Hatteras Networks

Horizon Technology Funding Company V LLC

Matt Squire

Anthony Matteo Gallo

Brian John Hassink

Stephen Suryaputra

John Lynch

Tim Zimmer

Rich Williams

Faults are detected and recovered from in a multiprotocol label switching (MPLS) network by communicating packets between a first node and a second node in the MPLS network using a set of prioritized label switch path (LSP) pairs. A failure to receive a relatively constant rate of packets during a predetermined time interval is detected at the first node. Packets are sent from the first node to the second node using a backup LSP pair responsive to detecting the failure. Packets are then sent from the second node to the first node using a backup LSP pair responsive to receiving packets at the second node on the backup LSP pair.

Methods, systems, and computer program products for detecting and/or correcting faults in a multiprotocol label switching network by using redundant paths between nodes

Methods, devices and computer program products for self partitioning a data network are provided. A network device that is using an address of another network device is identified, the network is automatically partitioned to eliminate the potential conflict, and address conflict resolution is initiated. Partitioning the network may include closing a port over which the routing packet was received from the network device that advertised the conflict, or may include closing the logical connection to that network device. A routing database may be cleared of information previously received from the network device that advertised the conflict so that no routes exist through that device any more. Conflict resolution may include assigning a different address to the network device identified as having a conflicting address, and then allowing the identified network device to communicate with other network devices using the newly assigned address.

Methods and apparatus for self partitioning a data network to prevent address conflicts

A packet is classified by associating a network layer address with a service, obtaining the data link layer address for that network layer address, and associating a packet with that service if the data link layer destination address associated with the packet matches the data link layer address associated with the service.

Methods, systems, and computer program products for classifying a packet based on a destination address

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Raleigh, NC, United States of America

Matt Squire