Patents by Inventor Ramanan Raghuraman

Ramanan Raghuraman 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).

  • Packet transport for network device clusters
    Patent number: 8718053
    Abstract: In one implementation, a cluster of network devices forwards packets within the cluster according to a node vector and a cluster database. The cluster database defines a path from each network device in the cluster to every other network device in the cluster. When a packet is received, the receiving network device accesses a forwarding database for egress ports according to a destination address of the packet and accesses the cluster database to identify a first cluster link in the path from the receiving network device to the egress network device. The receiving network device adds a node vector to the packet. The node vector communicates to subsequent network devices how the packet is to be forwarded through the cluster on the path from the receiving network device to the egress network device. The node vector is specific to the network device cluster and operates independent from packet forwarding protocols.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: May 6, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Ramanan Raghuraman, Rajan Sharma
  • PACKET TRANSPORT FOR NETWORK DEVICE CLUSTERS
    Publication number: 20120120949
    Abstract: In one implementation, a cluster of network devices forwards packets within the cluster according to a node vector and a cluster database. The cluster database defines a path from each network device in the cluster to every other network device in the cluster. When a packet is received, the receiving network device accesses a forwarding database for egress ports according to a destination address of the packet and accesses the cluster database to identify a first cluster link in the path from the receiving network device to the egress network device. The receiving network device adds a node vector to the packet. The node vector communicates to subsequent network devices how the packet is to be forwarded through the cluster on the path from the receiving network device to the egress network device. The node vector is specific to the network device cluster and operates independent from packet forwarding protocols.
    Type: Application
    Filed: November 12, 2010
    Publication date: May 17, 2012
    Applicant: Cisco Technology, Inc.
    Inventors: Ramanan Raghuraman, Rajan Sharma