Patents by Inventor Neil R. Ketley

Neil R. Ketley 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).

  • Technique for efficiently and dynamically maintaining bidirectional forwarding detection on a bundle of links
    Patent number: 9300563
    Abstract: In one embodiment, a plurality of links between a network node and another network node are configured as a link bundle. The network node establishes one or more standby bidirectional forwarding detection (BFD) sessions. Each standby BFD session is associated with one or more links of the link bundle. The network node establishes an active BFD session. The active BFD session is associated with one or more links of the link bundle. In response to non-receipt of returned BFD messages for the active BFD session, one or more new active BFD sessions are selected from the one or more standby BFD sessions. In response to non-receipt of returned BFD messages for the one or more new active BFD sessions, it is determined that the link bundle has failed.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: March 29, 2016
    Assignee: Cisco Technology, Inc.
    Inventors: Reshad A. Rahman, David P. Toscano, Sylvain Masse, David D. Ward, Neil R. Ketley
  • TECHNIQUE FOR EFFICIENTLY AND DYNAMICALLY MAINTAINING BIDIRECTIONAL FORWARDING DETECTION ON A BUNDLE OF LINKS
    Publication number: 20140019614
    Abstract: In one embodiment, a plurality of links between a network node and another network node are configured as a link bundle. The network node establishes one or more standby bidirectional forwarding detection (BFD) sessions. Each standby BFD session is associated with one or more links of the link bundle. The network node establishes an active BFD session. The active BFD session is associated with one or more links of the link bundle. In response to non-receipt of returned BFD messages for the active BFD session, one or more new active BFD sessions are selected from the one or more standby BFD sessions. In response to non-receipt of returned BFD messages for the one or more new active BFD sessions, it is determined that the link bundle has failed.
    Type: Application
    Filed: September 16, 2013
    Publication date: January 16, 2014
    Applicant: Cisco Technology, Inc.
    Inventors: Reshad A. Rahman, David P. Toscano, Sylvain Masse, David D. Ward, Neil R. Ketley
  • Technique for efficiently and dynamically maintaining bidirectional forwarding detection on a bundle of links
    Patent number: 8543718
    Abstract: A technique efficiently and dynamically maintains bidirectional forwarding detection (BFD) on a bundle of links in a computer network. According to the novel technique, one or more “standby” BFD sessions may be established on one or more corresponding line cards (LCs), the LCs having one or more links of the bundle (bundle links). Once established, one of the standby BFD sessions may be selected as an “active” BFD session based on activity of one of the bundle links of the corresponding LC. Also, BFD messages may be transmitted from one of the bundle links of the active BFD session, e.g., the link receiving BFD messages. In response to inactivity of the transmitting link (e.g., failure, removal, etc.), the active BFD session may switch to another available active bundle link, and if no other active bundle links are available to the active BFD session, one of the standby BFD sessions is selected as the new active BFD session.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: September 24, 2013
    Assignee: Cisco Technology, Inc.
    Inventors: Reshad A. Rahman, David P. Toscano, Sylvain Masse, David D. Ward, Neil R. Ketley