Ciena Corporation

Rockstar Consortium US LP

Nortel Networks Corporation

Rpx Clearinghouse LLC

Electronics and Telecommunications Research Institute

Korea Advanced Institute of Science and Technology

Ciena Luxembourg S.a.r.l.

Marc Holness

Asheesh Jadav

Bashar Abdullah

Nigel Lawrence Bragg

David Allan

David Wright Martin

Jie Hu

Dinesh Mohan

Simon P Parry

Donald Russell Ellis

Cory Gordon

Robert Friskney

Paul Littlewood

Wei-Chiuan Chen

Abdullah Bashar

Yang Yang

Stephen Daniel Shew

Paul Allen Bottorff

Malcolm Betts

June-Koo Rhee

Himanshu Shah

Jeong-dong Ryoo

David Gilson

Eric Stewart Davison

Somen Bhattacharya

Bheom-Soon Joo

Kyle Gosselin-Harris

Ashesh Mishra

Hossein Baheri

Madhavi Raghavendra Joshi

Pramod Kumar Aggarwal

Paul Curtis

Marc-Andre Rochon

Ankit Sood

Jin-Sung Im

Mradula Neginhal

Zahir Uddin Ahmad

Ravi Halappa

Gerard Leo Swinkels

Darek Robert Skalecki

Norival R Figueira

Kelly Donald Fromm

Bernard Francois St-Denis

Michael Watford

Gerald Smallegange

Ross Caird

Rajneesh Mishra

Nicola Benvenuti

Peng He

Chris Ramsden

Geraldine Ruth Civil

Vaibhav Srivastava

Jeffrey Randal Norman

Brett Caldwell

Onder Yazar

Thor Odd Andres Ramsland

Priyanshu Lnu

David Keith Bainbridge

Ritesh Ralhan

Dinesh E Mohan, Jr

Himani Chawla

Karthick Ramanarayanan

Gautam Khetrapal

Marc Andre Rochon

Beata Mirek

Prabhakar Nagral

Dennis E Hayes

Gerard S Swinkels

Selvamani Ramasamy

Bernard St-denis

Paul Bottorff

Simon Parry

Aspects of the subject disclosure may include, for example, identifying a network topology that includes a group of nodes and a number of segment reference values corresponding to network segments between pairs of nodes of the group of nodes. A message including a path index that corresponds to a particular network path of an indexed arrangement of unique paths is received, at a node of the group of nodes. The particular network path includes a particular sequence of nodes corresponding to the path index. The path index is decoded to obtain a decoding of the particular network path and a next node along the network path is identified according to the decoding of the particular network path allowing the message to be forwarded to the identified next node. Other embodiments are disclosed.

Source routing techniques that utilize encoded network paths

A method, implemented by a controller, includes steps of: subsequent to converting a bespoke model to Open Application Programming Interface (API) Schema that is Custom Resource Definition (CRD), receiving the CRD; receiving a target that is a data record that represents a network entity; receiving a configuration model instance for the target, wherein the configuration model instance includes one or more values that are compliant to the CRD and the one or more values represent a desired state of the network entity; receiving an observed state of the network entity; and determining drift between the observed state and the desired state.

Cloud-native approach to support desired state model reconciliation with networking equipment

A network device includes one or more ports that are interfaces configured to communicate with other network devices in a network; and circuitry configured to obtain a plurality of data elements, based on operation of the network device, check a predicate with any of the plurality of data elements, and perform any of, responsive to the predicate, i) stream a first set of one or more of the plurality of data elements to a management system, ii) cease a stream of a second set of one or more of the plurality of data elements, and iii) a combination thereof.

Constraint-based event-driven telemetry

Systems and methods implemented by a network element in a G.8032 ring include steps of operating an Operations, Administration, and Maintenance (OAM) session with an adjacent network element; and detecting an optical bypass in the G.8032 ring based on the OAM session. The steps can include flushing a forwarding database of the network element based on the optical bypass. The steps can include detecting prior to the optical bypass, that a neighboring node includes a ring block; and subsequent to the optical bypass, installing a new channel block. The optical bypass enables faster protection switching and the present disclosure incorporates an optical bypass in G.8032.

G.8032 with optical bypass

Systems and methods include one or more processing devices configured to implement a Network Operating System (NOS) that is configured to switch frames, wherein the one or more processing devices are connected to a plurality of Virtual Network Functions (VNFs) configured to operate in a chain having a service flow, and wherein the NOS is configured to implement frame classification for the frames in order to distribute the frames to the plurality of VNFs, such that some of the plurality of VNFs process a subset of the frames.

Systems and methods for sideline processing in a virtual network function

Systems and methods for extending Ethernet Virtual Private Network (EVPN) protocols are provided. A Link Aggregation Group (LAG), according to one implementation, includes a plurality of Ethernet Segments (ESs) and a plurality of service ports configured to communicate over the plurality of ESs. The service ports are configured to enable an operator device to access an EVPN to receive Layer 2 (L2) and Layer 3 (L3) Ethernet services. Also, the service ports are configured to enable the operator device to operate with multi-homing functionality to receive the L2 and L3 Ethernet services via redundant paths associated with the plurality of ESs. The services ports are further configured to respond to operator commands, whereby the operator commands include one or more operator commands related to switching among the redundant paths.

