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公开(公告)号：US11716151B2
公开(公告)日：2023-08-01
申请号：US17382975
申请日：2021-07-22
Applicant: Cisco Technology, Inc.
Inventor： Luca Della Chiesa , Louis Gwyn Samuel , Paul Polakos , Scott Fluhrer , Santanu Ganguly
Abstract: A method for routing in a quantum network is provided. The method may include receiving parameters including a fidelity with coherence decay time and an entanglement generation rate for each quantum node in a mesh quantum network by a controller, the controller being configured to communicate with each quantum node of a plurality of quantum nodes in the mesh quantum network. Each quantum node includes a quantum memory and a processor. The method may also include analyzing the fidelity with coherence decay time and the entanglement generation rate to yield a determination of a path fidelity with a path coherence decay time and a path entanglement generation rate between at least one pair of quantum nodes. The method may further include, based on the determination, selecting a quantum communication path from a source node to a destination node.
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公开(公告)号：US20220103480A1
公开(公告)日：2022-03-31
申请号：US17032874
申请日：2020-09-25
Applicant: Cisco Technology, Inc.
Inventor： Luca Della Chiesa , Christian Schmutzer , Patrice Brissette
IPC: H04L12/803 , H04L12/911 , H04L12/891 , H04L12/707 , H04L12/46
Abstract: Techniques are presented herein for load-balancing a sequence of packets over multiple network paths on a per-packet basis. In one example, a first network node assigns sequence numbers to a sequence of packets and load-balances the sequence of packets on a per-packet basis over multiple network paths of a network to a second network node. The second network node buffers received packets that are received over the multiple network paths of the network from the first network node and re-orders the received packets according to sequence numbers of the received packets.
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公开(公告)号：US10820440B2
公开(公告)日：2020-10-27
申请号：US15487148
申请日：2017-04-13
Applicant: Cisco Technology, Inc.
Inventor： Joel Richard Goergen , Rohit Dev Gupta , Prashanth Pavithran , Manigandan Boopalan , Luca Della Chiesa
Abstract: The present technology provides minimal touch cable guides for rack-mounted devices. The minimal touch cable guides disclosed herein provide structures for routing cables from field replaceable units installed in a rack mounted device in such a way that cables of different types are not crossed and provides a mechanism for adjusting installed cabling to permit access to otherwise obscured field replaceable units. Such adjustment of cabling is provided in a controlled manner that does not impair the performance the installed cabling.
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公开(公告)号：US09800630B2
公开(公告)日：2017-10-24
申请号：US14662860
申请日：2015-03-19
Applicant: Cisco Technology, Inc.
Inventor： Mark A. Gustlin , Oded Trainin , Luca Della Chiesa
IPC: H04B10/00 , H04L29/06 , H04L12/801 , H04B10/516 , H04L12/931 , H04J14/00 , H04J14/02
CPC classification number: H04L65/4069 , H04B10/516 , H04J14/02 , H04L47/10 , H04L47/13 , H04L47/39 , H04L49/352
Abstract: An apparatus is provided that includes n communication channels, and m communication media interfaces, and v virtual lanes. V is a positive integer multiple of the least common multiple of m and n. An information stream is transferred into data and alignment blocks striped across all of the v virtual lanes, the blocks being communicated from the virtual lanes onto the communication channels. The blocks are received on the communication channels. Each of the communication channels transmits a different portion of the blocks striped across all of the v virtual lanes.In more particular embodiments, v>=n>=m. The communication media interfaces can be electrical and optical. Each of the communication channels can include a SerDes interface operating at least 5 Gigabits per second. Furthermore, each of the m communication media interfaces is configured to transmit a different stream of information over a single optical fiber.
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公开(公告)号：US20150358431A1
公开(公告)日：2015-12-10
申请号：US14300480
申请日：2014-06-10
Applicant: Cisco Technology, Inc.
Inventor： Gilberto Loprieno , Luca Della Chiesa , Giacomo Losio
CPC classification number: H04L69/04 , H04J3/1658 , H04J2203/0089 , H04J2203/0094 , H04L69/14
Abstract: Techniques are described herein for enabling mapping of virtual lanes for data streams for transmission over an optical transport network (OTN). Line encoded data blocks of a first data stream are distributed at an endpoint device in an OTN. The line encoded data blocks of the first data stream are distributed across a plurality of second data streams such that the second data streams can be processed at a lower data rate than a data rate associated with the first data stream. A transcoding operation is performed on the data packets of each of the second data streams to generate transcoded data packets. The transcoded data packets are processed such that the transcoded data packets of each of the second data streams can be sent over the OTN at the lower data rate.
Abstract translation: 这里描述了用于实现用于数据流的虚拟通道的映射以便在光传输网络（OTN）上传输的技术。 第一数据流的线路编码数据块分布在OTN中的端点设备处。 第一数据流的行编码数据块被分布在多个第二数据流上，使得可以以比与第一数据流相关联的数据速率更低的数据速率处理第二数据流。 对每个第二数据流的数据分组执行代码转换操作，以生成代码转换的数据分组。 对经转码的数据分组进行处理，使得每个第二数据流的经转码的数据分组可以以较低的数据速率在OTN上发送。
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Patent Agency Ranking
公开(公告)号：US09083516B2
公开(公告)日：2015-07-14
申请号：US13910347
申请日：2013-06-05
Applicant: Cisco Technology, Inc.
