage medium, which are applied to a cross-domain synchronization network. A Path Calculate Element (PCE) exchanges a clock synchronization type with a controller participating in clock synchronization path calculation to match the clock synchronization type supported by the PCE and the controller; the PCE acquires physical topological information of the cross-domain synchronization network; the PCE acquires synchronization information of synchronization nodes of the cross-domain synchronization network and/or hop number information between the synchronization nodes; the PCE calculates a clock synchronization path of the cross-domain synchronization network according to the physical topological information as well as the synchronization information and/or the hop number information; and the PCE sends the clock synchronization path to the controller according to the physical topological information to enable the controller to send a clock synchronization instruction to synchronization nodes on the clock synchronization path.

Cross-domain clock synchronization method, device and system and computer storage medium

Disclosed is a method and system for encapsulating a flow identifier. The method for encapsulating a flow identifier comprises: in the case where flow table matching is successfully performed on a packet, an OpenFlow switch adds a flow identifier to the packet; and the OpenFlow switch invokes a pre-saved function entry to assign a value to the flow identifier, so as to complete the encapsulation of the flow identifier. The disclosure achieves the effect of enabling an OpenFlow network node to take a hash calculation result of some fields of an original packet before encapsulation as the assignment of a new added flow identifier, which is required by the encapsulation of the flow identifier.

Method and system for encapsulating flow identifier

The present disclosure discloses a method and device for calculating a network path. Wherein, the method includes that: a network control node calculates a forwarding path from a source node to a destination node according to capability information of a forwarding node and a constraint condition. By the method, correctness of calculating the SDN path and network applicability may be improved.

Method and device for calculating a network path

Disclosed are a method and a device for detecting a fault in a synchronization link. The method includes: setting one or more reference nodes corresponding to a node to be detected (); when the node to be detected starts a detection function, acquiring reference time from the one or more reference nodes and acquiring synchronization time from a synchronization path (); and determining, by the node to be detected, whether there is a fault in the synchronization link between the node to be detected and a Grandmaster Clock (GM) node by using all the reference time and the synchronization time ().

Method and device for detecting fault in synchronization link

Disclosed are a time synchronization method and system. The method comprises: an NEand the upstream nodes of the NEare classified into the first level, and the downstream nodes of the NEare classified into the second level, where the first level priority of the first level is higher than the second level priority of the second level; an NEconnected to the NEthrough a PTP synchronization link in the downstream node receives a first device priority of the NEand the first level priority from the NE; and after the NEreceives the second device priority of an NEand the second level priority sent by the NEin the downstream nodes which is connected to the NEthrough the 1PPS+TOD synchronization link, determines that a clock parameter of the NEis optimal, and synchronizes the local clock to the NE

Time synchronization method and system

A method and device for implementing a compensation for an asymmetry delay of a 1588 link are provided. The method comprises: measuring and calculating a value of an asymmetry delay of the 1588 uplink/downlink; performing an asymmetry delay compensation when the value of the asymmetry delay exceeds a set synchronization offset range; and continuing a normal 1588 time synchronization if the value of the asymmetry delay does not exceed the set synchronization offset range; and implementing the automatic compensation for the asymmetry delay of the 1588 link. The above-mentioned scheme can correct the asymmetry delay automatically, and ensure the quality of 1588 time synchronization.

Method and device for implementing automatic compensation for asymmetric delay of 1588 link

An access method and apparatus for a MPLS L2VPN are described. The method includes that a customer side and a network side sends their respective message to an operator routing equipment, set the access types of the messages to be mapped to virtual ports, and respectively allocate their respective Source Virtual Ports (SVP) and Destination Virtual Ports (DVP) to each access, and establish a data forwarding channel of the MPLS L2VPN by respectively establishing connection from their own SVP to the DVP of the opposite side. With the disclosure, various access modes are uniformly mapped to virtual ports, and then the MPLS L2VPN is accessed; furthermore, forwarding can be performed based on a Virtual Switch Interface (VSI) and virtual ports.

Access method and apparatus for multi-protocol label switching layer 2 virtual private network

A method, system and apparatus for single-fiber bidirectional ring network protection are disclosed in the present invention, wherein, one working path ring between various nodes in the single-fiber bidirectional ring network shares one sharing protection channel using a set wavelength, and when a fault occurs in a working path between certain two nodes, the method includes: controlling sharing protection apparatuses of a receiving end node and a transmitting end node of the failed working path to switch from a primary port to a corresponding standby port, controlling an intermediate node in the sharing protection channel corresponding to the working path to enable a standby port of the corresponding sharing protection apparatus, and establishing the sharing protection channel corresponding to the working path; transmitting a service signal carried in the failed working path through the newly established sharing protection channel.

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Shenzhen, China

Junhui Zhang