Responding to operator commands in a multi-homing ethernet virtual private network (EVPN)

Systems and methods include obtaining a table having a plurality of addresses each having a plurality of attributes and classifications; responsive to a requirement to reduce a size of the table, reducing a number of the plurality of addresses based on one or more reduction approaches that use any of the plurality of attributes and classifications; and obtaining an output table having some or all of the plurality of addresses for a table receiver. The table can be obtained via control plane components including one or more of Interior Gateway Protocol (IGP) and Border Gateway Protocol (BGP). The requirement to reduce the size is based on a size of the table and a size of memory associated with the table receiver.

Controlling routing behavior during router table-memory exhaustion events

A network element configured to implement an Ethernet Virtual Private Network (EVPN) Virtual Private Wire Service (VPWS) Flexible Cross-Connect (FXC) local switching service includes a plurality of ports; and a switching fabric configured to switch traffic between the plurality of ports; wherein a set of ports is configured in a distributed Link Aggregation Group (LAG) with two nodes, and an inter-chassis link configured with a second network element, and wherein, responsive to a failure of the inter-chassis link, a distribution state of members in the distributed LAG is coordinated.

EVPN VPWS FXC local switching connectivity

A logical Network Interface Device (NID) includes a first NID connected to a peer NID; a second NID connected to the peer NID and communicatively coupled to the first NID, wherein the first NID and the second NID are each connected to a network element for redundant communication to the peer NID, and wherein the first NID actively operates an active maintenance endpoint in an Operations, Administration, and Maintenance (OAM) session with the peer NID, and wherein the active maintenance endpoint synchronizes OAM session data with a dormant maintenance endpoint at the second NID. The dormant maintenance endpoint becomes the active maintenance endpoint responsive to a protection switch, and the dormant maintenance endpoint has the OAM session data in a database based on synchronization with the first NID.

Retaining active operations, administration, and maintenance (OAM) sessions across multiple devices operating as a single logical device

Operations, Administration, and Maintenance (OAM) scaling systems and methods are implemented by a network function performed by one of a physical network element and a virtual network element executed on one or more processors. The OAM scaling method includes providing N packet services, N is an integer; and, responsive to determined OAM session scaling limits, providing OAM sessions for the N packet services in an oversubscribed manner, wherein the determined OAM session scaling limits include M OAM sessions supported by the network function, M is an integer and less than N.

Scaling operations, administration, and maintenance sessions in packet networks

Telemetry systems and methods are provided in which data is streamed from to a remote location based on predicate affirmation of pre-established conditions of a system. In one embodiment, a network device comprises a processing device and a memory device configured to store logic instructions. When executed, the logic instructions are configured to cause the processing device to obtain a first set of one or more data elements indicative of one or more conditions of a network in which the network device operates. Also, the logic instructions are configured to cause the processing device to monitor the first set of one or more data elements to determine if a predefined predicate is affirmed and execute a response action when the predefined predicate is affirmed.

A Virtual Network Function (VNF) executed on a processing device includes one or more first Terminal Access Point (TAP) interfaces which are virtual network kernel interfaces and which are each mapped to an associated second TAP interface associated with a Network Operating System (NOS), wherein the associated second TAP interface is mapped to an associated physical port; and a processor configured to receive, transmit, and process select frames via the one or more first TAP interfaces, wherein the VNF is in a sideline configuration of a service flow, only receiving and transmitting the select frames of the service flow.

A network device includes a plurality of ports; a switch configured to switch data frames between the plurality of ports; and a processor configured to obtain one or more measurement values based on network traffic associated with the data frames, responsive to detection of a threshold-crossing event of a measurement value, wherein the threshold-crossing event is one of an indication and a precursor of one or more of an abnormal and unexpected event associated with the network traffic, cause collection of a plurality of time series of measurement values of the network traffic by one or more components in the network device, and send a combination of the plurality of time series as a telemetric data stream for analysis by a network management system related to the abnormal/unexpected event.

Threshold crossing events for network element instrumentation and telemetric streaming

System and methods of ingress packet metering include receiving a plurality of flows combined to form an envelope with a specific bandwidth, wherein the envelope is defined such that unused bandwidth from higher rank flows is usable by lower rank flows; admitting packets from the plurality of flows based on committed tokens and excess tokens; determining unused tokens in a time interval; and distributing the unused tokens based on configured weights of the plurality of flows within the envelope. The unused tokens can be provided from a lower rank flow to a higher rank flow. The unused tokens can be determined utilizing Two Rate Three Color Marker (trTCM) metering. The receiving can be at a User-Network Interface (UNI), a Network-Network Interface (NNI), or an External NNI (ENNI) port in a node.

Systems and methods for distributing unused bandwidth of metered flows in an envelope based on weights

A method for connecting a plurality of networks. The method may include establishing a first network link between a first network element and a second network element. The first network link may implement an interconnection between a first network and a second network. The method may include establishing a second network link between the first network element and a third network element. The first network element, the second network element, and the third network element may be located on a virtual network. The method may include detecting, over the virtual network, a first network event regarding the first network link. The method may include, in response to detecting the first network event, adjusting the interconnection between the first network and the second network. The method may include disregarding a second network event regarding the second network link.

Interconnecting networks

Growing community of inventors

Nepean, Canada

Marc Holness