560 results about "Port forwarding" patented technology

Provided is a method and apparatus for facilitating push communication from a first network to a target device of a second network, the second network comprising a packet service network such as a GPRS core network. A private IP address, usable for addressing the target device when the packet service network is in an activated state with respect thereto, is retained. Upon receipt of a first message from the first network, indicative of a push communication for the target device, the packet service network is disposed into the activated state, and a second message, addressed to the private IP address, is transmitted. The second message may be generated by a NAT configured to implement micro-port forwarding. The second message may be generated by a representative device of the second network, configured to receive the first message via a NAT in response to a query generated by the representative device.

A tunneling infrastructure provides TCP port forwarding from a client running on a client network to a server running on a server network, where the client and servers can be behind separate firewalls. To tunnel TCP, a "server socket" capability is provided, allowing the client to establish a connection to the server across the tunnel. A direct, port forwarding scheme is implemented. The client side is the driver for the tunnel operation. The client maintains multiple URL (Universal Resource Locator) connections to the server side tunnel allowing data to flow in both directions. The client's SendToServer connection(s) use the HTTP POST method to send data from the client side to the server side. The client's ReceiveFromServer connection(s) use the HTTP GET method, and allow data to be sent from the server side to the client side.

Exemplary embodiments are directed to deterministic data transmission of real-time operational data in Highly available, Seamlessly Redundant (HSR) ring-type communication networks with at least a master node, a source node, and a destination node. Each node can include first and second communication ports connected to a respective first and second neighbouring node of the communication network, to receive a frame via the first communication port, and to forward the received frame via the second communication port. The master node sends a first and a second redundant frame or empty data packet to its first and second neighbouring node, respectively. Upon reception of the two redundant frames, the source node inserts process data into a predetermined and dedicated field of each frame. Each one of the two loaded redundant frames is instantaneously and individually forwarded to the first and the second neighbouring node of the source node, respectively. The destination node extracts the process data from the first arriving loaded redundant frame of the pair.

An embodiment of the invention provides an address resolution protocol (ARP) message forwarding method, an exchanger and a controller. The ARP message forwarding method includes: a first exchanger receives ARP messages; the first exchanger sends the ARP messages to the controller in the network to lead the controllers to construct response messages containing forwarding port messages according to the ARP messages; the first exchanger receives the response messages sent by the controller; and the first exchanger forwards the response messages to a corresponding port according to the forwarding port messages. The controller provides ARP service for a main machine of the network managed by the controller, and therefore network efficiency can be improved and network bandwidth can be saved.

The invention aims at providing a server which manages address information for servers subordinate to a port-forwarding relay device (router) thus allowing an access from a wide area network. A representative server issues a request to assign a default port number to a router. The port management unit of the representative server registered to a default port number acquires the IP address of the router (wide area network address) and port mapping information (port number information on other equipment) from the router and retains the information acquired. In case it is determined that an access from the wide area network is first directed to a representative server, the representative server displays in a list the port number information on the accessing terminal in response to an access from the wide area network. This allows an external user to readily access desired equipment. The representative server periodically makes a port mapping information to the router and updates the information.

A network apparatus for forwarding multicast packets to a plurality of multicast receivers includes a switch and a main module. The switch includes a plurality of ports for connecting the plurality of multicast receivers. The main module includes an Internet group management protocol (IGMP) snooping module and a forwarding module. The IGMP snooping module creates several virtual local area networks (VLANs) based on the possible combinations of the plurality of ports, snoops IGMP report messages, determines port identifiers (IDs) of source ports of the IGMP report messages, and establishes a forwarding table according to the VLANs, the IGMP report messages, and the port IDs. The forwarding module adds VLAN tags to multicast packets according to the forwarding table. The switch forwards the multicast packets with the added VLAN tags to corresponding ports according to the VLAN tags. A method for forwarding multicast packets is also disclosed.

The invention discloses method and device for controlling congestion of an Ethernet. The method comprises the following steps of: closing an ingress port of core network equipment with the function of congestion detection to trigger a flow control PFC (Power Factor Correction) mechanism based on priority through a threshold; detecting whether a message forwarded by the ingress port is a CNM (Congestion Notification Message) or not; generating a PFC message according to the CNM if the message forwarded by the ingress port is the CNM; and forwarding the CNM through the ingress port and notifying the opposite-end equipment of suspending the data transfer of a corresponding queue according to the PFC message. With the technical scheme of the invention, the congestion problem can be quickly and effectively solved fundamentally.

