Ciena Corporation

Other

Kevin Estabrooks

Daniel Rivaud

Gregory Vanderydt

Bashar Abdullah

Jeffrey Randal Norman

Geraldine Ruth Civil

Adrianus Van Gaal

Greg Vanderydt

Michael Alain Gazier

Michael John Wingrove

Stephen Donald Crooks

Michael J Windgrove

Systems and methods include receiving Interior Gateway Protocol (IGP) messages from one or more network elements in a network; extracting timing information from any of the IGP messages where the timing information includes timing reference for a given network element for any of frequency, phase, and time; and storing the timing information. The steps can further include one of displaying a Graphical User Interface of the network including an operational timing trail for any of frequency, phase, and time; and displaying the timing information for the one or more network elements via a Command Line Interface (CLI).

Network timing topology discovery and visualization using interior gateway protocols

Systems and methods for detecting a rogue network device at a physical layer include monitoring physical layer characteristics of a wired link at both a first network device and a second network device; determining whether there are detectable variances in the physical layer characteristics; and detecting a rogue network device inserted on the link based on the detectable variances.

Physical layer rogue device detection

Systems and methods for analyzing power or energy consumption parameters measured at each of a plurality of nodes or Network Elements (NEs) of a network are provided. A system, according to one implementation, includes a processing device and a memory device configured to store computer logic. The computer logic, for example, may be configured to enable the processing device to receive a power consumption value corresponding to an amount of energy expended at each of a plurality of NEs in a network. Also, the computer logic may be configured to enable the processing device to calculate a cumulative power consumption total from the power consumption values associated with the NEs arranged along a path in the network.

Calculating cumulative power consumption along a path in a network

Systems and methods for detecting a rogue network device at a physical layer include obtaining physical layer characteristics of a link between a first network device and a second network device; analyzing the physical layer characteristics of the link; and detecting the rogue network device based on the analyzed physical layer characteristics, wherein the rogue network device was inserted in the link and causes detectable variances in the physical layer characteristics. The physical layer characteristics can include one of noise introduced in clock frequency and jitter.

Systems and methods include, in a node having a plurality of Media Access Control (MAC) addresses with a source MAC address for an application and with the node connected to Network Termination Equipment (NTE) having flooding disabled, configuring the node to periodically send a packet to the NTE with the source MAC address for the application to pre-populate a forwarding database in the NTE; and transmitting the packet to the NTE periodically such that the NTE receives the packet and installs the source MAC address in its forwarding database for reachability thereto despite the disabled flooding. The plurality of Media Access Control (MAC) addresses can include a chassis MAC address and the source MAC address for the application. The packet can be a no-operation packet which requires no processing by the NTE except installation of the source MAC address for the application.

Pre-populating media access control (MAC) address tables in networks where flooding of MAC addresses is blocked

A pluggable module includes an interface configured to connect to a connector associated with a device having internal circuits; an optical interface configured to connect to a network path, to enable communication between the internal circuits and the network path; and a signal interface configured to connect to a second pluggable module in the device, wherein the signal interface connects to the second pluggable module as an out-of-band channel that operates independently from a backplane of the device and the internal circuits.

Frontplane communication network between multiple pluggable modules on a single faceplate

Systems and methods include, for a plurality of services operating on a plurality of network elements in a network, determining attributes for one or more events that periodically occur; and providing a configuration based on the determined attributes to the plurality of network elements for configuring the associated network elements, wherein the configuration controls and coordinates when actions associated with the one or more events occur, across the plurality of network elements and across one or more protocol layers.

Coordinated and scheduled standards-based intervals in network elements

Systems and methods of coordinating and scheduling intervals in a network element in a network include configuring one or more attributes of a plurality of timer-based events at the network element, wherein the plurality of timer-based events include protocol-based actions which are performed responsive to expiry of an associated timer, and wherein the one or more attributes define when the protocol-based actions occur; operating one or more services at one or more protocols; and performing associated protocol-based actions based on the one or more attributes and based on expiry of the associated timer.

