Patents by Inventor Phil SCHAEFER

Phil SCHAEFER has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Systems and methods to detect and recover from a loop in an Ethernet ring protected network
    Patent number: 10091023
    Abstract: Loop detection systems and methods in an Ethernet Ring Protected network include, subsequent to creating a loop detection service on all nodes in the network, periodically transmitting a loop detection frame on both ports of the node; responsive to failing to receive the loop detection frame at the node, determining no loop exists in the ring; and, responsive to receiving the loop detection frame on a received port at the node, determining a loop exists in the ring and automatically implementing one or more recovery actions.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: October 2, 2018
    Assignee: Ciena Corporation
    Inventors: Balaji Subramaniam, Paul Nahlous, Terry Mitchell, Phil Schaefer
  • SYSTEMS AND METHODS TO DETECT AND RECOVER FROM A LOOP IN AN ETHERNET RING PROTECTED NETWORK
    Publication number: 20170180153
    Abstract: Loop detection systems and methods in an Ethernet Ring Protected network include, subsequent to creating a loop detection service on all nodes in the network, periodically transmitting a loop detection frame on both ports of the node; responsive to failing to receive the loop detection frame at the node, determining no loop exist in the ring; and, responsive to receiving the loop detection frame on a received port at the node, determining a loop exists in the ring and automatically implementing one or more recovery actions.
    Type: Application
    Filed: December 21, 2015
    Publication date: June 22, 2017
    Inventors: Balaji SUBRAMANIAM, Paul NAHLOUS, Terry MITCHELL, Phil SCHAEFER