58 results about "Carrier Ethernet" patented technology

A Provider Network Controller (PNC) addresses the challenges in building services across Next Generation Network (NGN) architectures and creates an abstraction layer as a bridge, or glue, between the network transport and applications running over it. The PNC is a multi-layer, multi-vendor dynamic control plane that implements service activation and Layer 0-2 management tools for multiple transport technologies including Carrier Ethernet, Provider Backbone Transport (PBT), Multi-protocol Label Switching (MPLS), Transport MPLS (T-MPLS), optical and integrated networking platforms. Decoupling transport controls and services from the network equipment simplifies service creation and provides options for carriers to choose best-in-class equipment that leverages the PNC to enable rapid creation and management of transports and services. The PNC provides Service-Oriented Architecture (SOA) interfaces to abstract transport objects expressly designed to support both wholesale and retail services, and supports service offerings with varied bandwidth and Quality of Service (QoS) requirements, thus achieving enterprise Ethernet economics.

An Ethernet metric system and methodology which provides comparable measurements over a data link layer for use in network engineering and Service Provider (SP) performance monitoring. The Ethernet metric system of the present invention utilizes a measurement appliance known as a nodal member for measuring various Ethernet and IP metrics. A plurality of nodal members is used to make one-way or round-trip measurements over asymmetrical paths. The system includes a database for storing measurement data recorded by the plurality of nodal members. A workstation is also contemplated to facilitate system configuration and reporting of measurement data. The system further includes at least one service daemon for interfacing between the plurality of nodal members and the database. Additionally, the service daemon instructs the plurality of nodal members to create vectors and obtain vector configuration from the database. The service daemon processes results data transmitted from the nodal members to the database.

Systems and methods with dynamic Connectivity Fault Management (CFM) and Continuity Check Messages (CCMs) that enable dynamic configurations to avoid limitations associated with static reconfigurations. Variously, a network, a method, and a network element are configured to implement a dynamic CFM method for dynamic notifications and actions taken based thereon between Maintenance End Points (MEPs). The systems and methods may also include a CCM attribute adjustment method between two MEPs, a CCM suspension and / or resumption method between two MEPs, and a MEP auto-discovery and leaving method. Advantageously, the systems and methods may be utilized in a variety of contexts including controlled maintenance, in-service software upgrades, network congestion, discovery of new remote MEPs, and the like to enable dynamic configurations between MEPs. The systems and methods may also apply to Carrier Ethernet, Multiprotocol Label Switching-Transport Profile (MPLS-TP), and the like.

The invention discloses a method for constructing a multicast tree in a two-layer Ethernet and network node equipment. The method comprises the following steps of: calculating broadcasting trees which take each node in a network as a root node according to network topology information; acquiring multicast service attributes of a multicast source node and a multicast receiving node based on a flooding mechanism; searching a broadcasting tree which takes the multicast source node as the root node in the broadcasting trees which take each node in the network as the root node according to the multicast service attributes of the multicast source node and the multicast receiving node; and constructing the multicast tree from the multicast source node to the multicast receiving node based on the searched broadcasting tree. By adopting the method and the network node equipment, the multicast tree which can converge rapidly can be constructed in the two-layer Ethernet in any topological structure.

A Provider Network Controller (PNC) addresses the challenges in building services across Next Generation Network (NGN) architectures and creates an abstraction layer as a bridge, or glue, between the network transport and applications running over it. The PNC is a multi-layer, multi-vendor dynamic control plane that implements service activation and Layer 0-2 management tools for multiple transport technologies including Carrier Ethernet, Provider Backbone Transport (PBT), Multi-protocol Label Switching (MPLS), Transport MPLS (T-MPLS), optical and integrated networking platforms. Decoupling transport controls and services from the network equipment simplifies service creation and provides options for carriers to choose best-in-class equipment that leverages the PNC to enable rapid creation and management of transports and services. The PNC provides Service-Oriented Architecture (SOA) interfaces to abstract transport objects expressly designed to support both wholesale and retail services, and supports service offerings with varied bandwidth and Quality of Service (QoS) requirements, thus achieving enterprise Ethernet economics.