A method operates at the data link level. Each bridge associates, during a guard time, the port through which a frame is first received with a source MAC address until a unicast reply frame confirms the matching two-way path between the source and destination addresses. Any frame from the same source received through another different port is discarded. Each bridge forwards the received broadcast frames through the rest of the ports, except those involving prohibited (down-up) turns, and deviates (or optionally returns) the unicast frames with an unknown or aged destination address through the spanning tree. The protocol can operate with encapsulation in the border bridges or without encapsulation, using in this case the replacement of universal MAC addresses in the border bridges with local MAC addresses. The establishment and control of paths can optionally be performed proactively by the border bridges, especially the bridges connected to servers.

The invention provides a flow forwarding method and a flow forwarding device. The method is applied to an Openflow Controller in an OpenFlow network and comprises the following steps: A, determining exchange equipment for simultaneously bearing N equivalent paths in the OpenFlow network; B, notifying the exchange equipment of creating a flow distribution group, adding an output port corresponding to each path in the N equivalent paths on the exchange equipment into the flow distribution group; and C, distributing a first OpenFlow meter corresponding to the flow distribution group to the exchange equipment, wherein the first OpenFlow meter contains destinations of the N equivalent paths and is used for the flow distribution group as the output port, so that when the exchange equipment forwards the flow to the destinations, the flow distribution group in the first OpenFlow meter is used as the output port to forward the flow.

Systems and methods are disclosed for performing operations on a host system with one or more virtual machines without persistently storing an agent or daemon thereon. In certain examples, a management server is configured to inject dependencies, such as binary data, over a network to the host system for performing a requested operation. For instance, systems and methods can establish a secure shell (SSH) port forwarding connection through which dependencies stored on the management server are injected into a service console of the host system. The injected dependencies can then be executed and / or used to perform the requested operation, such as a backup or compression operation on virtual machine data. Once the requested operation has completed, the injected binaries are preferably removed from the host system so as to conserve system resources.

The invention discloses a multicast data forwarding method and a device thereof, applied to a VPLS (Virtual Private LAN Service) system containing PEs (Provider Edge). The method comprises the following steps of: acquiring multicast addition information by a PE through monitoring a group management packet, establishing a multicast forwarding table entry and submitting the multicast addition information, wherein the multicast forwarding table entry comprises a multicast address and a corresponding output port which is a port at the AL (Access Link) side of multicast virtual connection or localPE. When the PE receives the multicast data sent to the multicast address, the multicast data is forwarded through the output port corresponding to the multicast address according to the established multicast forwarding table entry. The invention can be adopted to reduce the link bandwidth occupied by forwarding the multicast data.

The application provides a message forwarding method and a piece of message forwarding equipment. The method comprises the following steps: stacking control slots and stacking port extension slots are selected from a stacking system, wherein the stacking control slots are used as a switching and forwarding center of the stacking system and are stacked in an annular or chain mode, and the stacking port extension slots are the remaining slots in the stacking system except the stacking control slots; any of the stacking control slots locally creates cross-equipment aggregation group ports connected with the stacking port extension slots, wherein slot ports of the cross-equipment aggregation group ports are downlink secondary stacking ports, connected with the stacking port extension slots, on the stacking control slots in the stacking system, and the downlink secondary stacking ports are stacking ports, connected with the stacking port extension slots, on the stacking control slots; and any of the stacking control slots selects one slot port from the cross-equipment aggregation group ports connected with the stacking port extension slots to forward a message when forwarding the message to the stacking port extension slots.

Embodiments of the present invention provide a message forwarding method, equipment and network device, wherein the message forwarding method includes the following steps: a layer 3 routing table is queried, according to the destination internet protocol (IP) address of a received message, to acquire the next-hop identification information; an address resolution protocol (ARP) table is queried, according to the next-hop identification information, to acquire the next-hop media access control (MAC) address corresponding to the next-hop identification information, wherein the ARP table is composed of the next-hop identification information and the next-hop MAC address corresponding to the next-hop identification information; a layer 2 forwarding table is queried, according to the next-hop MAC address, to acquire the exit port information corresponding to the next-hop MAC address; the message is forwarded out via the exit port corresponding to the exit port information. By applying the technical solution of the present invention to forward the message, the instantaneous busy problem of the device and the problem of the traffic interruption can be solved, wherein the problems are caused by that a large number of ARP Miss messages and ARP request messages are generated when the port switch in a virtual local area network (VLAN) occurs in the prior art. Therefore, the forwarding efficiency of the message is improved.

