Patent application number | Description | Published |
20090016341 | LABEL ASSIGNING METHOD, LABEL REPLACING METHOD AND LABEL SWITCHING ROUTER - A label assigning method for use when a label being used in a unicast Label Switched Path (LSP) between an upstream Label Switching Router (LSR) and a downstream LSR is to be used in a multicast LSP between the upstream LSR and the downstream LSR. The assignment method includes the steps of releasing the label in the unicast LSP, and assigning the label to the multicast LSP. A label replacing method for use when a first label being used in a unicast LSP between an upstream LSR and a downstream LSR is to be used in another LSP between the upstream LSR and the downstream LSR. The replacement method includes the steps of re-assigning a second label for the unicast LSP and releasing the first label in the unicast LSP. These two processes are directed to efficiently establishing a multicast LSP when a conflict of labels occurs between the multicast LSP and an existing unicast LSP. | 01-15-2009 |
20090028154 | Method And Device For Learning Forwarding Feature Information - A method and device for learning data forwarding information includes a forwarding table recording forwarding feature information stored in a switch device, and wherein corresponding service importance levels for the forwarding feature information are configured. The method includes receiving new forwarding feature information, determining whether the forwarding table is full; if full, determining whether to write the new forwarding feature information into the forwarding table according to the service importance level of the new forwarding feature information; otherwise recording the new forwarding feature information into the forwarding table, and recording service importance level corresponding to the new forwarding feature information. The disclosure also provides a device for learning data forwarding information. | 01-29-2009 |
20090097484 | Method And System For Distributing Labels - A method, system and apparatus for distributing labels for multicast services. The method deploys a primary controller in the network to manage the label space on a centralized basis; the primary controller distributes a label for the multicast service upon obtaining a request for a label from the multicast service source, which ensures that unicast services and multicast services use different labels, thus solving conflicts between unicast labels and multicast labels and between multicast labels; the primary controller can also query labels for multicast members. The apparatus for distributing labels includes a message interaction unit, a information maintenance unit and a label distribution unit. | 04-16-2009 |
20090190595 | METHOD, SYSTEM AND DEVICE FOR TRANSMITTING OVERHEAD INFORMATION - A method for sending overhead information includes: encoding customer information into a 64B/66B customer information code block; encoding configured overhead information into a 64B/66B code block, and marking the code block as an overhead code block; and sending the customer information code block and the overhead code block, where M of every N sent code blocks are overhead code blocks (M and N are positive integers and M is smaller than N). A method for receiving overhead information includes: receiving the 64B/66B code block; identifying the overhead code block according to an identifier of the overhead code block and extracting overhead information from the overhead code block; and decoding the customer information code blocks other than the overhead code blocks and obtaining the customer information. Through the foregoing methods, fixed bandwidth of the overhead information is ensured, and the OAM information transmission performance is improved. | 07-30-2009 |
20100061725 | METHOD AND DEVICE FOR MAPPING ETHERNET CODE BLOCKS TO OTN FOR TRANSMISSION - A method and a device for mapping Ethernet code blocks to an optical transport network (OTN) for transmission are provided. In the method, 10G Ethernet code blocks are mapped to an OTN frame corresponding to an optical channel payload unit | 03-11-2010 |
20100086300 | METHOD AND DEVICE FOR MAPPING ETHERNET CODE BLOCKS TO OTN FOR TRANSMISSION - A method and a device for mapping Ethernet code blocks to an optical transport network (OTN) for transmission are provided. According to a preset mapping manner, 40 Gigabit (40 G) Ethernet code blocks are mapped to a payload area of a general frame provision (GFP) frame, or a plurality of 40 G Ethernet code blocks is interleaved into a payload area of an OTN frame, or 40 G Ethernet code blocks are mapped to an OTN frame according to an asynchronous bit-stream mapping manner. Thus, specific solutions for mapping 40G Ethernet code blocks having an encoding rate lower than a minimum payload bandwidth of the OPU3 to the OTN for transmission is provided. | 04-08-2010 |
20100091794 | SENDING METHOD, RECEIVING AND PROCESSING METHOD AND APPARATUS FOR ADAPTING PAYLOAD BANDWIDTH FOR DATA TRANSMISSION - A sending method, a receiving and processing method and an apparatus for adapting a payload bandwidth for data transmission are provided. In the method, N coding blocks containing 64B are acquired, in which N is an integer greater than or equal to 2, and the acquired N coding blocks are converted into a (64*N+1)B coding block, so that a required linear rate is reduced after conversion, thereby reducing requirements for the payload bandwidth of a bearer layer, and satisfying the payload bandwidth required for transmitting 40 Gigabit Ethernet (40 GE) or 10 Gigabit Ethernet (10 GE) MAC frames in an optical transport network (OTN). | 04-15-2010 |
20100098415 | METHOD AND DEVICE FOR MAPPING ETHERNET CODE BLOCKS TO OTN FOR TRANSMISSION - A method and a device for mapping Ethernet code blocks to an optical transport network (OTN) for transmission is provided. According to a preset mapping manner, four groups of 10 Gigabit (10G) Ethernet code blocks are uniformly mapped to a payload area of a general frame provision (GFP) frame, or each group of 10G Ethernet code blocks is interleaved into the payload area of each row of the OTN frame. Thus, specific solutions for mapping four groups of 10G Ethernet code blocks having an encoding rate smaller than the minimum payload bandwidth of the OPU | 04-22-2010 |