33 results about "Virtual Leased Line" patented technology

A method for implementing a virtual leased line (VLL) is provided. The method includes the steps of: configuring a virtual local area network (VLAN) label stack on the basis of VLAN QinQ technique; configuring a VLAN QinQ switching device and a multi-protocol label switching device to communicate with each other; extending a label distribution protocol (LOP) to support encapsulation of VLAN labels, so as to carry out VLAN label assignment and take the extended LOP as a topoloay discovery protocol for an L2 virtual private network; setting the range of VLAN labels; implementing a VLL by constructing a VLAN switching path.

Method in a packet based communication network including network domains to establish a virtual leased line (VLL) between a source (SRC) and a destination (DST) in different domains in order to achieve packet transfer between the source and the destination, wherein a bandwidth broker (BB) is associated to each network domain.

A method for switching end to end pseudoline artificial virtual leased line in to virtual special network includes setting multiple global unique pseudoline ID in virtual exchange example according to pseudoline ID of end to end psudoline artificial virtual leased line requiring to be switched-in, obtaining pseudoline ID corresponding to said virtual exchange example by end to end pseudoline artificial virtual leased line through matching and seeking then switching in said virtual exchange example. The system used for realizing said method is also disclosed.

The invention discloses a method and device for transmitting data based on a VLL (Virtual Lease Line), which are applied to a MPLS L2VPN (Multi-Protocol Label Switching L2 Virtual Private Network). At least two AC (Attached Circuits) exist on the AC side of at least one PE (Provider Edge) equipment of PE equipment at the two ends of a VLL PW (Virtual Lease Line Pseudo Wire). The method comprises the following steps of: distributing an A-TAG (Access-Tag) for the ACs of the PE equipment at the two ends of the PW respectively and configuring the A-TAG mapping relation of the PE equipment at the two ends on the PE equipment at the two ends of the PW; after the PE equipment at one end of the PW receives a message from the AC at the same end, acquiring the A-TAG of the AC at the same end, acquiring the A-TAG of the PE equipment at an opposite end corresponding to the A-TAG of the AC at the same end according to the A-TAG mapping relation configured at the same end, encapsulating the message into a PW channel message which carries the A-TAG of the PE equipment at the opposite end, and transmitting the PW channel message to the PE equipment at the opposite end through the PW; and after the PE equipment at one end of the PW receives the PW channel message from the PW, de-encapsulating and forwarding a de-encapsulated message through the corresponding AC at the same time according to the carried A-TAG. By adopting the method and the device, supporting of multi-point access of a local AC and the AC at the opposite end in a VLL PW link can be realized.

The invention discloses a method for accessing multi-protocol label switching virtual private network, which comprises the following procedures: the data stream of the virtual leased line is received and forwarded through a virtual Ethernet interface on the loopback board, each virtual leased line is provided with at least two different virtual Ethernet interfaces, and the different virtual Ethernet interfaces is respectively arranged on the different loopback board; when certain loopback board is detected that the malfunction is generated, and the data stream bore by the failed loopback board is switched to another loopback board. Accordingly, the invention also discloses a service provider edge equipment, at least two different virtual Ethernet interfaces are arranged for each virtual leased line through carrying out the embodiment of the invention, the different virtual Ethernet interfaces is respectively arranged on the different loopback board, and after certain loopback board fails, the purpose that the service can be quickly switched to another loopback board can be realized, to avoid the service interruption of the virtual leased line user for a long time, enhance the reliability of the network and improve the satisfaction of the user.

The invention discloses an SDN management network architecture, which comprises an SDN controller, a core node layer 3 switch, openflow switches, branch node layer 3 switches, a VPN server and internet access equipment, wherein the SDN controller is deployed at a core node of a network; the SDN controller is connected to the core node layer 3 switch; the branch node layer 3 switches and the openflow switches are deployed at branch nodes; a management port and a service port of each openflow switch are respectively connected to two ports of the corresponding branch node layer 3 switch; the VPNserver is deployed at the core node and is connected to internet through the internet access equipment; in-band management channels are established between the core node and the branch nodes based onan SDN service network, and the in-band management channels are virtual leased lines established by configuring an initialization flow table of the openflow switches; and VPN leased lines are established between the core node and the branch nodes through the internet and are taken as out-of-band escape management channels which have lower levels of usage than the in-band management channels.

