Patents by Inventor Mark Gustlin
Mark Gustlin 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: 7839864Abstract: According to various embodiments, high priority traffic is obtained from one of a plurality of virtual channels servicing high priority traffic. High priority traffic is placed in a high priority queue. Low priority traffic is obtained from one of a plurality of virtual channels. A weighting value associated with an element in the active queue is determined. The element corresponds to a virtual channel associated with the low priority traffic. The low priority traffic is placed either in a low priority traffic active queue or a low priority traffic pending queue based on the weighting value.Type: GrantFiled: May 21, 2007Date of Patent: November 23, 2010Assignee: Cisco Technology, Inc.Inventors: Varun Satrawla, Mark Gustlin, Robert Olsen
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Patent number: 7606158Abstract: Presently disclosed is an apparatus and method for returning control of bandwidth allocation and packet scheduling to the routing engine in a network communications device containing an ATM interface. Virtual circuit (VC) flow control is augmented by the addition of a second flow control feedback signal from each virtual path (VP). VP flow control is used to suspend scheduling of all VCs on a given VP when traffic has accumulated on enough VCs to keep the VP busy. A new packet segmenter is employed to segment traffic while preserving the first in, first out (FIFO) order in which packet traffic was received. Embodiments of the invention may be implemented using a two-level (per-VC and per-VP) scheduling hierarchy or may use as many levels of flow control feedback-derived scheduling as may be necessitated by multilevel scheduling hierarchies.Type: GrantFiled: September 24, 2004Date of Patent: October 20, 2009Assignee: Cisco Technology, Inc.Inventors: Guy C. Fedorkow, Kenneth H. Potter, Jr., Mark A. Gustlin, Christopher J. Kappler, Robert T. Olsen
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Patent number: 7433988Abstract: A port adapter for connecting zero or more network interfaces to a host system having a SPI-4 bus is disclosed. The port adapter comprises zero or more network interfaces; a SPI-4 bus coupled to a host system to provide a communication channel between the host and the network interfaces; a control bus coupled to the host system for controlling and monitoring the port adapter; and interface logic that interfaces the SPI-4 bus and the control bus to the network interfaces. Methods are provided for selecting and using one of a small plurality of different packet formats for various networking technologies, so that the port adapter can hide details of the technology that it handles from the host system, and for operating the host system's SPI-4 bus at one of several speeds based on bandwidth requirements of the port adapter.Type: GrantFiled: June 12, 2007Date of Patent: October 7, 2008Assignee: Cisco Technology, Inc.Inventors: David Doak, Garry P. Epps, Guy Fedorkow, Mark A. Gustlin, Steven P. Holmes, Randall A. Johnson, Promode Nedungadi, Mohammed I. Tatar
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Publication number: 20080138075Abstract: An apparatus is provided that includes n communication channels, and m communication media interfaces, and v virtual lanes. V is a positive integer multiple of the least common multiple of m and n. An information stream is transferred into data and alignment blocks striped across all of the v virtual lanes, the blocks being communicated from the virtual lanes onto the communication channels. The blocks are received on the communication channels. Each of the communication channels transmits a different portion of the blocks striped across all of the v virtual lanes. In more particular embodiments, v>=n>=m. The communication media interfaces can be electrical and optical. Each of the communication channels can include a SerDes interface operating at least 5 Gigabits per second. Furthermore, each of the m communication media interfaces is configured to transmit a different stream of information over a single optical fiber.Type: ApplicationFiled: December 11, 2007Publication date: June 12, 2008Applicant: Cisco Technology, Inc.Inventors: Mark A. Gustlin, Oded Trainin, Luca Della Chiesa
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Patent number: 7310695Abstract: A port adapter for connecting zero or more network interfaces to a host system having a SPI-4 bus is disclosed. The port adapter comprises zero or more network interfaces; a SPI-4 bus coupled to a host system to provide a communication channel between the host and the network interfaces; a control bus coupled to the host system for controlling and monitoring the port adapter; and interface logic that interfaces the SPI-4 bus and the control bus to the network interfaces. Methods are provided for selecting and using one of a small plurality of different packet formats for various networking technologies, so that the port adapter can hide details of the technology that it handles from the host system, and for operating the host system's SPI-4 bus at one of several speeds based on bandwidth requirements of the port adapter.Type: GrantFiled: August 11, 2006Date of Patent: December 18, 2007Assignee: Cisco Technology, Inc.Inventors: Garry P. Epps, Mark A. Gustlin, Mohammed I. Tatar
