Abstract: A method and a system for exercising policy control, a PCEF, and a PCRF are provided, which can solve the problem that no policy control can be exercised over application service flows without an application function (AF). The method includes of the following steps: a PCRF receiving information about an application event sent by a PCEF; and the PCRF generating a control policy for a service flow of the application according to the information about the application event, and delivering the control policy to the PCEF. In the present invention, the PCEF sends the obtained information about the application event to the PCRF, so that the PCRF can generate a control policy according to policy contexts including the information about the application event and the like, so as to exercise an effective policy control over the QoS guarantee, charging and gating of the service flow.

Abstract: Embodiments of the present invention provide a method for processing information, a forwarding plane device and a control plane device. The method includes: receiving a data packet, and extracting the data packet's characteristic information; searching for context information corresponding to the data packet's characteristic information; buffering or discarding the data packet if the context information is not found; and sending an event reporting message to a gateway control plane device, wherein the event reporting message carries the data packet's characteristic information, so that the gateway control plane device acquires the context information corresponding to the data packet's characteristic information. forwarding of the data packet to the greatest extent.

Abstract: A method and a system for exercising policy control, a policy and charging enforcement function (PCEF), and a policy control and charging rules function (PCRF) are provided, which can solve the problem that no policy control can be exercised over application service flows without an application function (AF). The method includes of the following steps: a PCRF receiving information about an application event sent by a PCEF; and the PCRF generating a control policy for a service flow of the application according to the information about the application event, and delivering the control policy to the PCEF.

Abstract: Embodiments of the present invention disclose a packet processing method, a forwarder, a packet processing device, and a packet processing system that are applicable to a control and forwarding decoupled architecture including a forwarder and a controller. The method includes: acquiring, by the forwarder, packet reporting control information including a reporting control indication and a control threshold; and stopping, by the forwarder according to the reporting control indication in a case in which a control parameter reaches or exceeds the control threshold, sending a packet reporting message related to one flow.

Abstract: Embodiments of the present invention provide a method for processing information, a forwarding plane device and a control plane device. The method includes: receiving a data packet, and extracting characteristic information of the data packet; searching for context information corresponding to the characteristic information of the data packet; buffering or discarding the data packet if the context information is not found; and sending an event reporting message to a gateway control plane device, wherein the event reporting message carries the characteristic information of the data packet, so that the gateway control plane device acquires the context information corresponding to the characteristic information of the data packet. In this way, the gateway forwarding plane device can acquire context information to the greatest extent under the condition that the context information is lost, thereby ensuring accurate forwarding of the data packet to the greatest extent.

Abstract: The present invention discloses a protocol processing method applied when control is decoupled from forwarding, a control plane device, and a forwarding plane device. The method includes: causing a control plane device to send an indication to a forwarding plane device according to a processing manner of a packet service processing protocol, and to deliver a negotiation parameter of the packet service processing protocol to the forwarding plane device; and causing the control plane device to receive a negotiation result of the packet service processing protocol, and to create a data path between a user equipment and a network device. The negotiation result is uploaded by the forwarding plane device and obtained according to information that includes the negotiation parameter of the packet service processing protocol.

Abstract: Embodiments of the present invention provide a switch, a controller, a system, and a link quality detection method, and pertain to the field of network technologies. In the present invention, the controller determines a detection path, and controls each switch on the detection path to obtain a detection packet, so that after determining that the obtained detection packet matches a prestored flow table entry, each switch adds OAM information to the successfully matched detection packet; and the controller obtains a termination detection packet, and determines link quality according to the termination detection packet. Each switch on a detection path does not need to use a corresponding link quality detection protocol to detect link quality, and only needs to add OAM information to an obtained detection packet. In this way, not only a structure of each switch can be simplified, but also operations of each switch are simplified.

Abstract: Embodiments of the present invention provide a charging information processing method and a gateway device. The method includes sending, to a gateway forwarding plane, a charging information identification set used for identifying charging information, saving first charging information sent by the gateway forwarding plane, where the first charging information carries a first charging information identification, which is an element in the charging information identification set, receiving second charging information sent by the gateway forwarding plane and saved by the gateway forwarding plane, where the second charging information carries a second charging information identification, which is an element in the charging information identification set, and combining the first charging information and the second charging information according to the first charging information identification and the second charging information identification.

Abstract: Embodiments of the present invention provide a QoS control method and a device for SDN. A control plane device includes: a determining unit, configured to determine a flow entry, where the flow entry includes QoS information, the QoS information is used to indicate a QoS processing rule, the QoS processing rule includes a QoS parameter, and the QoS processing rule is used to instruct to perform QoS control on a data packet according to the QoS parameter; and a sending unit, configured to send the flow entry to a forwarding plane device, so that the forwarding plane device obtains the QoS processing rule, and performs QoS control on a target packet according to the QoS parameter in the QoS processing rule, where the target packet is a data packet that matches the flow entry.

Abstract: Embodiments of the present invention provide a method and an apparatus for controlling a service data flow. The method includes: acquiring, by a controller, index information related to a UE, where the index information includes at least a user information index, a PDN connection index, a bearer index, and a service data flow table index that are related to the UE; sending, by the controller, the index information to a forwarder by using an entry notification message; when a first control event of a service data flow is triggered, acquiring, by the controller, a first instruction index according to the first control event, where the first instruction index includes at least one type of the index information related to the UE; and sending, by the controller, the first instruction index to the forwarder by using first control signaling.

