A communication system transmits relay data through a communication path including a plurality of sections in which different communication schemes are used. A relay communication device is provided between a first section and a second section which are adjacent sections. The relay communication device includes a receiving unit receiving the relay data from the first section through a frame of a first communication scheme, and a relaying unit configuring, in a frame of a second communication scheme used to transmit the relay data to a relay destination, signal quality information representing signal quality calculated for a physical link in each of the sections through which the relay data is transmitted before arriving at the relay communication device, and outputting the frame of the second communication scheme to the second section.

Embodiments of this application provide a method. A receiving device determines that a first PHY needs to be added to a first FlexE group in a working state; performs deskew on the first PHY or each PHY in the first FlexE group based on a received data stream corresponding to the first PHY and a received data stream corresponding to each PHY in the first FlexE group, and restores a data stream corresponding to a client from a PHY in the first FlexE group; and if skew between the data stream corresponding to the first PHY and the data stream corresponding to each PHY in the first FlexE group after the deskew is performed is zero, restores a data stream corresponding to a client from a PHY in a second FlexE group. Flexibility of adjusting a PHY in a FlexE group in a working state is improved.

A node includes circuitry configured to interface a stream of encoded blocks with the blocks including i) data blocks from one or more clients and ii) overhead blocks, wherein a calendar is utilized for block distribution in the stream of encoded blocks; and circuitry configured to process one or more Operations, Administration, and Maintenance (OAM) fields in the overhead blocks, wherein the OAM fields are associated with the one or more clients in the data blocks.

This application discloses a method and an apparatus for adjusting a bandwidth of a transmission channel in flexible Ethernet. When the bandwidth of the transmission channel needs to be increased, bandwidths of all nodes are successively increased based on a direction reverse to a flow direction of service data, and when the bandwidth of the transmission channel needs to be decreased, bandwidths of all nodes are successively decreased based on the flow direction of the service data. In this way, a probability of a loss of service data transmitted from upstream to downstream is reduced in a process of adjusting the bandwidth of the transmission channel, and this improves reliability of service data transmission.

Systems and methods of end-to-end data path integrity validation of a service with a data path at Layer 1 and Layer 2 implemented by a network element include, responsive to initiation of a test, messaging between network elements in the data path to coordinate defect and statistics collection at each of the network elements in the data path; receiving results for the defect and statistics collection from each of the network elements in the data path; and summarizing the received results to form a consolidated report for the test across all of the network elements in the data path.

Systems and methods for detecting patterns in data from a time-series are provided. According to some implementations, the systems and methods may use network topology information combined with object recognition techniques to detect patterns. One embodiment of a method includes the steps of obtaining information defining a topology of a multi-layer network having a plurality of Network Elements (NEs) and a plurality of links interconnecting the NEs and receiving Performance Monitoring (PM) metrics and one or more alarms from the multi-layer network. Based on the information defining the topology, the PM metrics, and the one or more alarms, the method also includes the step of utilizing a Machine Learning (ML) process to identify a problematic component from the plurality of NEs and links and to identify a root cause associated with the problematic component.

A method for transmitting a client signal in an optical transport network includes: dividing a payload of an optical payload unit signal into m first-granularity tributary slots; dividing one of the m first-granularity tributary slots into n second-granularity tributary slots, where a rate of the first-granularity tributary slot is n times that of the second-granularity tributary slot, m is a positive integer, and n is a positive integer greater than 1; mapping a first client signal onto a payload in which one or more of the n second-granularity tributary slots are located; adding an overhead of the first-granularity tributary slot and an overhead of the second-granularity tributary slot for the optical payload unit signal, to generate an optical data unit signal; and sending the optical data unit signal.

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.

Techniques for emulating a time division multiplexed (TDM) circuit using a packet switched network are described. First and second packet nodes are installed in a communication network. The first TDM node and second TDM node form a first span in the TDM circuit. First and second fiber connections are disconnected from the first and second TDM nodes, and connected to the first and second packet nodes. A portion of TDM data transmission across the first span is emulated using a packet connection formed by the first packet node and the second packet node. The TDM data transmission includes transport overhead data, and the packet connection emulates the transport overhead data.

Embodiments providing improved systems and methods deploying, monitoring, and troubleshooting optical physical layer networks are needed. In one embodiment, networks are first constructed in a specialized network factory, where they are racked, provisioned, audited, and tested by relevant experts in each technology. Then the equipment is custom-cratedwith all cards, patch cords, labels, and provisioning in placebefore being shipped to field locations. A production network health baseline is captured that creates a set of norms that later performance data can be compared against. Once the network is operational, the network health is monitored and compared against the baseline. If there's a deviation sufficient to satisfy a user-defined rule, a remedial action can be triggered. In another embodiment, a method isolates a problem in an optical transport network.