The invention relates to the information technical field, disclosing a virtual leased line (VLL) failure monitoring method and device, where the method firstly receives the message sent by local user end to opposite user end from the VLL; judging whether the received message is a link protocol message and when the message is a link protocol message, judging whether the link protocol message is a failure message. In addition, the invention provides a VLL failure monitoring device. And the invention can monitor the link failure in any position when the same media are interconnected and fast reroute VLL service according to the monitored failure, so as to be able to effectively protect VLL service reliability.

The invention provides a virtual leased line network service protection method and an operator edge device, and the method comprises the following steps: step A, using a local operator edge device fordetecting the disconnection of an access link between the local operator edge device and a local user edge device; step B, using the local operator edge device for acquiring a pseudo-line mark from the local operator edge device to a remote operator edge device; and step C, using the local operator edge device for generating a signal message of disconnection type of the link and sending the signal message of the disconnection type of the link to the remote operator edge device, wherein, the signal message contains the pseudo-line mark. When the access link between a PE at one end of a VLL network and a CE is disconnected, the disconnection message can be rapidly notified to the PE at the other end.

The invention discloses a VLL (virtual leased line) fault detection method and device. The method comprises the following steps of: sending BFD (bidirectional forwarding detection) messages to a PE (provider edge) node at an opposite end by a local PE (provider edge) node, wherein the BFD messages are provided with an original MAC (media access control) address used for marking a PW (pseudo wire) and marking information used for marking the BFD messages as special BFD messages; and determining PW or / and AC faults when the value of the time within which the local PE node does not receive the response message of the BFD messages is larger than a threshold value. According to the method and the device, the influence to a public network link and other services among the PE nodes is lowered during the VLL (virtual leased line) fault detection, and the fault detection to PWs among the PE nodes and the fault detection to AC (alternating current) between a PE (provider edge) and a CE (customer edge) can be realized.

The embodiment of the invention discloses a testing method and a testing system for a virtual leased line (VLL) circuit. The method comprises the steps that a central server issues a first testing instruction to a first Ethernet probe; the first Ethernet probe sends a testing flow to an Ethernet interface on a first PE (provider edge); the first PE bridges the testing flow received by the Ethernet interface to an auxiliary basic data service interface through a heterogeneous medium adaptation technique; the auxiliary basic data service interface transmits the testing flow to a basic data service interface on the first PE through an auxiliary testing line; the basic data service interface sends the testing flow to an Ethernet interface of a second PE through the VLL circuit, and retransmits the testing flow to a second Ethernet probe; the first Ethernet probe and the second Ethernet probe compute together based on the testing flow to obtain a first testing result; and the first Ethernet probe reports the first testing result to the central server. According to the testing method and the testing system, the Ethernet probes are used for testing the heterogeneous medium VLL circuit in a basic data service.

A transmission management method, includes: receiving a request for establishing an on-demand virtual lease line from a first electronic device when a request is made to communicate with a second electronic device. Position information of the first electronic device and the second electronic device is obtained. Routers located between the first electronic device and the second electronic device are obtained according to position information of all routers stored in the storage unit, and the position information of the first electronic device and the second electronic device. Analyzing positions and workloads of the routers located between the first and second electronic device, and determining an optimal transmission path according to the positions and workloads of the router. The first electronic device and the second electronic device are controlled to communicate with each other via the determined optimal transmission path.

An on-demand transmission path providing method includes: receiving a virtual lease line (VLL) establishing request including a start area and an end area of the VLL and an establishing duration of the VLL; producing a VLL establishing information including a connection relationship of router devices constituting the VLL and ports of the router devices to be connected; assigning a timed task for the VLL according to the establishing duration, therein, the timed task includes a start time and an end time when establishing the VLL; judging whether current time reaches to the beginning time of the timed task; and establishing the VLL if yes.

The invention provides a method and device applied to message forwarding of a two-layer virtual private network. The method comprises the following steps of: establishing an access circuit between a local PE (Provider Edge) and local CE (Customer Edge), establishing an active virtual link and a protection virtual link with an opposite end PE which is connected with a remote end CE through an active tunnel and a protection tunnel respectively, and establishing an association relation among the access circuit, the active virtual link and the protection virtual link; and when a data message forwarded by the access circuit is received, transmitting the data message from the active virtual link and the protection virtual link respectively according to the association relation among the access circuit, the active virtual link and the protection virtual link. Due to the adoption of the method and the device, 1+1 protection switching of a VLL (Virtual Leased Line) service can be realized.

A transmission path control device is connected to a management server and a router device located on the same area as the transmission path control device. The transmission path control device determines whether a corresponding router device has a port directed to an end area when receiving a virtual lease line (VLL) establishing request including a start area and the end area of the VLL. If not, the transmission path control device transmits the VLL establishing request to a default transmission path control device. If yes, the transmission path control device determines which router devices are transmission nodes constituting the VLL and determines which ports are ports to be connected. The transmission path control device further connect the ports used to connect one by one, thus to establish the VLL.

