142 results about "Generic Routing Encapsulation" patented technology

A system for selectively applying a service to a packet in a network. In a specific embodiment, the system includes a mechanism for encoding service information in a network-compatible packet header and providing encoded data in response thereto. In a more specific embodiment, the network-compatible header includes a Multi-Protocol Label Switching (MPLS) header, a Generic Route Encapsulation (GRE) header, and / or a Layer-2 Tunneling Protocol (L2TP) header.

A method and system for providing a packet data service of a cellular network to an access terminal (AT) that accessed a wireless local area network (LAN) are provided. The AT accessing the wireless LAN transmits a session request message. Once the session request message is received, an interworking—entry server (IES) sends an authentication request for the AT, and after completing authentication on the AT, transmits a session response message to the AT. Once the session response message is received, the AT sets up a generic routing encapsulation (GRE) tunnel to an interworking—packet control function (I-PCF). The I-PCF sets up a GRE tunnel to a packet data serving node (PDSN) that provides the packet data service to the AT. The AT exchanges packet data with the PDSN.

A system and method for synchronizing Broadcast / Multicast Service (BCMCS) traffic in a mobile communication system connected to a BCMCS server. A Packet Data Service Node (PDSN) receives a BCMCS content frame from the BCMCS server, and transmits a corresponding Generic Routing Encapsulation (GRE) packet BCMCS content frame, including a sequence number and a timestamp value indicating when the GRE packet BCMCS content frame is transmitted, to Packet Control Functions (PCF) connected downstream of the PDSN. Each of the PCFs determines whether the GRE packet BCMCS content frame received from the PDSN is valid, based on the sequence number included therein. If the GRE packet BCMCS content frame is valid, the PCF transmits the frame to its lower nodes connected downstream of the PCF, while synchronizing the frame transmission, based on the timestamp value included in the frame.

A method for processing data packets in an interception proxy server without using a Network Address Translation module. A TCP packet received at a router is encapsulated using generic routing encapsulation (GRE). The TCP packet is redirected to a proxy server through a GRE tunnel which includes a redirection rule comprising a local destination IP address and port to be used for traffic passed through the tunnel. When the proxy server receives the TCP packet, the TCP packet is decapsulated. If a flag is set in the payload header of the TCP packet indicating that a redirection rule has been configured for traffic passed through the tunnel, the payload header of the TCP packet is modified according to the redirection rule. The modified TCP packet is then passed to a transmission control protocol of the proxy server.

The invention discloses a method and a system for managing a remote concentrated image, wherein the method is applied to a system comprising a centralized management center and one or a plurality of data centers, and the method comprises the following steps of: receiving a image flow rate which is from the data center and is sent through a GRE ( Generic Routing Encapsulation) tunnel by a router of the centralized management center, searching a next-hop route in a VPN (Virtual Private Network) instance corresponding to the GRE tunnel and sending the image flow rate to a corresponding VLAN (Virtual Local Area Network) interface on an exchanger of the centralized management center; and after the exchanger of the centralized management center receives the image flow rate through the VLAN interface, sending the image flow rate to monitoring equipment through the VLAN interface connected with the monitoring equipment. The invention realizes the three-layer network realization of the monitoring and the management of the remote concentrated image.

A system and method for transmitting packet data to a hybrid mobile terminal upon inter-system handoff is provided. The terminal communicates with High Rate Pack Data (HRPD) and voice mobile networks. A Packet Control Function (PCF) system converts received data for transmission to the terminal into Generic Routing Encapsulation (GRE) packet data, stores the GRE packet data combined with a GRE packet key in an active queue, transmits it to an access network, and stores packet data stored in the active queue in a dormant queue when receiving a link release message from the access network. The access network converts GRE packet data received from the PCF system into an Radio Link Protocol Data (RLP) packet, stores it in combination with a GRE packet sequence number, and transmits it to the terminal. When detecting air link loss with the terminal, the access network creates and transmits a link release message including a GRE packet sequence number that has not been transmitted to the terminal.

