Patents by Inventor Shekhar Ambe
Shekhar Ambe 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).
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Patent number: 9036643Abstract: A method for establishing a virtual channel between network devices is disclosed. In the case of a local network device establishing a virtual channel with a remote network device, a virtual channel request message is sent from the local network device to the remote network device. A virtual channel acknowledgement message and a remote capability list are received and a virtual channel resume message and a local capability list are sent. The virtual channel is then enabled. In the case of a remote network device establishing a virtual channel with a local network device, a virtual channel request message is received from a local network device by a remote network device. A virtual channel acknowledgement message and a remote capability list are sent and a virtual channel resume message and a local capability list are received. The virtual channel is then enabled.Type: GrantFiled: July 16, 2013Date of Patent: May 19, 2015Assignee: Broadcom CorporationInventors: Shiri Kadambi, Shekhar Ambe, Mohan Kalkunte, Sandeep Relan, Allan Christie, Uri Elzur, Martin Lund, Daniel Talayco
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Patent number: 8638664Abstract: A network device includes a port, a buffer, a flow control module, and a service differentiation module. The port is configured to send and receive a packet, wherein the port is connected to a network entity. The buffer is configured to store the packet. The flow control module is configured to control the transmission of the packet within the network device. The service differentiation module is coupled with the buffer and the flow control module. The service differentiation module is configured to regulate storage of the packet in the buffer and to regulate the transmission of the packet from the network device to the network entity. The service differentiation module is also configured to determine excess bandwidth available within the network device and to allocate the excess bandwidth to transmit the packet to the network entity.Type: GrantFiled: August 9, 2010Date of Patent: January 28, 2014Assignee: Broadcom CorporationInventors: Laxman Shankar, Shekhar Ambe
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Publication number: 20130301410Abstract: A method for establishing a virtual channel between network devices is disclosed. In the case of a local network device establishing a virtual channel with a remote network device, a virtual channel request message is sent from the local network device to the remote network device. A virtual channel acknowledgement message and a remote capability list are received and a virtual channel resume message and a local capability list are sent. The virtual channel is then enabled. In the case of a remote network device establishing a virtual channel with a local network device, a virtual channel request message is received from a local network device by a remote network device. A virtual channel acknowledgement message and a remote capability list are sent and a virtual channel resume message and a local capability list are received. The virtual channel is then enabled.Type: ApplicationFiled: July 16, 2013Publication date: November 14, 2013Inventors: Shiri Kadambi, Shekhar Ambe, Mohan Kalkunte, Sandeep Relan, Allan Christie, Uri Elzur, Martin Lund, Daniel Talayco
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Patent number: 8565240Abstract: A method for selectively controlling the flow of data through a network device is discussed. The network device has a plurality of ports, with each port of the plurality of ports having a plurality of priority queues. Congestion at one priority queue of the plurality of priority queues is detected and a virtual channel message is sent to other network devices connected to the network device causing data destined for the one priority queue to be halted. After the congestion at the one priority queue has abated, a virtual channel resume message is sent to the other network devices.Type: GrantFiled: September 20, 2011Date of Patent: October 22, 2013Assignee: Broadcom CorporationInventors: Shiri Kadambi, Shekhar Ambe, Mohan Kalkunte, Sandeep Relan
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Patent number: 8493857Abstract: A method for establishing a virtual channel between network devices is disclosed. In the case of a local network device establishing a virtual channel with a remote network device, a virtual channel request message is sent from the local network device to the remote network device. A virtual channel acknowledgement message and a remote capability list are received and a virtual channel resume message and a local capability list are sent. The virtual channel is then enabled. In the case of a remote network device establishing a virtual channel with a local network device, a virtual channel request message is received from a local network device by a remote network device. A virtual channel acknowledgement message and a remote capability list are sent and a virtual channel resume message and a local capability list are received. The virtual channel is then enabled.Type: GrantFiled: January 14, 2011Date of Patent: July 23, 2013Assignee: Broadcom CorporationInventors: Shiri Kadambi, Shekhar Ambe, Mohan Kalkunte, Sandeep Relan, Allan Christie, Uri Elzur, Martin Lund, Daniel Talayco
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Patent number: 8149828Abstract: Methods and apparatus for network communications are disclosed. In an example embodiment, a network switch assembly for network communications comprises a fabric blade. In the example embodiment, the at least one switch comprises a plurality of data port interfaces, where the plurality of data port interfaces are configured to transmit and receive data over a plurality of fabric data ports. The at least one switch of the fabric blade also includes a central processing unit (CPU) interface configured to communicate with an external CPU subsystem. The example network switch assembly also includes a plurality of port blades. Each port blade of the plurality of port blades includes a local CPU and at least one switch. In the example network switch assembly, the at least one switch of each port blade includes a plurality of data port interfaces, where the plurality of data port interfaces being configured to transmit and receive data over a plurality of port data ports.Type: GrantFiled: November 13, 2008Date of Patent: April 3, 2012Assignee: Broadcom CorporationInventors: Mohan Kalkunte, Shekhar Ambe
