35 results about "Proxy ARP" patented technology

A power-save QSTA notifies an Access Point (AP) that its operating in a automatic power-save delivery (APSD) mode and negotiates a periodic wakeup schedule and a scheduled startup time with the AP. Wakeup times are synchronized with the 802.11 Timer Synchronization Function (TSF). The AP automatically sends frames to the QSTA when it determines the QSTA is in an awake state, otherwise downlink frames are buffered. The AP uses a combination poll+EDCF access method wherein at the start of each wakeup period the AP sends a poll to the QSTA, the poll having a flag that indicates to the QSTA if the AP has a downlink fame buffered for the QSTA. In addition, a Proxy ARP Server in an AP maintains IP/MAC bindings for associated clients so that when the AP receives a proxy ARP request for a client, the AP may respond for the client.

In a network supporting transactions between clients and servers and proxies that are interposable in a network path between at least one client and at least one server, wherein a pair of proxies can modify a packet stream between a client and a server such that packet data from the client to the server is transformed at a client-side proxy of the proxy pair and untransformed at a server-side proxy of proxy pair and such that packet data from the server to the client is transformed at the server-side proxy and untransformed at the client-side proxy, a method and apparatus for a discovering proxy to transparently discover its position in a proxy pair by using proxy signals to indicate to other proxies that could pair with the discovering proxy. A discovering proxy might determine that it is a client-side proxy by receipt of a packet from client without a proxy signal. A discovering proxy might determine that it is a server-side proxy by receipt of a packet from server without a return proxy signal. Once a proxy pair is discovered, that proxy pair might transform traffic from the server to the client or vice versa, transforming the traffic at one proxy of the proxy pair and untransforming the traffic at the other proxy of the pair.

A method for creating a single virtual LAN including a source (S) attached to a first Token ring LAN (N1), a target (T) within a subnet attached to a different Token ring LAN (N2), and an interconnecting router (R). The source (S) encapsulates the first packet with a Token ring header including the router MAC address (RMAC), SMAC as source MAC address as layer 2 information, and IP address of T (TIP) as layer 3 data and sends this packet over N1 toward the router. When receiving the first packet, R reads its IP table for best match with TIP address to identify the subnet including T. The net handler runs an ARP protocol to identify TMAC address, substitutes the MAC header with said TMAC address into said first packet destination MAC address field and forwards said first packet over N2. R then sends a conventional ICMP message over N1 limited broadcast and reconfigures itself in proxy ARP for the defined subnet. For the second packet, S runs an ARP and R answers with RMAC address and the RIF data to be used for next packets.

A virtual local area network(VLAN) data switching method uses an address resolution protocol(ARP) packet in VLAN constructed with one internet protocol(IP) subnet. This is achieved by making a source host broadcast an ARP request packet, making a Proxy ARP server prepare to transmit a virtual ARP request packet wherein the Proxy ARP server receives the ARP request packet, and making a destination host transmit an ARP response packet in direct to the source host through a switching unit wherein the destination host receives the virtual ARP request packet. Data transfer delay time for the data exchanged between different VLANs as well as the router load occurring in handling the traffic between VLANs are reduced, so that data handling performance for high-capacity multimedia data transferred on VLANs is improved.

In an access point device, a controller controls a wired interface communicating on wire with a network switcher accommodating access point devices and a wireless interface communicating wirelessly with a wireless terminal device located in its service area. Services are handed over between the access point devices responsively to the wireless terminal device moving. Access point devices before and after the handover of services are defined as a handover source and a hand over destination, respectively. A hand over at the hand over destination causes a data frame to be generated containing the MAC address of the wireless terminal device as a source address, a broadcast address as a destination address and address information of its own device. A table holds terminal connection information defining the relationship of the MAC address to the IP address of the wireless terminal device. The data frame is transmitted to the network switcher through the wired interface.

The communication method based on PCI-E bus is disclosed to data communication in panel and among panels distributed system, and applies single-ring sequence design with PCI Express bus share memory to multiplex three of that PCI Express drives the transmitting, the receiving buffer, and the virtual network upper protocol stack buffer. This invention also applies agent ARP technology to make the external host to feel all units in panel as connecting in LAN. This invention overcomes defects in prior art, and fit to PCI-E bus based distributed system.

An information processing apparatus capable of changing packet patterns for determining, based on a condition of proxy ARP compatibility of a connected wireless LAN access point, communication requests to which the apparatus can respond in a power saving state, and thereby maintaining the power saving state for a longer time period. A RAM of an MFP operable in the normal state and the power saving state stores packet patterns which enable the MFP to respond to packets received in the power saving state while maintaining the power saving state. The MFP acquires proxy ARP support information from a wireless LAN access point that relays communication between the MFP and an external apparatus. The MFP determines whether or not the AP can respond to a received communication request on its behalf, and changes the packet patterns based on the determination result.

The present invention manages power for state machines. The system and methods selectively apply, remove and/or reduce power to portions of the state machine, based on power management schemes, intelligence, a user, an application, etc . Such novel systems and methods provide for sustaining a CPU and/or a network radio in an "on" state, while lowering and/or removing power to other portions of the state machine to reduce power consumption. The foregoing enables a wireless mobile terminal to maintain network connectivity and be able to wake to service events such as a link status change, a network keep alive, a proxy-ARP packets, a re-authentication packets, etc . Such power management can execute in the background and return the wireless mobile terminal to a "run" state via invocation from a wake source such as a power control, a key, a trigger, a touch screen, a wake up timer, a wake-on-LAN, etc .

