Patents by Inventor Prasad P. Jogalekar
Prasad P. Jogalekar 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).
-
Patent number: 9912612Abstract: One embodiment of the present invention provides a switch. The switch includes a fabric switch module and a learning module. The fabric switch module maintains a membership in a first fabric switch. A fabric switch includes a plurality of switches and operates as a single switch. The first fabric switch is in an extended fabric switch which further comprises a second fabric switch. The learning module identifies from a notification message from the second fabric switch a media access control (MAC) address learned at the second fabric switch. The learning module stores the MAC address in a local MAC table in association with an Internet Protocol (IP) address of the second fabric switch.Type: GrantFiled: September 16, 2014Date of Patent: March 6, 2018Assignee: BROCADE COMMUNICATIONS SYSTEMS LLCInventors: Amr Sabaa, Muhammad Durrani, Mukhtiar Shaikh, Prasad P. Jogalekar, Jayanthi Jayaraman, Arunkaruppaiya Adaikalam
-
Publication number: 20150117256Abstract: One embodiment of the present invention provides a switch. The switch includes a fabric switch module and a learning module. The fabric switch module maintains a membership in a first fabric switch. A fabric switch includes a plurality of switches and operates as a single switch. The first fabric switch is in an extended fabric switch which further comprises a second fabric switch. The learning module identifies from a notification message from the second fabric switch a media access control (MAC) address learned at the second fabric switch. The learning module stores the MAC address in a local MAC table in association with an Internet Protocol (IP) address of the second fabric switch.Type: ApplicationFiled: September 16, 2014Publication date: April 30, 2015Inventors: Amr Sabaa, Muhammad Durrani, Mukhtiar Shaikh, Prasad P. Jogalekar, Jayanthi Jayaraman, Arunkaruppaiya Adaikalam
-
Patent number: 7957324Abstract: The disclosed network includes two rings, wherein a first ring transmits data in a clockwise direction, and the other ring transmits data in a counterclockwise direction. The traffic is removed from the ring by the destination node. During normal operations (i.e., all spans operational), data between nodes can flow on either ring. Thus, both rings are fully utilized during normal operations. The nodes periodically test the bit error rate of the links (or the error rate is constantly calculated) to detect a fault in one of the links. The detection of such a fault sends a broadcast signal to all nodes to reconfigure a routing table within the node so as to identify the optimum routing of source traffic to the destination node after the fault.Type: GrantFiled: November 25, 2008Date of Patent: June 7, 2011Assignee: Adtran, Inc.Inventors: Jason C. Fan, Prasad P. Jogalekar, Vinay K. Bannai
-
Patent number: 7929428Abstract: The disclosed network includes two rings, wherein a first ring transmits data in a clockwise direction, and the other ring transmits data in a counterclockwise direction. The traffic is removed from the ring by the destination node. During normal operations (i.e., all spans operational), data between nodes can flow on either ring. Thus, both rings are fully utilized during normal operations. The nodes periodically test the bit error rate of the links (or the error rate is constantly calculated) to detect a fault in one of the links. The detection of such a fault sends a broadcast signal to all nodes to reconfigure a routing table within the node so as to identify the optimum routing of source traffic to the destination node after the fault.Type: GrantFiled: November 25, 2008Date of Patent: April 19, 2011Assignee: Adtran, Inc.Inventors: Jason C. Fan, Prasad P. Jogalekar, Vinay K. Bannai
-
Patent number: 7916723Abstract: An automatic network topology identification technique is described herein. Each node in the network periodically or constantly transmits its unique address to its neighboring node. Once a node receives a different message from its neighbor, the node identifies a topology change in the network. In one embodiment, a current topology is associated with a session number. When a change in the topology is detected, the detecting node increments the session number and broadcasts the change in topology. The other nodes, detecting the changed session number, now know that there has been a change in the network. In response, the nodes in the network modify routing tables and other information stored at the node related to the topology. In one embodiment, the technique is used to reassign shortened addresses to each device on the network to support a dual-addressing mode of the network.Type: GrantFiled: July 1, 2009Date of Patent: March 29, 2011Assignee: Adtran, Inc.Inventors: Jason C. Fan, Prasad P. Jogalekar, Vinay K. Bannai
-
Publication number: 20100124176Abstract: An automatic network topology identification technique is described herein. Each node in the network periodically or constantly transmits its unique address to its neighboring node. Once a node receives a different message from its neighbor, the node identifies a topology change in the network. In one embodiment, a current topology is associated with a session number. When a change in the topology is detected, the detecting node increments the session number and broadcasts the change in topology. The other nodes, detecting the changed session number, now know that there has been a change in the network. In response, the nodes in the network modify routing tables and other information stored at the node related to the topology. In one embodiment, the technique is used to reassign shortened addresses to each device on the network to support a dual-addressing mode of the network.Type: ApplicationFiled: July 1, 2009Publication date: May 20, 2010Applicant: ADTRAN, INC.Inventors: JASON C. FAN, PRASAD P. JOGALEKAR, VINAY K. BANNAI
-