A cloud security service is made available to endpoint computers. Network traffic from originating application programs running on endpoint computers are redirected to the cloud security service based on characteristics of the originating application programs. Network traffic from an originating application program may be redirected to the cloud security service by way of a virtual private network (VPN) tunnel or generic routing encapsulation (GRE) tunnel between an endpoint computer and a cloud computing system hosting the cloud security service, for example. Network traffic from an originating application program may also be routed from an endpoint computer to a gateway system, and then redirected from the gateway system to the cloud computing system. The cloud security service may drop or forward network packets of the network traffic depending on a result of scanning the network packets.

The Packet Control Function (PCF) has limited knowledge about the nature of the packet data arriving on a bearer path connected via the Packet Data Serving Node (PDSN), and cannot make an intelligent decision on its own as to how best to handle the packet data. Thus, the PDSN provides bearer-specific information by classifying the priority of received packet data; encapsulating the packet data within the payload of a Generic Routing Encapsulation (GRE) frame; and for high priority packet data i) setting a protocol type field in the header of the GRE frame indicating said packet includes an attribute field; and ii) adding an attribute field to the payload of the GRE packet which provides an indication of said high priority data. Furthermore, the PCF can send an A-11 request to the PDSN indicating the features that the PCF is requesting the PDSN enable. For example, for a short data indication, the PCF would request the PDSN enable adding the attribute field to the GRE frame when an Short Data Burst (SDB) is suitable.

The invention discloses a message processing method, related equipment and computer readable storage medium. The method comprises the steps that: a first switch searches a table item of a first service flow corresponding to a data message in a flow table; the table item corresponding to the first service flow at least comprises generic routing encapsulation (GRE) tunnel information of the first service flow and flow label information for identifying the first service flow; the searched table item is used, and the data message is encapsulated into a GRE message; and the GRE message is forwarded to a quality of service (QoS) port queue corresponding to the first service flow so as to emit the GRE message, wherein the GRE message at least carries the flow label information.

In a network that supports mobility of a mobile node, a tunnel between a first mobility node and a second mobility node is established in the network. The established tunnel is according to a tunneling protocol (e.g., Generic Routing Encapsulation tunneling protocol) that uses at least one key (208) for encapsulating data communicated through the tunnel. The symmetric or asymmetric key may be used for identifying a particular traffic flow in either the forward or the reverse direction between mobility nodes, e.g., when supporting mobility nodes that are using overlapping private IPv4 addressing. Signaling is communicated to provide mobility support of the mobile node according to a mobility protocol, where the mobility protocol is selected from among a Proxy Mobile Internet Protocol and Mobile IP version 6.

The methods of the present invention enable wireless gateway nodes to support mobile node services, such as content based billing, when a data treatment server is present in the system. Using one of a defined Content Flow Label (CFL), an Application Program Interface (API), and a compression protocol header, the present invention provides content based billing by exchanging content and byte count information with the data treatment server. In one embodiment, a new compression protocol header type is defined. In a second embodiment, a content flow label with a byte count field is inserted in a Generic Routing Encapsulation (GRE) header. In an alternate embodiment, the wireless gateway node implements an API to transfer the content flow label and byte count information over a signaling link. In yet another embodiment, the data treatment server performs the content based billing and similar mobile node services.

The invention discloses a message transmission method and device. The method includes that a generic route encapsulation (GRE) first message from an edge bridge device is received by a gateway device, and the first message is decapsulated to obtain a second message; the gateway device searches for a local routing list according to a destination internet protocol (IP) address of the second message; the gateway device performs GRE on the second message to generate a third message according to the found IP address and a media access control (MAC) address of the edge bridge device, and the destination IP address of the second message corresponds to the found IP address and the MAC address of the edge bridge device; and the gateway device sends the GRE third message to a corresponding edge bridge device. By means of the message transmission method and device, messages required to be transmitted among different terminal devices can be normally forwarded.