Inventor： Luca Della Chiesa , Gilberto Loprieno , Giacomo Losio
CPC classification number: H04L9/12 , H04B10/25 , H04J3/1658 , H04J2203/0085 , H04L9/0855 , H04L25/14 , H04L2209/24
Abstract: A data stream with a given data rate is distributed into a plurality of virtual lanes or streams, each with a lower data rate than the data stream. Virtual lanes permit the use of lower cost electronics at the optical-electrical conversion points. Security information is generated that includes a unique initialization vector. The security information is distributed or allocated across some or all of the of the virtual data streams in a virtual lane alignment marker in a portion of the alignment marker used to maintain direct current (DC) transmission balance, but that otherwise does not provide useful information.
Abstract translation: 具有给定数据速率的数据流被分配到多个虚拟通道或流，每个虚拟通道或数据流具有比数据流更低的数据速率。 虚拟通道允许在光电转换点使用较低成本的电子元件。 生成包含唯一初始化向量的安全信息。 安全信息在用于维持直流（DC）传输平衡的对准标记的一部分中的虚拟通道对准标记中的一些或全部虚拟数据流上分布或分配，但否则不提供有用的信息 。
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公开(公告)号：US12301467B2
公开(公告)日：2025-05-13
申请号：US17968071
申请日：2022-10-18
Applicant: Cisco Technology, Inc.
Inventor： Luca Della Chiesa , Christian Schmutzer , Raghupathi Somashekarappa
Abstract: A method is provided to compensate for differential delay among a plurality of paths between first and second nodes in a network. The method may involve measuring delay for each of the plurality of paths for a plurality of sub-flows transmitted between the first node and the second node on respective paths of the plurality of paths. The plurality of sub-flows are obtained by splitting a traffic flow. The method involves determining delay differences among the delay for each of the plurality of paths, and adjusting, based on the delay differences, a queue delay associated with a respective flow of the plurality of sub-flows on one or more of the plurality of paths to achieve a path delay that is equal to a target path delay for each of the plurality of paths.
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公开(公告)号：US20220224410A1
公开(公告)日：2022-07-14
申请号：US17145862
申请日：2021-01-11
Applicant: Cisco Technology, Inc.
Inventor： Raghunandan Annavajjala , Sudhir Kayamkulangara , Christian Schmutzer , Luca Della Chiesa , Rayen Mohanty
IPC: H04B10/032 , H04L12/707 , H04Q11/00
Abstract: In one example, a first Provider Edge (PE) node is configured to communicate with a second PE node through a packet-switched network and with a third PE node through the packet-switched network. The first PE node communicates with a fourth PE node via the second PE node. The fourth PE node is configured to communicate with the second PE node over a working path through a time-division multiplexing transport network. The first PE node exchanges, with the fourth PE node, protection information. Based on exchanging the protection information, the first PE node communicates with the fourth PE node via the third PE node. The fourth PE node is further configured to communicate with the third PE node over a protection path through the time-division multiplexing transport network.
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公开(公告)号：US20210211786A1
公开(公告)日：2021-07-08
申请号：US17202984
申请日：2021-03-16
Applicant: Cisco Technology, Inc.
Inventor： Gilberto Loprieno , Luca Della Chiesa , Stefano Binetti , Stefano Piciaccia , Giovanni Osnago
IPC: H04Q11/00
Abstract: A method of obtaining a measure of asymmetry between optical fibers of a forward and reverse paths is provided in order to synchronize clocks of optical nodes connected by asymmetrical optical fiber paths. The method includes receiving, at first and second arrival times, from a first optical network device, a first optical signal transmitted on a first optical fiber and a second optical signal transmitted on a second optical fiber, calculating a first time difference between the second arrival time and the first arrival time. The method includes determining a measure of asymmetry between the first optical fiber and the second optical fiber based on the first time difference and a second time difference between a first time of transmission by the first optical network device of the first optical signal and a second time of transmission by the first optical network device of the second optical signal.
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公开(公告)号：US20190109881A1
公开(公告)日：2019-04-11
申请号：US16203962
申请日：2018-11-29
Applicant: Cisco Technology, Inc.
Inventor： Mark A. Gustlin , Oded Trainin , Luca Della Chiesa
IPC: H04L29/06 , H04L12/931 , H04B10/516 , H04L12/801
Abstract: In one embodiment, an apparatus includes n electrical communication channels, m optical communication media interfaces, and a plurality of muxes. The plurality of muxes are configured to receive an information stream, the information stream carried over the n electrical communication channels and the m optical communication media interfaces. The plurality of muxes are further configured to transform the information stream from v virtual lanes, each virtual lane comprising a plurality of data blocks from the information stream and an alignment block, wherein v is a positive integer multiple of the least common multiple of m and n.
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