Patents by Inventor Rishi Mehta

Rishi Mehta 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).

  • Publication number: 20090109837
    Abstract: A method and apparatus that proxies connectivity check messages and sends fault state changes messages across an MPLS/VPLS network is described. A network element proxies connectivity check messages for remote maintenance endpoints based on a local database. The network element updates the database based on received fault state change message that identify a fault state change of a remote maintenance endpoint. The network element detects fault state changes of local maintenance endpoints and sends a fault state change message to other network elements that proxy connectivity check message for the local maintenance endpoints.
    Type: Application
    Filed: March 17, 2008
    Publication date: April 30, 2009
    Inventors: Sriganesh Kini, Rishi Mehta
  • Publication number: 20090113070
    Abstract: Techniques for providing connectivity fault management (CFM) for a multi-tiered network are described herein. In one embodiment, a link trace message (LTM) is received at a provider edge (PE) router and originated from a first Ethernet node and destined to a second Ethernet node, where the PE router interfaces an Ethernet and a multi-protocol label switching (MPLS) network. In response, the PE router initiates an MPLS trace session, including generating an MPLS trace message based on the LTM message to one or more MPLS nodes along a path between the first and second Ethernet nodes within the MPLS network. Subsequently, in response to one or more MPLS trace reply messages from the MPLS nodes of the MPLS network, the PE router generates a first link trace reply (LTR) message and sends the first LTR message to the first Ethernet node over the Ethernet. Other methods and apparatuses are also described.
    Type: Application
    Filed: December 13, 2007
    Publication date: April 30, 2009
    Inventors: Rishi Mehta, Sriganesh Kini, Peter Arberg
  • Publication number: 20070253438
    Abstract: Differentiated services for network traffic using weighted quality of service is provided. Network traffic is queued into separate per flow queues, and traffic is scheduled from the per flow queues into a group queue. Congestion management is performed on traffic in the group queue. Traffic is marked with priority values, and congestion management is performed based on the priority values. For example, traffic can be marked as “in contract” if it is within a contractual limit, and marked as “out of contract” if it is not within the contractual limit. Marking can also include classifying incoming traffic based on Differentiated Service Code Point. Higher priority traffic can be scheduled from the per flow queues in a strict priority over lower priority traffic. The lower priority traffic can be scheduled in a round robin manner.
    Type: Application
    Filed: April 28, 2006
    Publication date: November 1, 2007
    Applicant: Tellabs San Jose, Inc.
    Inventors: David Curry, Robert Colvin, Samer Nubani, Ravindra Sunkad, Man-Tung Hsiao, Paul Hallinan, Rishi Mehta, Sanjay Khanna
  • Publication number: 20070206602
    Abstract: Differentiated service classes on a label switch path are managed by comparing at least one packet field value included in a packet of data to mapping field values of a mapping that correlates the mapping field values with queues. The packet is stored into one of the queues based on the comparing. A first subset of the queues is scheduled using a first queue scheduling algorithm and a second subset of the queues is scheduled using a second queue scheduling algorithm. The packet is transmitted onto the label switch path in accordance with a predefined scheduling order of the first subset of the queues and the second subset of the queues.
    Type: Application
    Filed: August 8, 2006
    Publication date: September 6, 2007
    Applicant: Tellabs San Jose, Inc.
    Inventors: MITRI HALABI, Sanjay Khanna, Robert Colvin, Rishi Mehta