A Carrier Ethernet method includes receiving a request to initiate an Ethernet Operations, Administration, and Maintenance (OAM) session at a local device, setting up the OAM session at the local device responsive to the request, transmitting a Protocol Data Unit (PDU) from the local device to a remote device with information related to the OAM session and the request contained therein, and receiving the PDU at the remote device and setting up the OAM session at the remote device based on the information in the PDU. The OAM session can include Ethernet Frame Loss Measurement and can be initiated only at the local device without requiring operator involvement at the remote device

Apparatus and methods for intelligent deployment and transition from a first network infrastructure to a second network infrastructure. Various embodiments of the present disclosure are directed to, among other things, methods and apparatus that leverage tunneling of Ethernet ring network technologies. In one exemplary embodiment, a modified implementation of the ITU-T G.8032 data link protocol is combined with Multiprotocol Label Switching (MPLS) transport networks to provide Carrier Ethernet and Retail Ethernet services. Unlike existing network infrastructure, the exemplary MPLS network aggregates traffic between the base station (BS) and mobile switching center (MSC) within a logical ring network topology.

A method of fault notification in a carrier Ethernet having the capability of generating and transmitting OAM packets having flag fields, comprises inserting a bit in one of the flag fields to indicate the presence of service-affecting information in the OAM packets, detecting the presence of the inserted bit at the end of a data path, and performing a service protection action in response to the detection of the inserted bit prior to parsing the information in the message. One type of service protection action is protection switching.

A system and method are supplied to provide multiple private networks. The system can include a Provider Backbone Bridge Traffic Engineering (PBB / TE) interface or interfaces configured to receive a plurality of data stream types each associated with an Instance Service Identifier (I-SID) from a Metropolitan Area Network (MAN) or public carrier Ethernet. A plurality of local area network (LAN) ports can be configured to communicate data to a plurality of LANs. A switching process is provided between the PBB / TE interface and the LAN ports. The switching process can be configured to bind individual data stream types from subdivided data streams each represented by an I-SID to each of the respective LAN ports. In addition, the switching process can communicate packets between the PBB / TE interface and the bound LAN ports

The invention discloses a processing method of connecting a switch with Ethernet that has three layers directly to a host computer route, which is used for preventing a data packet whose aim IP is an IP address of the host computer from being washed into a CPU If the switch with Ethernet that has three layers has an ARP of a directly connected host computer but has no MAC of the computer host, comprising the following procedures: (a) a switch receives an address resolving protocol (APR) packet delivered by certain equipment, learns APR information from the APR packet and get a corresponding media access control (MAC) address according to the IP address in the APR information; (b) the switch searches a MAC table on the MAC address according to the MAC address, if the MAC address of the equipment can not be learned, then a direct route of the IP address is added, so as to lead the switch desert the information when the information is transmitted by the switch through the directly connected route. By adopting this method, the operation of the switch is not affected when the CPU can not process other packets.

A method for setting up connection channel of network includes receiving uplink message from user by access node, generating the first field and the second field of operation firm Ethernet frame head by access node according to user position information and parameter mapping table, adding operation firm Ethernet frame head in received uplink message automatically by access node, sending uplink message in Ethernet according to said frame head, using access collection node to remove off operation firm Ethernet frame head in uplink message from Ethernet network and transmitting uplink message to another network.

A Carrier Ethernet network comprises nodes connected by links. The network supports connectionless traffic flows between nodes. A network management system performs a method comprising: determining when an event has occurred in the network which may change bandwidth usage on a link of the network; determining traffic flows which use the link; determining a total bandwidth demand of the traffic flows using the link; and comparing the total bandwidth demand with a bandwidth capacity of the link. Determining when the event has occurred can include at least one of: receiving an alarm indicating a network fault; receiving a topology change indication from a node of the network.

The present invention provides a novel method for hierarchy of preplanned protected path for both node and link failure in the realm of Carrier Ethernet Technology. In the event of failure in a hierarchy, the traffic is switched from work (primary) path to protected (secondary) path. If such path does not exist within a given hierarchy then traffic is routed through multiple hierarchies until SLA is met YES or no path exists. Hierarchies make the network fault resilient.

The present invention discloses a technical scheme of configuring coaxicial cable-carried Ethernet terminals (CNU), which includes three steps. Firstly, a configured management server records the media access control (MAC) address of an authorized CNU; secondly, when the CNU needs to access the Internet via a coaxicial cable-carried Ethernet head end (CLT), then the CLT sends the MAC address of the CNU to the management server; finally, according to whether the management server records the received MAC address, the management server determines whether the CNU is an authorized CNU, and if theCNU is determined as an authorized CNU, the management server instructs the CLT to configure the CNU. The technical scheme of the present invention realizes the effective management of each CNU in anEOC system by centrally recording the MAC address of each authorized CNU in the management server, which controls the access of CNUs.