The invention discloses a method for realizing a proxy address resolution protocol (ARP) based on a gratuitous ARP. The method comprises the following steps that: A, an access switchboard creates and stores host Internet protocol (IP) address information by monitoring the gratuitous ARP process of an IP host, and transmits the host IP address information to a convergence switchboard; B, the convergence switchboard receives the host IP address information, and stores the host IP address information to a host IP address information table; and C, after receiving an ARP request message transmitted by the IP host, the convergence switchboard judges whether a target IP address in the ARP request message is in the host IP address information table, if the target IP address is in the host IP address information table, the convergence switchboard transmits an ARP response message to the IP host, if the target IP address is not in the host IP address information table, the convergence switchboard discards the ARP request message. By the method, accessibility detection of a target terminal in the proxy ARP is realized.

The invention proposes a route collocation method applied to a mobile termination of PMIPv4, and proposes a scheme for the mobile termination to realize an absolute no participation in acting for switching mobile IP process through an adoption of agent ARP at the network end. Not needing to regulate network layout of a current wireless local area network and not needing any alteration or allocation on the current mobile termination, the scheme only needs to have a proper alteration of an agent mobile management end PMA of the network end to lower complexity and switching time lapse of the mobile termination.

The invention discloses an SDN layer-2 forwarding method and system. The method comprises that when performing address resolution protocol (APR) proxy reply on a source host, a controller sets a destination host media access control (MAC) address in an ARP reply sent to the source host as a proxy MAC address generated in advance; the source host and the destination host encapsulate an interaction data packet and send the interaction data packet to a switch by using the proxy MAC address as the destination host MAC address; and the switch forwards, between the source host and the destination host according to a forwarding table sent by the controller, the interaction data packet in which the proxy MAC address is encapsulated. The forwarding table is used for indicating a forwarding path for an Internal control message protocol (ICMP) layer-3 data packet in which the proxy MAC address is encapsulated. According to technical schemes of the invention, the scale of the forwarding table searched by the switch can be reduced, the performance of a table searching and forwarding message of the switch can be improved, and the difficulty and workload of maintaining the forwarding table are further reduced.

The invention discloses a method and a system for realizing a proxy ARP (Address Resolution Protocol) function based on DHCP (Dynamic Host Configuration Protocol) interception. The method comprises the following steps that: a DHCP interception function is started up in an access layer switch, the proxy ARP function is started up in an aggregation layer switch, and the IP (Internet Protocol) address of the aggregation layer switch is configured in the access layer switch; the access layer switch intercepts a DHCP requesting process of a client-side, creates and stores binding information, and uploads the binding information to the aggregation layer switch; the aggregation layer switch stores the binding information into a binding information table; and the client-side sends an ARP requesting message to the aggregation layer switch, and the aggregation layer switch queries the binding information table, and sends an ARP response message to the client-side when the binding information table contains the destination IP address of the ARP requesting message. With the adoption of the technical scheme provided by the invention, the accessibility in the detection of the destination IP address by using proxy ARP equipment can be achieved, so that the communication between a requesting terminal and a destination terminal is ensured.

The invention discloses an ARP (Address Resolution Protocol) agent method based on different VLANs ((Virtual Local Area Networks). The ARP agent method is characterized by comprising the following steps that: a HostA (VLAN10) hopes to be communicated with another host HostC (VLAN40), and the HostA directly sends an ARP request; after receiving the ARP request, an apparatus applying an agent ARP searches a local ARP cache list, and if corresponding table items (comprising an IP (Internet Protocol) and MAC (Media Access Control) of the HostC) are found, the agent ARP immediately responds related information of going to the target HostC to the HostA; when a frame of a source address to a certain network segment is received, network segments in the agent ARP cache list are searched, and then a data packet is broadcast in a corresponding VLAN area (reduction of whole network efficiency, which is caused by whole network broadcasting, is avoided, and a request response rate is improved); and after receiving a broadcast, the HostC immediately responds to an ARP response and notifies an MAC address of the HostC, and after receiving the ARP request, the agent ARP apparatus notifies the MAC of E0/0 to the HostA. According to the ARP agent method based on different VLANs, which is provided by the invention, whole network operation efficiency is promoted.

The invention discloses a data distribution method, device and system. The method comprises the following steps that: network equipment broadcasts an ARP request message in a local area network in order to find required target equipment; wireless transmission equipment makes a response to the ARP request message in a proxy ARP way, and transmits data sources transmitted by the network equipment to wireless receiving equipment on the basis of supported channels; and after reception of the data sources, the wireless receiving equipment broadcasts the ARP request message, finds target equipment specified by the data sources, and transmits the data sources to the target equipment. According to the method, IP data of the data sources are distributed to channels with different frequencies to be transmitted according to a destination IP of the IP data through a proxy ARP technology, so that the problem of insufficient frequency resources in a single channel is solved.

A method to improve connection smooth-going of operative communication works in equipment of operative end as the new register request will be ignored or other wise to carry on normal registering program if the point distance of time for last time of registering request is less than a preset figure at the point of this time when message of registering request emitted by agent servor is detected at a point of time; in the agent servor as the cold registering request will be deleted and only new registering request will be processed if the state of former registering request is in confirmation, channel production or agent ARP, or the cold registering request will be processed continuously and normally if the state of former registering request is in roll back of exiting when a new registering request is received.