Alcatel Lucent

Nokia of America Corporation

Alp Dibirdi

Daniel Lafleur

Michel Rochon

Andre Poulin

John C Fischer

Erel Ortacdag

Andrew Molotchko

Hansen Chan

Michael Long

Piero Sorrini

This disclosure generally discloses a tunnel-level fragmentation and reassembly capability configured to support tunnel-level fragmentation and reassembly of a packet being transported via a tunnel between a tunnel source node and a tunnel destination node. The tunnel-level fragmentation and reassembly capability may be configured to support tunnel-level fragmentation and reassembly of packets in a manner tending to prevent reassembly errors, that could cause malformed packets or packet drops at the tunnel destination nodes, due to multiple parallel tunnel contexts of the tunnel which may correspond to multiple parallel entry points into the tunnel at the tunnel source node. The tunnel-level fragmentation and reassembly capability may be configured to support tunnel-level fragmentation and reassembly of packets within various types of communication networks, for various types of tunnels, or the like.

Tunnel-level fragmentation and reassembly based on tunnel context

Various exemplary embodiments relate to a method for routing an incoming packet to a destination, the method including: receiving, at a network device, the incoming packet; determining a destination address of the packet; determining that the destination address is not included in a routing table on the network device; sending a message to a companion device, wherein the message includes the destination address; receiving from the companion device, at the network device, a routing indicator for the destination address; and sending the packet towards a destination consistent with the routing indicator.

Secondary lookup for scaling datapath architecture beyond integrated hardware capacity

Various exemplary embodiments relate to a method performed by a network node device for provisioning the device on a network, the method including detecting one or more ports, sending discovery messages from one or more of the discovered ports, receiving an offer message including network information, storing the received network information, receiving a promotion message, and listening for discovery messages. In some embodiments, the method further includes receiving one or more messages including configuration information. In various embodiments, the configuration information includes one or more of node interface parameters, management parameters, OAM parameters, and MPLS parameters.

Automating network build-out in self building networks

Various embodiments relate to a system and related method of measuring at least one transport link's performance in a communications network. An originating device controlled by a customer may generate testing frames that are transported to a receiving device also controlled by the customer through the at least one transport link that connects the two devices. In some embodiments, the transport links may transfer the testing frames while the transport links are transporting other data traffic. The receiving device may parse incoming frames and, upon identifying the testing frames, may generate echoing response frames. In some embodiments, the echoing response frames may be placed in one of a series of priority-based service queues. The originating device may then receive the response frames through the transport links and may measure the stream of incoming frames to measure and analyze the transport links' performance.

In-service throughput testing in distributed router/switch architectures

Various embodiments relate to a communications system and related method of advertising available bandwidth capacities of leased links. After leasing a link to an operator device, a provider or operator may monitor the available capacity of the leased link and generate an advertising frame when the actual available capacity is below the defined leased capacity of the link. The advertising frame may be an L2 Ethernet frame in a form similar to the routing protocol used in the communications network to avoid additional strain and complexity in the network due to additional protocols for traffic engineering. After propagating the new information throughout the network using the advertising frame operator devices may redirect or shape their traffic of data in response to the updated available capacity on the leased link.

Communication available transport network bandwidth to L2 ethernet nodes

Embodiments of the invention employ specially adapted P2MP and MP2P transmission techniques to communicate traffic of a TDM based SCADA system over an IP/MPLS based network. Advantageously, by specially adapting P2MP and MP2P transmission techniques to carry TDM based SCADA traffic over an IP/MPLS network, an existing TDM based SCADA system can be migrated to an IP/MPLS network and operated in an easy to manage and bandwidth efficient manner as compared to a solution that employs point-to-point connections between a SCADA master node and subsystems over an IP/MPLS network. Furthermore, since TDM based SCADA equipment would not need to be replaced with IP based SCADA equipment in such a migration, significant equipment and installation costs associated with such replacement can be avoided.

Circuit emulation service for carrying time division multiplexed SCADA traffic

A system and method for interface association between an ATM interface and a GigE/IP interface of a routing switch platform (RSP) to enable network management of a redundant pair of RSPs which serve as an interface between GigE/IP and ATM are provided.

Growing community of inventors

Andover, MA, United States of America

Alp Dibirdi