559 results about "Port forwarding" patented technology

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.

A multi-port packet-based bridge is described in which packet transmissions on particular ports or between ports may be monitored on another, monitoring port. Efficient operation is realized by using a multi-processor environment and data structures that allow a packet received on one port to be transmitted to multiple ports without being "copied" multiple times. By using a Supervisory Access Terminal, it is possible to specify various circumstances under which a packet will be sent to the monitoring port. These circumstances include monitoring of all packets incoming to a selected port (or ports), all packets forwarded to a selected port (or ports), and packets generated internally and sent to a selected port (or ports). In addition, all packets forwarded from one selected port to another selected port may be monitored. Port monitoring is supported by particular data structures that promote efficient dispatching of packets and by a Bridging Cache that retains the results of recent dispatch calculations. Similar techniques are applied to multi-port routers.

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.

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 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.

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.

In a port forwarding configuration system and method for wire and wireless networks, when an Internet protocol (IP) is allocated according to a request from a wireless terminal of a private network and an initialization information message is transmitted by the terminal, a port to be used by the terminal is configured and a configured port information message is transmitted to the terminal so as to open a port for the terminal, thereby performing a remote connection of a user terminal to the wireless terminal through port forwarding.

The invention discloses a method and a switch for realizing forwarding of a dynamic tunnel message. The switch is positioned at the edge of an IPv6 network and comprises a central processing unit (CPU) and an application-specific integrated circuit (ASIC); the method comprises the following steps: presetting an aggregation router table entry of a dynamic tunnel in an ASIC hardware forwarding table in a three-layer switch at the edge of the IPv6 network as a pointed CPU; after the switch receives an IPv6 message, sending the message to the CPU according to the aggregation router table entry if the switch searches and judges that the message points to the dynamic tunnel according to an IPv6 router; after the CPU receives the message, adopting a mode of software router to reserve the corresponding relationship between the acquired two-layer information and the IPv6 destination address prefix of the message, and synchronizing the corresponding relationship into the ASIC hardware forwarding table, and forwarding the message from the corresponding outlet port. In the invention, the ASIC forwarding resources can be utilized fully, and the searching efficiency of the router is improved.

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 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.

A network controller improves load-balancing within a network system without requiring an intelligent switch having TCP splicing capability. The network controller forwards connections in response to directives from the connected server, permitting connection splicing within the network controller, but in response to a determination within the server that a connection to an alternative node is more desirable. The server detects that a packet buffer for an original destination node exceeds a threshold and sends a command to the network controlled to forward connections to an alternate destination node. The alternative node connection can be determined based on data availability, server load or other criteria. The packet forwarding mechanism and can be implemented very compactly within the firmware of the network controller and the server forwarding control can be communicated via the network controller device driver.