A communications system is provided for enabling a plurality of service providers to interconnect via an Ethernet platform, the plurality of service providers employing disparate Ethernet protocols. The system includes a central server and a plurality of switching locations. Each one of the plurality of switching locations is communicatively connected to the central server and to the plurality of service providers. Each of the plurality of switching locations includes a plurality of Ethernet router switches, a monitoring device, a local server coupled to a plurality of databases. Each of the plurality of databases is associated with each of the service providers. A communications media is provided for interconnecting the plurality of switches, the service providers, the router switches, the connectivity device, and the local server. The system enables the service providers to be interconnected on the Ethernet platform by establishing protocol mappings between any two Ethernet protocols associated with corresponding service providers.

An Ethernet switch platform is configured to receive and process a provisioning order to establish a logical virtual circuit interconnecting a physical port associated with a buying carrier and a physical port associated with a selling carrier to set up a private network to private network connection between the buying and selling carriers. The virtual circuit is established with parameters called for in a request for quote (RFQ) initiated by the buying carrier and in a response to the RFQ submitted by the selling carrier. Information from the RFQ and from the response together with information previously stored in a relational database is extracted and used to fill out the provisioning order. The information extracted from the database include profile information and network service information associated with the buying and selling carriers.

The invention relates to a data protection method of a dual-connection network when a first data node and an auxiliary control node are in dual-connection with a second data node through a control node. The data protection method comprises the following steps that: the control node blocks a port directly connected with a protection link when the protection link and a non-protection link are in a serviceable state; and the control node opens the port directly connected with the protection link when the non-protection link fails and the protection link is in the serviceable state. The data protection method of the dual-connection network of the invention improves the anti-failure ability of the dual-connection network, enables the switch speed to satisfy the requirement of a carrier Ethernet, prevents failures such as the data duplication, broadcast storm, and the like of the dual-connection network, and can be used in a plurality of network structures.

A method of fault notification in a carrier Ethernet having the capability of generating and transmitting OAM packets having flag fields, comprises inserting a bit in one of the flag fields to indicate the presence of service-affecting information in the OAM packets, detecting the presence of the inserted bit at the end of a data path, and performing a service protection action in response to the detection of the inserted bit prior to parsing the information in the message. One type of service protection action is protection switching.

Provided is a packet / TDM switch that may classify a type of a received signal based on slot recognition information received from an Ethernet mapping unit or a TDM mapping unit, and may process the received signal using a dedicated switch corresponding to each of the Ethernet mapping unit and the TDM mapping unit according to the type of the received signal.

A Carrier Ethernet method includes receiving a request to initiate an Ethernet Operations, Administration, and Maintenance (OAM) session at a local device, setting up the OAM session at the local device responsive to the request, transmitting a Protocol Data Unit (PDU) from the local device to a remote device with information related to the OAM session and the request contained therein, and receiving the PDU at the remote device and setting up the OAM session at the remote device based on the information in the PDU. The OAM session can include Ethernet Frame Loss Measurement and can be initiated only at the local device without requiring operator involvement at the remote device.

The invention discloses a power terminal communication access network and an optimization method, which aim to achieve rapid optimization, reduce cost and solve the problem of difficulty in planning of the power terminal communication access network. The power terminal communication access network comprises a first-layer Ethernet and second-layer Ethernets, wherein the first-layer Ethernet comprises a high-voltage substation node and all sub-nodes of the high-voltage substation node in a medium-voltage power distribution network, the first-layer Ethernet is an annular network topology, the number of the second-layer Ethernets is the same as the number of 10kV transformer nodes, the 10kv transformer nodes are intersection nodes of the first-layer Ethernet and the second-layer Ethernets, the second-layer Ethernets are annular and tree-shaped network topologies, the power terminal communication access network conforms to a feasible solution boundary condition, and the incremental cost is minimum. The optimization method of the power terminal communication access network relates to an estimation function, a mating algorithm and a variation algorithm in a genetic algorithm framework. By the power terminal communication access network, the efficiency of network planning and optimization is greatly improved, and the algorithm complexity is reduced.