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Patent number: 8116203Abstract: A method for establishing a virtual channel between network devices is disclosed. In the case of a local network device establishing a virtual channel with a remote network device, a virtual channel request message is sent from the local network device to the remote network device. A virtual channel acknowledgement message and a remote capability list are received and a virtual channel resume message and a local capability list are sent. The virtual channel is then enabled. In the case of a remote network device establishing a virtual channel with a local network device, a virtual channel request message is received from a local network device by a remote network device. A virtual channel acknowledgement message and a remote capability list are sent and a virtual channel resume message and a local capability list are received. The virtual channel is then enabled.Type: GrantFiled: May 31, 2007Date of Patent: February 14, 2012Assignee: Broadcom CorporationInventors: Shiri Kadambi, Shekhar Ambe, Mohan Kalkunte, Sandeep Relan, Allan Christie, Uri Elzur, Martin Lund, Daniel Talayco
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Publication number: 20120008502Abstract: A method for selectively controlling the flow of data through a network device is discussed. The network device has a plurality of ports, with each port of the plurality of ports having a plurality of priority queues. Congestion at one priority queue of the plurality of priority queues is detected and a virtual channel message is sent to other network devices connected to the network device causing data destined for the one priority queue to be halted. After the congestion at the one priority queue has abated, a virtual channel resume message is sent to the other network devices.Type: ApplicationFiled: September 20, 2011Publication date: January 12, 2012Inventors: Shiri Kadambi, Shekhar Ambe, Mohan Kalkunte, Sandeep Relan
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Patent number: 8027341Abstract: A network switch that has a plurality of input ports that receive data packets. An external interface is connected to the plurality of input ports. The external interface externally transmits the data packets for processing, and receives the data packets after processing. A memory management unit is connected to the external interface and a plurality of output ports are connected to the memory management unit.Type: GrantFiled: July 21, 2006Date of Patent: September 27, 2011Assignee: Broadcom CorporationInventors: Mohan Kalkunte, Shekhar Ambe, Soma Pullela
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Patent number: 8023413Abstract: A method for selectively controlling the flow of data through a network device is discussed. The network device has a plurality of ports, with each port of the plurality of ports having a plurality of priority queues. Congestion at one priority queue of the plurality of priority queues is detected and a virtual channel message is sent to other network devices connected to the network device causing data destined for the one priority queue to be halted. After the congestion at the one priority queue has abated, a virtual channel resume message is sent to the other network devices.Type: GrantFiled: March 23, 2010Date of Patent: September 20, 2011Assignee: Broadcom CorporationInventors: Shiri Kadambi, Shekhar Ambe, Mohan Kalkunte, Sandeep Relan
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Patent number: 7953001Abstract: A network device for monitoring a memory partitioned by an identifier can include at least one port configured to receive at least one packet. The at least one packet includes an identifier relating to priority of the at least one packet. The network device can also include a buffer memory having at least one buffer configured to store the at least one packet, and a counter configured to modify a counter value therein when the buffer memory is accessed with respect to the at least one data packet, wherein the counter corresponds to the identifier with respect to the at least one packet.Type: GrantFiled: September 11, 2006Date of Patent: May 31, 2011Assignee: Broadcom CorporationInventors: Laxman Shankar, Shekhar Ambe
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Publication number: 20110110236Abstract: A method for establishing a virtual channel between network devices is disclosed. In the case of a local network device establishing a virtual channel with a remote network device, a virtual channel request message is sent from the local network device to the remote network device. A virtual channel acknowledgement message and a remote capability list are received and a virtual channel resume message and a local capability list are sent. The virtual channel is then enabled. In the case of a remote network device establishing a virtual channel with a local network device, a virtual channel request message is received from a local network device by a remote network device. A virtual channel acknowledgement message and a remote capability list are sent and a virtual channel resume message and a local capability list are received. The virtual channel is then enabled.Type: ApplicationFiled: January 14, 2011Publication date: May 12, 2011Inventors: Shiri Kadambi, Shekhar Ambe, Mohan Kalkunte, Sandeep Relan, Allan Christie, Uri Elzur, Martin Lund, Daniel Talayco
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Patent number: 7876680Abstract: A method for load balancing in a link aggregation environment, wherein the method includes the steps of determining if a packet flow in a network switch exceeds a predetermined threshold. Then the method includes the step of determining if the packet flow is a candidate for link switching from a first link to a second link if the packet flow exceeds the predetermined threshold. Additionally, the method includes switching the packet flow from the first link to the second link if the packet flow is determined to be a candidate for link switching. Additionally, a method for load balancing in a link aggregation environment including the steps of determining a length of a first frame and a length of a second frame entering the link aggregation environment. Thereafter, determining a flow rate of the first frame and the second frame entering the link aggregation environment.Type: GrantFiled: June 14, 2005Date of Patent: January 25, 2011Assignee: Broadcom CorporationInventors: Shiri Kadambi, Mohan Kalkunte, Shekhar Ambe