The invention discloses a remote port mirroring realization system and a method, which are applied to the field of data communication. The remote port mirroring realization system comprises a source switch mirroring unit, an intermediate switch data transmission unit and a destination switch port mirroring unit, wherein the source switch mirroring unit processes monitoring message through a reflection port and a reflection port strategy and forwards the processed monitoring message to an intermediate switch; the intermediate switch data transmission unit is responsible for transmitting the monitoring message which is transmitted to the intermediate switch from a mirroring source switch through a generic routing encapsulation (GRE) tunnel to a mirroring destination switch; and the destination switch port mirroring unit is used for completing local port mirroring from a GRE tunnel incoming port to a mirroring destination port. Compared with the prior art, the remote port imaging can be realized without requiring a mirroring function from a switch chip support port to a GRE tunnel interface and convenience is brought to the analysis of messages which cross the remote switch of a three-layer network.

The present invention provides a method for distributing Internet Protocol Television (IPTV) content over a national IP backbone using GRE tunneling in a point-to-point ring topology. A logical path is defined that connects multiple hub offices, each including at least two routers, in a ring network topology. Generic Routing Encapsulation (GRE) tunnels are used over an existing Internet Protocol (IP) backbone to establish connectivity between adjacent hub offices. A direction for content flow is defined. The direction of flow may be determined by selecting a designated router. The routers of the hub offices selectively join to upstream routers. This direction may be reversed by changing the direction of in which routers join. IPTV content is distributed over the defined path using the GRE tunnels. The necessity of forwarding the content is determined at each hub office.

The application provides a message transmission method and a message transmission device. The method comprises the following steps: after receiving a first message, determining VPN (Virtual Private Network) information corresponding to the first message, and querying a forwarding table corresponding to the VPN information according to the destination IP address of the first message to get an outbound interface corresponding to the destination IP address; if the outbound interface is a GRE (Generic Routing Encapsulation) tunnel, packaging a first GRE tunnel header corresponding to the GRE tunnel for the first message to get a first GRE tunnel message, wherein the first GRE tunnel header contains the VPN information; acquiring an IPsec (IP Security) tunnel corresponding to the GRE tunnel, and packaging a first IPsec tunnel header corresponding to the IPsec tunnel for the first GRE tunnel message to get a first IPsec tunnel message; and sending the first IPsec tunnel message through the IPsec tunnel so that opposite-end equipment receiving the first IPsec tunnel message can send the first message according to the VPN information. Through the technical scheme of the application, the resources of the IPsec tunnel can be saved, and the public network address resources can be saved.

The invention discloses a message sending method and device. The method comprises the following steps: a GRE (Generic Routing Encapsulation) tunnel is set between a terminal and a CGN (Code Generation Network) through a PPTP (Point To Point Tunneling Protocol) message interaction process; the terminal receives a public network address distributed by a PPTP server module on the CGN or the public network address and a port range thereof; and the terminal uses the public network address or the public network address and the port range thereof to send a follow-up message to the CGN through the GRE tunnel. The public network address or the public network address and the port range thereof are directly distributed to the terminal, therefore network address translation on network equipment can be avoided, the network speed is increased, and the network quality is also increased.

The invention discloses a method and equipment for establishing a dynamic GRE (Generic Routing Encapsulation) tunnel. In the method, an active initiating party dynamically obtains a first interface of an IP address and transmits a dynamic GRE tunnel inquiry message carrying a source IP address to a passive receiving party; the passive receiving party authenticates the dynamic GRE tunnel inquiry message and an inquiry response message is transmitted to the active initiating party by the source IP address after the dynamic GRE tunnel inquiry message passes the authentication; the active initiating party transmits a dynamic GRE tunnel UP announcement carrying the source IP address to the passive receiving party by the first interface; and the passive receiving party authenticates the dynamicGRE tunnel UP announcement, an UP announcement response message is transmitted to the active initiating party by the source IP address after the dynamic GRE tunnel UP announcement passes the authentication, and the dynamic GRE tunnel between the first interface and a second interface is established. The invention realizes the establishment of the dynamic GRE tunnel by dynamically obtaining the interfaces of the IP address and the backup of the dynamic GRE tunnel.

