Patents by Inventor Anand Girish Parthasarathy

Anand Girish Parthasarathy 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).

  • Response to OTUk-BDI for OTN interfaces to restore bidirectional communications
    Patent number: 8666242
    Abstract: In an OTN (Optical Transport Network), an OTN interface of a network element may receive a BDI (Backwards Defect Indicator) signal from a far end network element to which OTN frames are being transmitted. A BDI signal indicates the occurrence of a unidirectional failure in the transmission of OTN frames to which the far end network element responds by switching its routing to the network element. The OTN interface generates an AIS (Alarm Indication Signal) for its network element so that the network element switches network communication channels to the far end network element to ensure bidirectional switching upon a unidirectional failure.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: March 4, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: David Bianchi, Anand Girish Parthasarathy, Ya Xu
  • Proactive protection mechanism based on advanced failure warning
    Patent number: 7724676
    Abstract: In one embodiment, an apparatus can include: (i) logic configured to detect an advanced warning indication, such as for a degraded signal condition, on a first link between first and second network devices, where the detection can utilize a number of corrected bits and forward error correction (FEC), for example; and (ii) logic configured to reroute packet traffic from the first link to a second link when the degraded signal condition is detected.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: May 25, 2010
    Assignee: Cisco Technology, Inc.
    Inventors: Ornan Gerstel, Gabriele Maria Galimberti, Loukas Paraschis, Anand Girish Parthasarathy, Humayun Sohel
  • Response to OTUk-BDI for OTN Interfaces to Restore Bidirectional Communications
    Publication number: 20080304822
    Abstract: In an OTN (Optical Transport Network), an OTN interface of a network element may receive a BDI (Backwards Defect Indicator) signal from a far end network element to which OTN frames are being transmitted. A BDI signal indicates the occurrence of a unidirectional failure in the transmission of OTN frames to which the far end network element responds by switching its routing to the network element. The OTN interface generates an AIS (Alarm Indication Signal) for its network element so that the network element switches network communication channels to the far end network element to ensure bidirectional switching upon a unidirectional failure.
    Type: Application
    Filed: June 5, 2007
    Publication date: December 11, 2008
    Applicant: CISCO TECHNOLOGIES, INC.
    Inventors: David Bianchi, Anand Girish Parthasarathy, Ya Xu
  • Proactive protection mechanism based on advanced failure warning
    Publication number: 20080232244
    Abstract: In one embodiment, an apparatus can include: (i) logic configured to detect an advanced warning indication, such as for a degraded signal condition, on a first link between first and second network devices, where the detection can utilize a number of corrected bits and forward error correction (FEC), for example; and (ii) logic configured to reroute packet traffic from the first link to a second link when the degraded signal condition is detected.
    Type: Application
    Filed: March 21, 2007
    Publication date: September 25, 2008
    Applicant: Cisco Technology, Inc.
    Inventors: Ornan Gerstel, Gabriele Maria Galimberti, Loukas Paraschis, Anand Girish Parthasarathy, Humayun Sohel