Patent number: 7570603Abstract: An automatic network topology identification technique is described herein. Each node in the network periodically or constantly transmits its unique address to its neighboring node. Once a node receives a different message from its neighbor, the node identifies a topology change in the network. In one embodiment, a current topology is associated with a session number. When a change in the topology is detected, the detecting node increments the session number and broadcasts the change in topology. The other nodes, detecting the changed session number, now know that there has been a change in the network. In response, the nodes in the network modify routing tables and other information stored at the node related to the topology. In one embodiment, the technique is used to reassign shortened addresses to each device on the network to support a dual-addressing mode of the network.Type: GrantFiled: November 19, 2008Date of Patent: August 4, 2009Assignee: ADTRAN Inc.Inventors: Jason C. Fan, Prasad P. Jogalekar, Vinay K. Bannai
-
Patent number: 7545755Abstract: An automatic network topology identification technique is described herein. Each node in the network periodically or constantly transmits its unique address to its neighboring node. Once a node receives a different message from its neighbor, the node identifies a topology change in the network. In one embodiment, a current topology is associated with a session number. When a change in the topology is detected, the detecting node increments the session number and broadcasts the change in topology. The other nodes, detecting the changed session number, now know that there has been a change in the network. In response, the nodes in the network modify routing tables and other information stored at the node related to the topology. In one embodiment, the technique is used to reassign shortened addresses to each device on the network to support a dual-addressing mode of the network.Type: GrantFiled: May 26, 2004Date of Patent: June 9, 2009Assignee: ADTRAN Inc.Inventors: Jason C. Fan, Prasad P. Jogalekar, Vinay K. Bannai
-
Publication number: 20090141621Abstract: The disclosed network includes two rings, wherein a first ring transmits data in a clockwise direction, and the other ring transmits data in a counterclockwise direction. The traffic is removed from the ring by the destination node. During normal operations (i.e., all spans operational), data between nodes can flow on either ring. Thus, both rings are fully utilized during normal operations. The nodes periodically test the bit error rate of the links (or the error rate is constantly calculated) to detect a fault in one of the links. The detection of such a fault sends a broadcast signal to all nodes to reconfigure a routing table within the node so as to identify the optimum routing of source traffic to the destination node after the fault.Type: ApplicationFiled: November 25, 2008Publication date: June 4, 2009Applicant: Adtran, Inc.Inventors: Jason C. Fan, Prasad P. Jogalekar, Vinay K. Bannai
-
Publication number: 20090141656Abstract: The disclosed network includes two rings, wherein a first ring transmits data in a clockwise direction, and the other ring transmits data in a counterclockwise direction. The traffic is removed from the ring by the destination node. During normal operations (i.e., all spans operational), data between nodes can flow on either ring. Thus, both rings are fully utilized during normal operations. The nodes periodically test the bit error rate of the links (or the error rate is constantly calculated) to detect a fault in one of the links. The detection of such a fault sends a broadcast signal to all nodes to reconfigure a routing table within the node so as to identify the optimum routing of source traffic to the destination node after the fault.Type: ApplicationFiled: November 25, 2008Publication date: June 4, 2009Applicant: Adtran, Inc.Inventors: Jason C. Fan, Prasad P. Jogalekar, Vinay K. Bannai
-
Publication number: 20090092064Abstract: An automatic network topology identification technique is described herein. Each node in the network periodically or constantly transmits its unique address to its neighboring node. Once a node receives a different message from its neighbor, the node identifies a topology change in the network. In one embodiment, a current topology is associated with a session number. When a change in the topology is detected, the detecting node increments the session number and broadcasts the change in topology. The other nodes, detecting the changed session number, now know that there has been a change in the network. In response, the nodes in the network modify routing tables and other information stored at the node related to the topology. In one embodiment, the technique is used to reassign shortened addresses to each device on the network to support a dual-addressing mode of the network.Type: ApplicationFiled: November 19, 2008Publication date: April 9, 2009Inventors: Jason C. Fan, Prasad P. Jogalekar, Vinay K. Bannai
-
Patent number: 7002977Abstract: A system and method are disclosed for policy based accounting and billing for network services. In one embodiment, a packet forwarding device receives a packet to be forwarded over the network, accesses a policy table to identify a billing party associated with the packet, obtains billing information, and stores a record of the forwarded packet and the associated billing party.Type: GrantFiled: June 29, 2001Date of Patent: February 21, 2006Assignee: Luminous Networks, Inc.Inventor: Prasad P. Jogalekar
-