A transmission management method, used for calculating a virtual lease line (VLL), the method includes: providing a user interface for input a start area and an end area of the VLL; receiving a request including the start area and the end area; determining whether there is a port of a router device located on the start area is directed to the end area; if not, determining whether there is a port of a default router device directed by the router device by default is directed to the end area; determining the router devices constituting the VLL when determining there is a router device is directed to the end area; and determining which ports of the router devices are ports to be connected to another port, and producing VLL information including the router devices constituting the VLL and the ports to be connected.

Various embodiments relate to a communication system and associated method for determining the address of a service access point (SAP) when establishing a service over a packet data network. A customer SAP connected to the provider SAP can request a link-local address for another customer SAP at the far end of the packet data network. When a service such as a virtual leased line (VLL) has not been established, the provider SAP may generate the address for the customer based on another value, eg its own media access control (MAC) address. The generated address may then allow services to become established, which may allow neighbor solicitation and neighbor advertisement packets to be sent, analyzed, and extracted. The provider SAP then replaces the generated address with the address extracted from the neighbor solicitation or advertisement packet received after service establishment.

A transmission management method, includes: receiving a request for establishing an on-demand virtual lease line from a first electronic device when a request is made to communicate with a second electronic device. geographic positions of the first electronic device, the second electronic device, and routers are determined. A data transmission direction is determined according to the geographic positions of the first and the second electronic device. Routers located between the first electronic device and the second electronic device are determined gradually. Positions and workloads of the routers located between the first and second electronic device are analyzed, and an optimal transmission path is determined according to the positions and workloads of the router. The first electronic device and the second electronic device are controlled to communicate with each other via the determined optimal transmission path.

A radio base station apparatus includes a processor configured to hold an electronic certificate for a communication carrier and a key pair to be used for authentication of the electronic certificate, for each communication carrier that requests a use of the radio base station apparatus, in a case where a connection request is received from the communication carrier, use the key pair and the electronic certificate for a use communication carrier being the communication carrier that has performed the connection request to authenticate whether or not the use communication carrier is the communication carrier to which a connection to the radio base station apparatus is permitted, and, in a case where an attempt of the authentication succeeds, construct a virtual leased line for connecting the radio base station apparatus with a connection device functioning as an interface with the radio base station apparatus in a communication facility of the use communication carrier, and transfer data in accordance with control from the communication facility of the use communication carrier, the control being performed through the connection device.

An image processing system includes: a first processor that is mounted on an image processing apparatus including at least one of an image forming unit that performs processing of forming an image on a medium or an image scanning unit that performs processing of scanning an image on a medium; and a second processor that is mounted on a control apparatus that is connected to the image processing apparatus via a virtual leased line, and controls a part of at least one of the processing of forming an image on a medium or the processing of scanning an image on a medium performed by the image processing apparatus, in which the first processor is configured to: in a case where an event to be recorded in a log occurs in the image processing apparatus, transmit log information regarding the event to the control apparatus via the virtual leased line being connected or after connecting the virtual leased line in a case where the virtual leased line is not connected; and the second processor is configured to: in a case where the event occurs in the control apparatus, store log information regarding the event in a storage unit of the control apparatus; and store log information transmitted from the image processing apparatus via the virtual leased line in the storage unit of the control apparatus.

A transmission path management device includes a communication unit, a storage unit, and a processor. The communication unit is used to connect to a number of path control devices located in different areas. The processor is used to run a number of modules including an interface providing module to provide a user interface provided for a user to input a start area and an end area of a virtual lease line (VLL) to be established; a request receiving module to receive a VLL establishing request; an assignment module to assign a VLL identifier code to the VLL to be established; and a sending module to send the VLL establishing request and the VLL identifier code to the path control device located in a start area, thus to trigger the path control device located in the start area and related path control devices to determine and establish the VLL.

A network system capable of enhancing connection performance includes a first connection object, a second connection object, and a virtual lease line (VLL) network. The VLL network includes a number of router devices, a number of path control devices, and a management server. Each router device is coupled to one corresponding path control device, and each router device and the corresponding path control device are located in one corresponding area. The management server is coupled to all of the path control devices; the management and the path control devices establish a VLL constituted by a number of router devices according to areas in which the first connection object and the second connection object locates. The first connection object and the second connection object are coupled to each other and communicate with each other via the VLL established in the VLL network.