A system that includes (i) a device having connectors connected to pluggable modules external to the device and (ii) the pluggable modules exchanging signals with the device via the connectors. In particular, the pluggable modules includes a first pluggable module and a second pluggable module that further exchange a supplemental signal with each other and bypassing the connectors.

Clock synchronization in a network includes receiving, by a slave network device from a master network device via at least a intervening network device, a timing packet comprising a transmission timestamp and a residence time. The transmission timestamp is based on a master clock of the master network device. The residence time corresponds to a delay of the timing packet traversing the intervening device. Clock synchronization in a network further includes generating, by the slave network device in response to receiving the timing packet, a receiving timestamp based on a slave clock of the slave network device, and generating, based at least on the transmission timestamp, the residence time, and the receiving timestamp, a time difference between the master clock and the slave clock. Clock synchronization in a network further includes synchronizing, based at least on the time difference, the master clock and the slave clock.

Pseudowire clock recovery

A device cover for temperature control of a component device includes at least one heating element enclosed using the device cover, and multiple sections. Each section is located at a distinct location on the device cover and includes a reflection angle for the distinct location. The reflection angle is configured to reflect heat to the component device enclosed using the device cover, the heat originating from the at least one heating element.

Oven controlled crystal oscillator device cover

A system includes a first blade including a first side of the first blade, a second side of the first blade, a front of the first blade, and a back of the first blade. The system further includes a second blade including a first side of the second blade, a second side of the second blade, a front of the second blade, and a back of the second blade. The system further includes a first side plane including a first physical communication channel configured to communicatively connect the first blade to the second blade via the first side of the first blade and the first side of the second blade.

Side plane

A pluggable optical module, including: a pluggable module unit including an optical connector disposed at a front end portion thereof and an electrical connector disposed at a rear bottom portion thereof, wherein the optical connector is configured to be optically coupled to an optical fiber, and wherein the electrical connector is configured to be electrically coupled to an electrical connector disposed on an electrical board. Optionally, the pluggable module unit includes a pluggable module adapter secured to a pluggable module body. The electrical connector is then disposed at a rear bottom portion of the pluggable module adapter. A pluggable optical module aggregator, including: a housing; an electrical board; a plurality of electrical connectors and a bulk electrical connector consolidating and terminating the plurality of electrical connectors and accessible from the exterior of the housing; and a plurality of optical connectors and a bulk optical connector consolidating and terminating the plurality of optical connectors and accessible from the exterior of the housing.

Mid-board pluggable optical devices, assemblies, and methods

An in-situ temperature compensation method of an electronic device and an associated temperature sensor includes providing airflow from a vortex air gun to a board including the electronic device and the associated temperature sensor; determining an associated offset at various temperatures in an operating range; and creating and storing a calibration table in memory including the associated offsets at the various temperatures, the calibration table is used during operation of the electronic device for compensation due to temperature variation. A system includes a board, an electronic device disposed to the board; a temperature sensor disposed on the board; a processor disposed to the board and communicatively coupled to the electronic device and the temperature sensor; and instructions that cause the processor to determine an associated offset at various temperatures in an operating range, and create and store a calibration table in memory with the associated offsets at the various temperatures.

Manufacturing automation of in-situ temperature compensation information

A system for managing holdover. The system may include a local oscillator device. The system may include a phase locked loop (PLL) device coupled to the local oscillator device and a reference clock source. The PLL device may obtain a reference clock signal from the reference clock source to produce an extracted clock signal. The system may include a drift monitoring device coupled to the local oscillator device and the PLL device. The drift monitoring device may determine an amount of oscillator drift within the local oscillator device using the extracted clock signal and an oscillator signal from the local oscillator device. The system may include a drift compensation device coupled to the drift monitoring device and the PLL device. The drift compensation device may transmit a drift compensation signal to the PLL device based on the amount of oscillator drift.

Growing community of inventors

Nepean, Canada

Kevin Estabrooks