Patent number: 6865149Abstract: The disclosed network includes two rings, wherein a first ring transmits data in a clockwise direction, and the other ring transmits data in a counterclockwise direction. The traffic is removed from the ring by the destination node. During normal operations (i.e., all spans operational), data between nodes flows on the ring that would provide the minimum number of hops to the destination node. Thus, both rings are fully utilized during normal operations. The nodes periodically test the bit error rate of the links (or the error rate is constantly calculated) to detect a fault in one of the links. The detection of such a fault sends a broadcast signal to all nodes to reconfigure a routing table within the node so as to identify the optimum routing of source traffic to the destination node after the fault.Type: GrantFiled: March 3, 2000Date of Patent: March 8, 2005Assignee: Luminous Networks, Inc.Inventors: Robert F. Kalman, Jason C. Fan, Charles F. Barry, Prasad P. Jogalekar, Vinay K. Bannai
-
Publication number: 20040213274Abstract: An automatic network topology identification technique is described herein. Each node in the network periodically or constantly transmits its unique address to its neighboring node. Once a node receives a different message from its neighbor, the node identifies a topology change in the network. In one embodiment, a current topology is associated with a session number. When a change in the topology is detected, the detecting node increments the session number and broadcasts the change in topology. The other nodes, detecting the changed session number, now know that there has been a change in the network. In response, the nodes in the network modify routing tables and other information stored at the node related to the topology. In one embodiment, the technique is used to reassign shortened addresses to each device on the network to support a dual-addressing mode of the network.Type: ApplicationFiled: May 26, 2004Publication date: October 28, 2004Inventors: Jason C. Fan, Prasad P. Jogalekar, Vinay K. Bannai
-
Patent number: 6717956Abstract: A dual addressing mode is described in which reduced-length addresses (referred to as short addresses) are substituted for standard addresses (referred to as long addresses) for traffic whose source or destination is internal to a given virtual network topology. The required length of short addresses used for a given virtual topology is dependent on the number of devices reachable within the topology. For a virtual topology with less than 256 addressable devices, for example, 8-bit short addresses can be used. When a node within the virtual network sees a packet with a short destination address in the header, the node understands the address to be within the virtual network and routes the packet accordingly. If a source address is a short address, the virtual network can identify the source within the virtual network. For packets originating in the virtual network whose destination is also in the virtual network, both the source and destination addresses can be short addresses.Type: GrantFiled: March 3, 2000Date of Patent: April 6, 2004Assignee: Luminous Networks, Inc.Inventors: Jason C. Fan, Prasad P. Jogalekar, Vinay K. Bannai
-
Patent number: 6680912Abstract: The disclosed network includes two rings, wherein a first ring transmits data in a clockwise direction, and the other ring transmits data in a counterclockwise direction. The traffic is removed from the ring by the destination node. During normal operations (i.e., all spans operational), data between nodes flows on the ring that would provide the minimum number of hops to the destination node. Thus, both rings are fully utilized during normal operations. The nodes periodically test the bit error rate of the links (or the error rate is constantly calculated) to detect a fault in one of the links. The detection of such a fault sends a broadcast signal to all nodes to reconfigure a routing table within the node so as to identify the optimum routing of source traffic to the destination node after the fault.Type: GrantFiled: March 3, 2000Date of Patent: January 20, 2004Assignee: Luminous Networks, Inc.Inventors: Robert F. Kalman, Jason C. Fan, Charles F. Barry, Prasad P. Jogalekar, Vinay K. Bannai
-
Patent number: 6643269Abstract: An automatic network topology identification technique is described herein. Each node in the network periodically or constantly transmits its unique address to its neighboring node. Once a node receives a different message from its neighbor, the node identifies a topology change in the network. In one embodiment, a current topology is associated with a session number. When a change in the topology is detected, the detecting node increments the session number and broadcasts the change in topology. The other nodes, detecting the changed session number, now know that there has been a change in the network. In response, the nodes in the network modify routing tables and other information stored at the node related to the topology. In one embodiment, the technique is used to reassign shortened addresses to each device on the network to support a dual-addressing mode of the network.Type: GrantFiled: March 3, 2000Date of Patent: November 4, 2003Assignee: Luminous Networks, Inc.Inventors: Jason C. Fan, Prasad P. Jogalekar, Vinay K. Bannai
-
Patent number: 6625124Abstract: An automatic network topology identification technique is described herein. Each node in the network periodically or constantly transmits its unique address to its neighboring node. Once a node receives a different message from its neighbor, the node identifies a topology change in the network. In one embodiment, a current topology is associated with a session number. When a change in the topology is detected, the detecting node increments the session number and broadcasts the change in topology. The other nodes, detecting the changed session number, now know that there has been a change in the network. In response, the nodes in the network modify routing tables and other information stored at the node related to the topology. In one embodiment, the technique is used to reassign shortened addresses to each device on the network to support a dual-addressing mode of the network.Type: GrantFiled: March 3, 2000Date of Patent: September 23, 2003Assignee: Luminous Networks, Inc.Inventors: Jason C. Fan, Prasad P. Jogalekar, Vinay K. Bannai