47 results about "PWE3" patented technology

Core of the invention is conversion module of private MAC address and conversion module of public MAC address in Ethernet exchange equipment. When MPLS message enters into Ethernet exchange equipment, the Ethernet exchange equipment packages the message with private MAC address, and forwards the message to the port corresponding to destination public MAC address based on private MAC address so as to realize forwarding MPLS message through Ethernet exchange equipment. Thus, on second layer and / or third layer of Ethernet exchange chip, the invention also can support multiple operations including PWE3, L2VPN and MPLS flux engineering etc. based on MPLS.

Systems and methods for sinking port mirrored from one or more identified flows of data to any node in a network are provided. Moreover, the network is configured to convey the mirrored data to the sink, without the need for any facilities expressly dedicated for this purpose. The present invention removes the requirement to co-locate the sink port within the same logical node. The present invention uses a mirrored flow configured as a provisioned layer two point-to-point connection, such as a Switched Permanent Virtual Circuit (SPVC), Pseudo-Wire (PWE3), a Virtual Local Area Network (VLAN) cross-connect, Provider Backbone Bridging-Traffic Engineering (PBB-TE), and the like. The node with the mirrored port is configured to create copies of the appropriate set of packets (i.e., ingress, egress packets, or both based on provisioning and based on the identified flow), and to forward the packets to the sink port through the provisioned point-to-point connection.

The present invention provides a method and device for realizing edge-to-edge pseudowire simulation. In the uplink process and downlink process, a multi-protocol label switching processing card is set. The label switching message is forwarded to the processing card; the processing card encapsulates the switching message into a data message in an edge-to-edge pseudowire emulation format, and switches the message to the switching chip; during the downlink process, the switching chip Forwarding the received external MPLS message to the processing card; the processing card encapsulates the data message in the exchange message into the internal MPLS message, and encapsulates the switched The message is switched to the switch chip. The invention adds a processing card, so that the PWE3 service is realized on the IP-DSLAM, and after the internal MPLS message is switched to the switch chip of the main control board, the MPLS message can guarantee that the user access circuit information will not be lost.

An architecture for providing service mediation in a network having a Layer-2 domain and an MPLS domain includes at least one Layer-2 provider edge device in communication with a first customer site; at least one Layer-2 edge device in communication with the Layer-2 provider edge device; at least one MPLS mediation edge device in communication with the Layer-2 edge device; and at least: one MPLS provider edge device in communication with both the MPLS mediation edge device and a second customer site. An end-to-end connection is established using native Layer-2 signaling, if any, in the Layer-2 domain and PWE3 signaling protocols in the MPLS domain. The MPLS mediation edge device resolves associations between Layer-2 edge devices and MPLS provider edge devices. The service is “mediated” in the sense that native Layer-2 signaling is terminated at the MME, and a new domain, i.e., pseudowire, is established across the MPLS domain.

The present invention relates to the field of network communications. An Optical Line Terminal (OLT) allocates a Pseudo Wire (PW) label of an access segment PW for a port, and establishes a corresponding relationship between the port information and the PW label; and carries the corresponding relationship between the port information and the PW label in a label management message, and sends the label management message to an Optical Network Unit (ONU) so that the ONU updates a forwarding table, in which the label management message adopts an access network management protocol. As a consequence, a problem of supporting Pseudo Wire Emulation Edge-to-Edge (PWE3) on a data plane of an access segment of an access network is solved under the conditions that device complexity of the ONU is not increased and a configuration of the ONU is slightly changed.

A method for realizing failure detection comprises the steps of receiving a virtual circuit connectivity verification VCCV-PING message which carries transmitting terminal state information; analyzing the VCCV-PING message, judging whether the transmitting terminal has a failure according to the transmitting terminal state information, and locally setting failure identification when the transmitting terminal has a failure. An embodiment of the invention further provides a device and a system for realizing the failure detection. As the VCCV-PING message is the basic OAM requirement of PWE3, using the extended VCCV-PING message to realize the failure detection is capable of supporting the whole network to realize network failure detection, realizing complete operation mapping, and reducing system realization complexity, development cost and maintenance cost.

The invention discloses a method for realizing time division multiplex (TDM) data transmission. The method comprises the following steps of: transforming a TDM data of a physical layer sent by a local user to a data of a link layer, judging a format of the data of the link layer and performing a corresponding pretreatment operation on the data of the link layer having different formats, PW packaging the pretreated data having different formats, sending to an opposite terminal PE after adding a PW label, paring an outer PW label of a PW packet sent by the opposite terminal PE, judging the format of the data in the PW packet, performing a corresponding de-capsulation operation on the PW packet according to different data formats, transforming the de-capsulated data having different formats into the corresponding data of the link layer, and transforming into the TDM data of the physical layer and then sending to the local user. The invention also discloses a device for realizing time division multiplex (TDM) data transmission. The method and the device of the invention can realize imitating the TDM service on PSN and can further improve the function of the current PWE3 system.

The present disclosure provides an apparatus and a method for PWE3 access. The method includes: after receiving non-Ethernet data transmitted by a local user, a local PE performs inner layer PWE3 frame format encapsulation and an outer layer L2VPN frame format encapsulation on the non-Ethernet data in sequence, and then transmits the encapsulated data to an opposite PE; after receiving the data transmitted by the opposite PE, the local PE performs an outer layer L2VPN frame format de-encapsulation and an inner layer PWE3 frame format de-encapsulation on the date in sequence, and then transmits, to the local user, the non-Ethernet data obtained after the two de-encapsulations. The present disclosure can implement the pseudo wire emulation edge-to-edge access for non-Ethernet with saving label space of the PE, and can avoid multiple exchanges of Pseudo Wire (PW) labels.