The invention provides a method and a device for achieving packet forwarding. The method is applied to a distributed firewall device which is at least composed of a plurality of interface boards, a plurality of business boards and a main control board. The method at least includes that each interface board receives a forward message in a private network and sends the forward message to a corresponding business board, each business board receives the forward message, a source internet protocol (IP) address of the forward message is modified to a preset public network IP address of the local business board, a source port of the forward message is modified to any network address translation port of a network address translation port section distributed by the main control board, a network address translation session is established, the converted forward message is sent to a corresponding interface board, and the interface boards send the converted forward message in a public network. According to the method and the device, the main control board of a distributed firewall distributes ports used for network address translation (NAT) based on a request of each business board, and thereby the NAT is performed for the forward message, a corresponding NAT is established, and the new establishing and concurrence of the NAT session can increase with the increasing of the business boards.

An apparatus and a method for realizing a configuration for transmitting and outputting captured data of a video camera to a specific device via a network are provided. In a configuration for generating a transmission packet containing the captured data of the video camera and outputting the transmission packet via a network, a host name of a data transmission destination device and a port number, to which port forwarding processing of a relay device of a network connected to the data transmission destination device is set, are acquired from a memory, address information corresponding to the host name is acquired from a DNS server, and a captured image data containing transmission packet in which the address information and the port number are set as destination information is output via the network. This configuration permits data to be certainly transmitted to a specific selected device and reproduction of stream data in synchronization with a capturing timing is realized.

A network communication device (100) comprises a router search unit (102) for searching a router (300) connected to a local network (200), an attribute information acquisition unit (104) for acquiring attribute information from the searched router (300), an attribute information storage unit (105) for storing the acquired attribute information, a router control unit (103) for controlling the searched router (300) to perform port forwarding setting, and an attribute information transmission unit (106) for transmitting the attribute information stored in the attribute information storage unit (105) to a portal server (500) on a wide area network (400).

A method and system for transferring a queue of packets in a router between an inbound controller and an outbound controller is disclosed. The inbound controller is adapted for receiving an inbound packet at an inbound port. In addition, a plurality of inbound queues are provided for the inbound port. An inbound packet is then received at the inbound port. The inbound packet is classified in a selected one of the plurality of inbound queues according to packet sorting criteria. The inbound packet is then stored in the selected one of the plurality of inbound queues. The inbound controller is capable of determining when one of the plurality of inbound queues is ready to be moved to an outbound queue which is capable of storing a multiplicity of inbound queues. The outbound controller is adapted for forwarding packets at an outbound port. At least one outbound queue is provided for the outbound port which is capable of storing a plurality of inbound queues. The outbound controller is capable of receiving a notification to handle an inbound queue storing a plurality of packets. The inbound queue is then transferred to the outbound queue. The outbound controller may then transmit packets stored in the outbound queue. A CPU may control the inbound controller and the outbound controller.

The invention discloses a message forwarding method and device of a distributive virtual switch system. The method comprises the steps that after an OF switch is established, an aggregation set corresponding to the OF switch is established, and at least two uplink ports, connected with a physical switch, of the OF switch are added to the aggregation set; an uplink message forwarded by the OF switch is received, and the uplink message is received through the OF switch via a dvport connected with a VM; the aggregation set corresponding to the OF switch is determined, and one uplink port in the aggregation set is selected as an outlet port of the uplink message according to the related message of a message header of the uplink message and the aggregation algorithm corresponding to the aggregation set; a streaming table item used for guiding forwarding of the uplink message is generated and stored in a local streaming table, wherein the executing actions of the generated streaming table include the forwarding of the uplink message through the outlet port, and the generated streaming table item and the uplink message are sent to the OF switch sending the uplink message.