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Patent number: 7856015Abstract: A switch is configured to block packets from being transmitted through designated ports. The switch has port bitmap generator configured to obtain a port bitmap and a table is configured to store a block mask indicating which port the packet should not be transmitted. A block mask lookup is configured to determine the block mask for the packet from the table, and a transmit port bitmap generator is configured to determine which ports the packet should be transmitted using the port bitmap and the block mask.Type: GrantFiled: April 27, 2007Date of Patent: December 21, 2010Assignee: Broadcom CorporationInventors: Mohan Kalkunte, Shekhar Ambe, Sam Sampath
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Publication number: 20100302942Abstract: A network device includes a port, a buffer, a flow control module, and a service differentiation module. The port is configured to send and receive a packet, wherein the port is connected to a network entity. The buffer is configured to store the packet. The flow control module is configured to control the transmission of the packet within the network device. The service differentiation module is coupled with the buffer and the flow control module. The service differentiation module is configured to regulate storage of the packet in the buffer and to regulate the transmission of the packet from the network device to the network entity. The service differentiation module is also configured to determine excess bandwidth available within the network device and to allocate the excess bandwidth to transmit the packet to the network entity.Type: ApplicationFiled: August 9, 2010Publication date: December 2, 2010Applicant: BROADCOM CORPORATIONInventors: Laxman Shankar, Shekhar Ambe
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Patent number: 7796612Abstract: A network switch and a method thereof for network communications include a first data port interface and a second data port interface supporting a data port transmitting and receiving data at a first data rate and a second data rate, respectively. The switch has a CPU interface to communicate with a CPU and a memory management unit to communicate data from at least one of the first and second data port interfaces and a memory. The switch includes a communication channel communicating data and messaging information between the first and second data port interfaces and the memory management unit and lookup tables, including an address resolution lookup table and a VLAN table. The first or second data port interfaces determine an egress port for an incoming data packet from a search of the address resolution lookup table and the VLAN table using a VLAN ID from the incoming data packet.Type: GrantFiled: December 21, 2005Date of Patent: September 14, 2010Assignee: Broadcom CorporationInventors: Srinivas Sampath, Mohan Kalkunte, Shekhar Ambe, Shiri Kadambi
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Patent number: 7782891Abstract: A network switch for network communications includes a first data port interface, wherein the first data port interface supports a plurality of data ports for transmitting and receiving data at a first data rate. The network switch also includes a second data port interface, wherein the second data port interface supports a plurality of data ports for transmitting and receiving data at a second data rate, along with a third data port interface for transmitting and receiving data at a third data rate. A CPU interface is provided and configured to communicate with a CPU. The switch includes a first, second and third internal memory communicating with the first, second and third data port interface. A first and second memory management unit for communicating data and to control access to and from the second internal memory, are also provided. A communication channel is provided for communicating data and messaging information.Type: GrantFiled: October 29, 2007Date of Patent: August 24, 2010Assignee: Broadcom CorporationInventors: Shiri Kadambi, Shekhar Ambe
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Patent number: 7782776Abstract: A network device includes a port, a buffer, a flow control module, and a service differentiation module. The port is configured to send and receive a packet, wherein the port is connected to a network entity. The buffer is configured to store the packet. The flow control module is configured to control the transmission of the packet within the network device. The service differentiation module is coupled with the buffer and the flow control module. The service differentiation module is configured to regulate storage of the packet in the buffer and to regulate the transmission of the packet from the network device to the network entity. The service differentiation module is also configured to determine excess bandwidth available within the network device and to allocate the excess bandwidth to transmit the packet to the network entity.Type: GrantFiled: January 27, 2003Date of Patent: August 24, 2010Assignee: Broadcom CorporationInventors: Laxman Shankar, Shekhar Ambe
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Patent number: 7778254Abstract: A method for managing congestion in a stack of network switches includes the steps of receiving an incoming packet on a first port of a network switch for transmission to a destination port and determining if the destination port of the packet is a monitored port. Thereafter, the method determines a queue status of the destination port, if the destination port is determined to be a monitored port, and preschedules transmission of the incoming packet to the destination port if the destination port is determined to be a monitored port.Type: GrantFiled: January 29, 2007Date of Patent: August 17, 2010Assignee: Broadcom CorporationInventors: Shiri Kadambi, Mohan Kalkunte, Shekhar Ambe
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Publication number: 20100177637Abstract: A method for selectively controlling the flow of data through a network device is discussed. The network device has a plurality of ports, with each port of the plurality of ports having a plurality of priority queues. Congestion at one priority queue of the plurality of priority queues is detected and a virtual channel message is sent to other network devices connected to the network device causing data destined for the one priority queue to be halted. After the congestion at the one priority queue has abated, a virtual channel resume message is sent to the other network devices.Type: ApplicationFiled: March 23, 2010Publication date: July 15, 2010Applicant: BROADCOM CORPORATIONInventors: Shiri Kadambi, Shekhar Ambe, Mohan Kalkunte, Sandeep Relan