Infinera Corporation

Infinera Coporation

Khuzema Pithewan

Biao Lu

Rajan Rao

Mohit Misra

Ping Pan

Ashok Kunjidhapatham

Anthony Jorgenson

Radhakrishna Valiveti

Jan Bialkowski

Ann Gui

Sri Mohana Satya Srinivas Singamsetty

Maneesh Jain

Muhammad Yaaseen

Snigdho Chandra Bardalai

Satyajeet Singh Ahuja

Iftekhar Hussain

Tjandra Trisno

Ramnarayan Srinivasan

Robert G Bryttegard

Rajkumar Pennadam Ramamoorthy

Abhijit Kulkarni

Yalin Wang

Keshava M Elliadka

Methodologies and systems that pass signals between control planes of nodes within a FlexE Network also conforming to the Generalized Multiprotocol Label Switching (GMPLS) protocol are described. The signals passed between the control planes conform to the GMPLS protocol and comprise a FlexE Ethernet Group Number and identify at least one Ethernet PHY conforming to the requirements of IEEE 802.3-2015. The Flexible Ethernet Group Number and the at least one Ethernet PHY are stored in non-transitory memory accessible by a node within the FlexE Network. Then, the node configures a FlexE Group based upon the Flexible Ethernet Group Number and the at least one Ethernet PHY.

FlexE GMPLS signaling extensions

A method and node are disclosed. In the method, circuitry of a first node generates a link state advertising message including bandwidth information indicative of unreserved number of optical channel data unit containers for a plurality of different types of signals supported by an interface of the first node. The link state advertising message is transmitted from the first node to a plurality of second nodes within a mesh network.

TE-link bandwidth model of ODU switch capable OTN interfaces

A method includes the steps of: (1) generating, by circuitry of a first node, an advertising message including (a) a working path bandwidth demand; (b) an identification of at least two communication links in a shared risk link group of the working path; and (c) at least one protecting path and a bitmap indicative of failure of at least one first communication link in the shared risk link group that causes the at least one protecting path to be used; and (2) transmitting the advertising message from the first node to second nodes within a mesh network.

Demand advertisement method for shared mesh protection path computation

Systems and methods for accessing network configuration data identifying one or more working path(s) configured to transport data between source and destination nodes, wherein multiple working paths are prioritized, and including at least one first diversity weight of a first value indicative of at least one communication link in the working path(s), and at least one second diversity weight of a second value indicative of at least one communication link outside of the working path(s); calculating a disjoint protection path with the network configuration data, the first diversity weight, and the second diversity weight; the disjoint protection path including at least the source node and the destination node and at least one communication link that is mutually exclusive from the at least one communication link of the first set; and outputting at least one setup signal to configure the disjoint protection path within the mesh network.

Disjoint path computation for arbitrary directed graph

Methods and nodes are disclosed for OAM configuring one or more tandem connection monitoring layers through GMPLS signaling during GMPLS sub-network connection (SNC) establishment. Additionally, methods and nodes are disclosed for OAM configuring one or more tandem connection monitoring layers through GMPLS signaling after GMPLS sub-network connection establishment, that is, for existing connections.

OAM in OTN networks: GMPLS signaling for TCM

Nodes and methods are disclosed for protection and restoration to protect against multiple failures for multiple paths involved for the same service in mesh networks, including, determining, by circuitry of a first node in a mesh network, a failure of a working path between the first node and a second node, wherein the second node, when triggered by the failure of the working path, switches to a protection path. Methods further include establishing through transmission of at least one signal by circuitry of the first node at least one recovery path, for example, a restored-working path, after determining the failure of the at least one working path, wherein the at least one restored-working path carries a duplicate of the data traffic transmitted on the protection path in case of failure of the protection path.

Multi-level recovery in transport networks

A method comprising the steps of receiving, with circuitry at a first node, a signal indicative of a request to set up an optical channel data unit label switched path between the first node and a second node in a network. Time slots for a plurality of types of signals to be transmitted from the first node to the second node are reserved, and a set up message is transmitted from the first node to the second node. The set up message identifies the plurality of signal types and the reserved time slots. The optical channel data unit label switched path is then provided between the first and second nodes.

GMPLS signaling for networks having multiple multiplexing levels

A method for detecting the liveliness and synchronizing the control-plane and data-plane on protecting connections in a shared mesh network environment through methods for probing the protecting connection conditions by sending in-band messages; and synchronization of control plane and data plane by using LSP-ping messages on the protecting connections.

Supporting OAM on protecting connections in shared mesh protection environment

A method comprising the steps of receiving a signal indicative of a failure of a working connection in a mesh network having a headend node, a tailend node and an intermediate node, and having a protecting connection, and transmitting an activation message via the protecting connection from at least one of the headend node and the tailend node to the intermediate node for activating the protecting connection.

Growing community of inventors

Bengaluru, India

Khuzema Pithewan