The invention provides a method, equipment and a system for accessing an intranet server. The method includes enabling CGN [carrier-grade NAT (network address translation)] equipment to preliminarily configure a public network IP (internet protocol) address and a public network port identifier according to application information of an internal server, and storing configuration information in an access list of the internal server; judging whether first configuration information matched with network access information is available in the access list of the internal server or not when the network access information which is transmitted by an extranet user terminal and contains a destination IP address, a destination port identifier and a transmission protocol is received; and enabling a port corresponding to a first public network port identifier to forward the network access information to a port which is located on the intranet server corresponding to a first private network IP address and corresponds to a first application port identifier if the first configuration information is available in the access list of the internal server. The application information of the internal server is transmitted by an intranet user terminal, and the public network IP address and the public network port identifier correspond to a private network IP address, an application port identifier and an application transmission protocol. The method, the equipment and the system have the advantage that extranet users can actively access the internal server via the address translation technology by the aid of the CGN equipment.

The invention provides a method and device for forwarding messages. The method comprises the following steps: carrying out Hash operation in accordance with parameters for identifying streams to which the messages belong in the messages so as to obtain initial Hash values; carrying out two different Hash operations on the initial Hash values so as to obtain two different Hash values; selecting one equivalent router among equivalent routings which arrive at the destination internet protocol (IP) address of the messages in accordance with the one of the two Hash values, and selecting one port among aggregation ports corresponding to the selected equivalent routers in accordance with the other one Hash value; and forwarding the messages by the selected port. According to the invention, the different messages which are forwarded by the same member routers of the equivalent routings are shared on the different ports of the aggregation ports corresponding to the member routers for forwarding.

A gateway for a computer network includes a programmable integrated circuit device, and a first port and a second port coupled to the programmable integrated circuit device. The programmable integrated circuit device is structured and configured to, responsive to a restoration of power to the gateway following a loss of power at the gateway, read configuration information stored by the gateway, and if indicated by the configuration information, forward first data traffic from the first port to the second port and forward second data traffic from second port to first port until the programmable integrated circuit device is configured to do otherwise.

This invention provides a method for accurately forwarding IP multicast port in three layers of exchange including: 1 keeping related VLAN ID for received messages and concrete physical numbers of VLAN, 2 generating and maintaining a multicast rout port image list which stores the multicast rout source address, the target multicast address, input interface VLAN ID and the physical port number and the output interface VLAN ID and physical port number listing 3 sending the multicast route items of quad mode to a forward chip according to the corresponding multicast route port image list items, the chip generates input and output interfaces as the multicast forward item of the concrete physical port under VLAN 4 The forward chip forwards the data message according to the multicast forward items.

The invention relates to a system of wireless access network gate which supports transparent proxy, and relative method, wherein said system comprises terminal, network access device, network gate, server, and router between network gate and network access device; the router based on terminal request service type replaces the server IP address and port of service data report into relative IP address and port of network gate; said network gate based on replaced target IP address and port transfers data report. The inventive method comprises that: confirming the service type requested by terminal, and the IP address and port of relative network gate; replacing the server IP address and port into IP address and port of network gate; network gate transfers the data report replaced with IP address and port.

The invention is applicable to the communication field, and provides an NDN multiport forwarding method and a router. The method comprises the following steps: when an interest packet is forwarded, a matching item matching the interest packet is queried in a local forwarding information table (FIB), so as to acquire a plurality of ports corresponding to the matching item; according to weighted values of the plurality of ports, several ports are selected from the plurality of ports for forwarding the interest packet; and based on whether a port of a forwarded interest packet receives a returned content packet matching the interest packet, the weight value of the port of the forwarded interest packet is updated. According to the technical scheme of the invention, the advantages of reducing the interest packet flooding and improving the forwarding efficiency are realized.

The invention discloses a multicast stream transfer method, comprising the following steps that: when a double-layer switch receives a group of multicast stream and the group of multicast stream is unknown, the multicast stream is transferred to the preset group of ports; when receiving the multicast stream transferred by the double-layer switch, a three-layer device connected with the double-layer switch judges whether the three-layer device has an outgoing interface of the multicast stream; if yes, a request message is sent to a port of the three-layer device receiving the multicast stream to require to receive the multicast stream; the double-layer switch adds the port receiving the request message to a multicast member port list corresponding to the multicast stream and adds the port in the multicast member interface list to a double-layer multicast transfer list; and the double-layer switch transfers the multicast stream to the port of the double-layer multicast transfer list. The invention also discloses a multicast stream transfer system. The technical proposal of the invention avoids the waste of the bandwidth.

One embodiment of the present invention provides a switch. During operation, in a network with a private VLAN configuration, the switch allows a congestion notification message with an isolated virtual local area network identifier (VLAN ID) to be forwarded via an isolated VLAN port.