Abstract: Embodiments of the present invention relate to a method and a device for processing a communication path. The method includes: obtaining a path processing parameter from local configuration information or from a control layer device, obtaining path information and/or a restarting counter parameter from the control layer device; increasing a path with an opposite-end device when the path information is of increasing a path, identifying the state of the path and/or the state of the opposite-end device using the path processing parameter and/or the restarting counter parameter the opposite-end device; reporting the fault state of the path and/or the reset state of the opposite-end device to the control layer device when the path fails and/or the opposite-end device is reset, releasing sessions on the failed path and/or on a path connected with the reset opposite-end device.

Abstract: Embodiments of the present invention relate to a method and a device for processing a communication path. The method includes: obtaining a path processing parameter from local configuration information or from a control layer device, obtaining path information and/or a restarting counter parameter from the control layer device; increasing a path with an opposite-end device when the path information is of increasing a path, identifying the state of the path and/or the state of the opposite-end device using the path processing parameter and/or the restarting counter parameter the opposite-end device; reporting the fault state of the path and/or the reset state of the opposite-end device to the control layer device when the path fails and/or the opposite-end device is reset, releasing sessions on the failed path and/or on a path connected with the reset opposite-end device.

Abstract: An ARP implementation method, a switch device, and a control device are disclosed. The method includes: receiving, by a switch device, an ARP packet; sending, by the switch device, an information reporting message including the ARP packet to a control device; and implementing, by the switch device, the ARP according to a MAC address included in an information delivery message sent by the control device, where the information delivery message is a message sent by the control device according to the information reporting message.

Abstract: A method includes receiving, by an ingress network element, a data packet, wherein an ingress flow entry is stored in the ingress network element. The ingress flow entry comprises flow description information and a processing network element indication, where the flow description information matches the data packet, and the processing network element indication is used to indicate a processing network element that processes the data packet after the ingress network element. The method further includes sending, by the ingress network element, the data packet to the processing network element according to the ingress flow entry, so that the processing network element performs context processing on the data packet.

Abstract: The present invention provides a packet processing method and an apparatus. The method includes: determining a to-be-installed flow entry and packet sending information; and sending, to a switch, a flow entry installation message carrying the to-be-installed flow entry and the packet sending information, so that the switch obtains the to-be-installed flow entry and the packet sending information from the flow entry installation message, installs the flow entry, and sends a packet according to the packet sending information.

Abstract: Embodiments of the present disclosure provide a packet processing method, a DPI network element and a DPI device. The method includes: determining, according to a packet feature of a first packet of a service flow, that a first deep packet inspection DPI device is used for performing DPI on the first packet, where DPI needs to be performed on the first packet; sending a first DPI request to the first DPI device, wherein the first DPI request includes all or part of contents of the first packet; and receiving a first DPI response that is sent by the first DPI device according to the first DPI request, wherein the first DPI response includes DPI result. The packet processing method, the DPI network element and the DPI device of the embodiments of the present disclosure can realize support for a network environment deployed with multiple DPI devices.

Abstract: The present invention discloses a method for processing an address resolution protocol message, a switch, and a controller. The method includes: receiving, by a switch, a flow rule that corresponds to an ARP message and that is sent from a controller; and constructing, by the switch, an ARP message according to the received flow rule, and sending the ARP message, where the flow rule includes: a match rule that corresponds to an ARP message and an action set that corresponds to an ARP message. According to the present invention, ARP-mechanism-based interaction with an external device can be implemented.

Abstract: A service processing method, a service processing system, and a PCRF entity are disclosed to overcome this defect in the prior art: The prior art is unable to handle services discriminatively according to the policy context information when different services require the same QoS level. The method includes: receiving bearer priority information from a PCRF entity, where the bearer priority information includes: bearer priority information of a service data stream, bearer priority information of an IP-CAN session, and/or bearer priority information of an IP-CAN bearer; and handling services according to the bearer priority information. In the embodiments of the present disclosure, the policy context information is converted into bearer priority information so that the PCEF handles services according to the bearer priority information. In this way, different services that require the same QoS level are handled discriminatively according to the policy context information.

Abstract: Embodiments of the present invention relate to the field of communications technologies and disclose a data flow processing method, a device, and a system, thereby solving a problem of operation interruption caused because a switch device is incapable of processing a corresponding user packet by using a received flow entry that is sent in advance by a control device, and improving working efficiency between network devices. The method includes: sending a request message to a control device, where the request message includes an action parameter requested by a switch device, and a to-be-processed packet or an identifier of a to-be-processed packet; receiving packet processing information that is sent according to the request message by the control device; and executing, according to the packet processing information, an operation corresponding to the to-be-processed packet. The embodiments of the present invention are applied in communications application technologies.

Abstract: Embodiments of the present invention provide a method for configuring a switching device, wherein the method includes: setting a first flow entry in at least one flow table, where the first flow entry includes a match field, the match field is used for designating information that needs to be matched, and instructing the switching device to perform matching between a value of information that is of a received packet and needs to be matched and a first field of each record in a database, to obtain a first record matching the packet, where each record in the database includes the first field, and the first field is used for denoting a designated value of the information that needs to be matched. The present invention reduces a quantity of flow entries.