The invention discloses a data transmission method applied to a network of which an identity identifier is separated from a location identifier. The data transmission method comprises the following steps that: a source terminal sends a first packet to a source access support node (ASN) and takes an access identifier (AID) of the source terminal and an AID of a destination terminal as a source address and a destination address of the first packet respectively; after the first packet is received, if a routing identifier (RID) which corresponds to the AID of the destination terminal is not locally queried, the source ASN takes the first packet as a payload packet by adopting a generic routing encapsulation (GRE) form and encapsulates the payload packet added with a GRE packet header and a transmission protocol packet header as a second packet; and the source ASN sends the second packet to a mapping forwarding plane, which queries the RID corresponding to the AID of the destination terminal and sends the first packet to a destination ASN according to the queried RID.

The invention relates to a testing method for universal route package tunnel in network communication field that uses OAM / BFD testing method checking GRE tunnel. The router at the two ends of GRE enables the testing function and sends testing file to opposite terminal. Counting the file quantity in regulated time to determine the state of GRE tunnel, corresponding measure would be taken according to the GRE tunnel state. The invention effectively improves the reliability of GRE tunnel.

The invention provides a GRE tunnel collocation method and a router thereof. An IP address is collocated for the other end by one end of a tunnel, and a fine main router is generated at the two ends of the tunnel in the invention, thus avoiding the problem of routing loop in GRE tunnel and improving the flexibility of GRE tunnel collocation.

The invention discloses a message transmission method and a device. The method includes that an edge bridge device receives a first message packaged by generic routing encapsulation (GRE) from a gateway device. The edge bridge device unbinds the first message GRE and a third message is obtained. According to an objective internet protocol (IP) address, a corresponding relation of the IP address and a multi-access computer (MAC) address in a local terminal device maintained in a local routing table is checked. After the MAC address corresponding to the objective IP address of the third message is ensured, the message is sent. The message transmission method and the device can normally transmit messages to be sent among different terminal devices.

The invention discloses a system and method for a smart power grid to transmit GOOSE messages across the wide area network. The system for the smart power grid to transmit the GOOSE messages across the wide area network comprises a sending end and a receiving end. The sending end comprises an encapsulation storage bucket and a first sorting sending bucket, wherein the encapsulation storage bucket is used for receiving the GOOSE messages, carrying out generic routing encapsulation (GRE) on the GOOSE messages, generating an encapsulation sequence number displaying the encapsulation sequence of the GOOSE messages, writing the encapsulation sequence number into a GRE masthead, then carrying out IP encapsulation on the GOOSE messages after the GRE, and generating and storing the IP messages, and the first sorting sending bucket is used for ordering the IP messages in the encapsulation storage bucket according to the encapsulation sequence number and then sending the ordered IP messages to an IP network. The receiving end comprises a de-encapsulation storage bucket and a second sorting sending bucket, wherein the de-encapsulation storage bucket is used for receiving the IP messages from the IP network, carrying out IP de-encapsulation and GRE de-encapsulation on the IP messages to obtain the GOOSE messages, and storing the GOOSE messages obtained after the de-encapsulation, and the second sorting sending bucket is used for ordering the GOOSE messages in the de-encapsulation storage bucket according to the encapsulation sequence number and then sending the ordered GOOSE messages to one or multiple intelligent electronic devices in a transformer substation.

The invention provides a message forwarding method based on a generic routing encapsulation (GRE) tunnel, comprising the steps that central equipment receives a GRE message which is sent from branch network equipment and carries at least one piece of branch subnetwork mask information; a corresponding GRE tunnel table entry is built according to the branch subnetwork mask information; the branch subnetwork mask information carried by the CRE message is obtained from a local routing table by the branch network equipment; and when the central equipment receives a message to be sent to the branch network equipment, the central equipment encapsulates and forwards the message to be sent according to the GRE tunnel table entry. Based on the same inventive concept, the invention also provides a system and equipment to improve the forwarding efficiency of the central equipment.