-
公开(公告)号：US20140133653A1
公开(公告)日：2014-05-15
申请号：US13653521
申请日：2012-10-17
Applicant: Cisco Technology, Inc.
Inventor： Gilberto Loprieno , Giacomo Losio
IPC: H04L9/32
CPC classification number: H04L9/3297 , H04L9/3226 , H04L63/0428 , H04L63/083 , H04L63/123
Abstract: An Optical Transport Network (OTN) frame comprises an optical channel payload unit that is divided into a plurality of timeslots. This OTN frame is received at a transmitter and the timeslots are grouped into blocks of timeslots. Two or more blocks of timeslots are selected for encryption and are encrypted/authenticated in parallel to generate an encrypted OTN frame in which only certain blocks of timeslots are encrypted.
Abstract translation: 光传输网络（OTN）帧包括被分成多个时隙的光信道有效载荷单元。 该OTN帧在发射机处被接收，时隙被分组成时隙块。 选择两个或更多个时隙块进行加密，并且并行加密/认证，以生成加密的OTN帧，其中仅某些时隙块被加密。
-
公开(公告)号：US11569924B2
公开(公告)日：2023-01-31
申请号：US17240488
申请日：2021-04-26
Applicant: Cisco Technology, Inc.
Inventor： Gilberto Loprieno , Stefano Binetti , Paolo Sironi
Abstract: A first network element includes trail trace identifier information in an optical network frame. The first network element obtains data to transmit over an optical network link to a second network element. The first network element generates an optical network frame with alignment marker bytes, which are followed by padding bytes. The optical network frame also includes overhead bytes following the padding bytes. The overhead bytes include a Multi-Frame Alignment Signal (MFAS) byte, a link status byte, and reserved bytes. The optical network frame also includes a payload bytes following the overhead bytes. The payload bytes encode at least a portion of the data to transmit to the second network element. The first network element inserts trail trace identifier information into the reserved bytes in the overhead bytes. The trail trace identifier information identifies the first network element as a source of the optical network frame.
-
公开(公告)号：US20190199449A1
公开(公告)日：2019-06-27
申请号：US15849959
申请日：2017-12-21
Applicant: Cisco Technology, Inc.
Inventor： Gilberto Loprieno , Scott Roy Fluhrer , Emanuele Umberto Giacometti
CPC classification number: H04B10/85 , H04J3/1652 , H04L9/14 , H04L63/0428 , H04L63/123 , H04Q11/0066
Abstract: A method divides data traffic into multiple optical transport units formatted according to an optical transport network (OTN) standard. The multiple optical transport units include a master optical network unit and one or more slave optical network units. Each optical network unit includes overhead and a payload. The overhead includes used overhead specifically defined in the OTN standard and unused overhead not specifically defined in the OTN standard. The method encrypts each optical network unit with a respective one of multiple encryption keys, defines security control parameters identifying the multiple encryption keys, and inserts the security control parameters into the unused overhead of a first slave optical network unit among the one or more slave optical network units. The method transmits the optical network units in encrypted form.
-
公开(公告)号：US10182039B2
公开(公告)日：2019-01-15
申请号：US15015548
申请日：2016-02-04
Applicant: Cisco Technology, Inc.
Inventor： Gilberto Loprieno , Davide Codella
Abstract: At a source network device, data is compiled into a plurality of data blocks for transmission in a data frame over a network to a destination network device. The plurality of data blocks are arranged into a plurality of data block groups such that each data block group comprises a predetermined number of data blocks. Encryption information is generated for each of the plurality of data blocks groups. The encryption information identifies an encryption key for each of the plurality of data block groups. Overhead data configured to allow the destination network device to align and decode the data frame is generated. The data frame is transmitted from the source network device to the destination network device such that the encryption information for each of the plurality of data block groups is transmitted consecutively with a respective data block group, and a portion of the overhead data is transmitted prior to each consecutive transmission of encryption information with a data block group.
-
15.发明授权公开(公告)号：US10154322B2
公开(公告)日：2018-12-11
申请号：US14734596
申请日：2015-06-09
Applicant: Cisco Technology, Inc.
Inventor： Giovanni Tandi , Gilberto Loprieno
Abstract: An optical system is provided that converts optical signals received over an optical trunk from a first optical switch to client optical signals intended for a second optical switch. The first and second optical switches operate in accordance with a Fiber Channel (FC) protocol. An interruption of the optical signals on the optical trunk is detected. Responsive to the interruption, a Not Operational State (NOS) message sent to the second optical switch is delayed so as to delay triggering of an FC link initialization in the second optical switch. While the NOS message is delayed, idle messages are sent to the second optical switch.
-
Patent Agency Ranking
公开(公告)号：US20140362989A1
公开(公告)日：2014-12-11
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 。
-
公开(公告)号：US11637632B2
公开(公告)日：2023-04-25
申请号：US17647277
申请日：2022-01-06
Applicant: Cisco Technology, Inc.
Inventor： Gilberto Loprieno , Paolo Sironi , Emanuele Umberto Giacometti , Francesco Mariani
Abstract: A method includes mapping, by an optical transceiver, a received first OTU4 signal to a first FlexO frame without interleaving the first OTU4 signal into an ODUC signal prior to mapping the first OTU4 signal to the first FlexO frame. The method also includes communicating, by the optical transceiver, the first FlexO frame with the mapped first OTU4 signal to a coherent DSP over a first FOIC.
-
公开(公告)号：US20220345239A1
公开(公告)日：2022-10-27
申请号：US17240488
申请日：2021-04-26
Applicant: Cisco Technology, Inc.
Inventor： Gilberto Loprieno , Stefano Binetti , Paolo Sironi
Abstract: A first network element includes trail trace identifier information in an optical network frame. The first network element obtains data to transmit over an optical network link to a second network element. The first network element generates an optical network frame with alignment marker bytes, which are followed by padding bytes. The optical network frame also includes overhead bytes following the padding bytes. The overhead bytes include a Multi-Frame Alignment Signal (MFAS) byte, a link status byte, and reserved bytes. The optical network frame also includes a payload bytes following the overhead bytes. The payload bytes encode at least a portion of the data to transmit to the second network element. The first network element inserts trail trace identifier information into the reserved bytes in the overhead bytes. The trail trace identifier information identifies the first network element as a source of the optical network frame.
-
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.
-
公开(公告)号：US10887052B2
公开(公告)日：2021-01-05
申请号：US16663833
申请日：2019-10-25
Applicant: Cisco Technology, Inc.
Inventor： Gilberto Loprieno , Stefan Langenbach
Abstract: A first device receives, over a first communications link, a container frame having a payload of a first length. The payload of the container frame includes multiple optical transport unit (OTU) frames of a second length. The first length is not a multiple of the second length. Each of the OTU frames includes an optical data unit (ODU) frame, a sequence of forward error correction (FEC) bits for the ODU frame, and a sequence of error-identifying bits for the ODU frame. The first device determines, based on the sequences of error-identifying bits, a performance of the first communications link.
-
-
-
-
-
-
-
-
-
Search Results
30
records
(took 0.015 seconds)