The invention belongs to the field of broadcast television, relates to a coaxial-cable Ethernet over coax (EOC) design, and in particular relates to a coaxial-cable EOC system with an upgrade function and a control method thereof. The coaxial-cable EOC system comprises an optical network unit (ONU), an optical receiver, an EOC headend device, an EOC terminal device and a spliter. The EOC terminal device is in no need of dismantling and reallocating, the numbers of the EOC headend devices and switchboards are not increased, or the EOC headend device and the EOC terminal device are not replaced, thus the bandwidth is increased in accordance with requirements so as to support a user to open more services. The optimal coaxial-cable EOC design provided by the invention is provided with the grading capacity-expending capacity and is easy to upgrade.

The invention relates to a bus system of a logging downhole instrument based on a twisted-pair Ethernet, as well as a logging method, and discloses a bus system of a logging downhole instrument based on a twisted-pair Ethernet. The bus system comprises a downhole instrument which comprises a communication board; a downhole remote transmitter which comprises a communication board that is used as a gateway and a route module; a twisted-pair Ethernet is used as a downhole bus for connecting the downhole instrument and the downhole remote transmitter by communicating means, thereby forming a local area network; the bus system of a logging downhole tool based on the twisted-pair Ethernet is characterized in that the communication board is abutted with the downhole bus and the communication board further comprises an embedded processor, a digital signal processor, an Ethernet controlling chip, an Ethernet exchanging chip and an isolation transformer. Furthermore, the invention relates to a logging method adopting the bus system of the logging downhole instrument.

The invention discloses a method for communicating a packet transport network (PTN) with a double-layer Ethernet and a system thereof. The method comprises the following steps that: when initializing network equipment of the PTN, the network equipment of the PTN, which is accessed to the private network of a user, and the network equipment of the PTN, which is accessed to the public network of an operator, are respectively provided with Ethernet line (E-LINE) services; and after a report transmitted by the user and a report transmitted by the operator enter into the PNT network, and the network equipment provided with the E-LINE services processes and transmits the report transmitted by the user and the report transmitted by the operator by means of E-LINE services to respectively reach an operator network and a user network. The invention further discloses a system for communicating the PTN with the Ethernet. The method and the system can realize the communication between the PTN and the double-layer Ethernet, and improves the expandability of the network equipment of the PTN, thereby saving the operation cost of the operator.

The invention discloses a method for constructing a multicast tree in a two-layer Ethernet and network node equipment. The method comprises the following steps of: calculating broadcasting trees which take each node in a network as a root node according to network topology information; acquiring multicast service attributes of a multicast source node and a multicast receiving node based on a flooding mechanism; searching a broadcasting tree which takes the multicast source node as the root node in the broadcasting trees which take each node in the network as the root node according to the multicast service attributes of the multicast source node and the multicast receiving node; and constructing the multicast tree from the multicast source node to the multicast receiving node based on the searched broadcasting tree. By adopting the method and the network node equipment, the multicast tree which can converge rapidly can be constructed in the two-layer Ethernet in any topological structure.

The invention provides a novel service provider Ethernet loop detection and loop disposing method. The service provider initiates loop detection at ports of an access node and a aggregation node and filters a detection message on a core node side corresponding to the aggregation node; the access node or the aggregation node makes a loop alarm after detecting the loop and performs loop disposing; the loop disposing comprises measures of closing a port and opening after waiting and the measure of filtering and aggregating the detection message by the access node. The service provider Ethernet loop detection and loop disposing method comprises that: the port of the access node initiates loop detection; the port of the aggregation node initiates loop detection; a core node port filters the detection message; the access node makes the loop alarm after detecting the loop and disposes the loop; the aggregation node makes the loop alarm after detecting the loop and performs disposing on the loop. The service provider Ethernet loop detection and loop disposing method enables the service provider Ethernet to effectively detect the loop through unique control on the processes, then performs alarming and disposing on the loop and then requires to check whether the loop disappears according to waiting time.

This invention discloses a method and a system for transmitting data between the Ethernet of a business runner and a customer network including: the Ethernet of a business runner configures service access MAC address for customer network , which is the address of a service access port on the Ethernet edge device, before a data packet is sent into the Ethernet of the business runner from a customer network, it is packaged with an outer MAC head, the source address of which is the source service access MAC address, the destination address is the objective service access MAC address, said data packet is sent to another customer network via the business runner Ether net. This invention realizes that the Ethernet of a business runner screens the MAC address in the customer network and becomes a manageable one.