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Publication number: 20070283073Abstract: A port adapter for connecting zero or more network interfaces to a host system having a SPI-4 bus is disclosed. The port adapter comprises zero or more network interfaces; a SPI-4 bus coupled to a host system to provide a communication channel between the host and the network interfaces; a control bus coupled to the host system for controlling and monitoring the port adapter; and interface logic that interfaces the SPI-4 bus and the control bus to the network interfaces. Methods are provided for selecting and using one of a small plurality of different packet formats for various networking technologies, so that the port adapter can hide details of the technology that it handles from the host system, and for operating the host system's SPI-4 bus at one of several speeds based on bandwidth requirements of the port adapter.Type: ApplicationFiled: June 12, 2007Publication date: December 6, 2007Inventors: David Doak, Garry Epps, Guy Fedorkow, Mark Gustlin, Steven Holmes, Randall Johnson, Promode Nedungadi, Mohammed Tatar
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Publication number: 20060277346Abstract: A port adapter for connecting zero or more network interfaces to a host system having a SPI-4 bus is disclosed. The port adapter comprises zero or more network interfaces; a SPI-4 bus coupled to a host system to provide a communication channel between the host and the network interfaces; a control bus coupled to the host system for controlling and monitoring the port adapter; and interface logic that interfaces the SPI-4 bus and the control bus to the network interfaces. Methods are provided for selecting and using one of a small plurality of different packet formats for various networking technologies, so that the port adapter can hide details of the technology that it handles from the host system, and for operating the host system's SPI-4 bus at one of several speeds based on bandwidth requirements of the port adapter.Type: ApplicationFiled: August 11, 2006Publication date: December 7, 2006Inventors: David Doak, Garry Epps, Guy Fedorkow, Mark Gustlin, Steven Holmes, Randall Johnson, Promode Nedungadi, John Prokopik, Mohammed Tatar, Michael Taylor
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Patent number: 7111102Abstract: A port adapter for connecting zero or more network interfaces to a host system having a SPI-4 bus is disclosed. The port adapter comprises zero or more network interfaces; a SPI-4 bus coupled to a host system to provide a communication channel between the host and the network interfaces; a control bus coupled to the host system for controlling and monitoring the port adapter; and interface logic that interfaces the SPI-4 bus and the control bus to the network interfaces. Methods are provided for selecting and using one of a small plurality of different packet formats for various networking technologies, so that the port adapter can hide details of the technology that it handles from the host system, and for operating the host system's SPI-4 bus at one of several speeds based on bandwidth requirements of the port adapter.Type: GrantFiled: October 6, 2003Date of Patent: September 19, 2006Assignee: Cisco Technology, Inc.Inventors: David Doak, Garry P. Epps, Guy Fedorkow, Mark A. Gustlin, Steven P. Holmes, Randall A. Johnson, Promode Nedungadi, John P. Prokopik, Mohammed I. Tatar, Michael J. Taylor
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Publication number: 20060067225Abstract: Presently disclosed is an apparatus and method for returning control of bandwidth allocation and packet scheduling to the routing engine in a network communications device containing an ATM interface. Virtual circuit (VC) flow control is augmented by the addition of a second flow control feedback signal from each virtual path (VP). VP flow control is used to suspend scheduling of all VCs on a given VP when traffic has accumulated on enough VCs to keep the VP busy. A new packet segmenter is employed to segment traffic while preserving the first in, first out (FIFO) order in which packet traffic was received. Embodiments of the invention may be implemented using a two-level (per-VC and per-VP) scheduling hierarchy or may use as many levels of flow control feedback-derived scheduling as may be necessitated by multilevel scheduling hierarchies.Type: ApplicationFiled: September 24, 2004Publication date: March 30, 2006Inventors: Guy Fedorkow, Kenneth Potter, Mark Gustlin, Christopher Kappler, Robert Olsen
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Publication number: 20050149651Abstract: A port adapter for connecting zero or more network interfaces to a host system having a SPI-4 bus is disclosed. The port adapter comprises zero or more network interfaces; a SPI-4 bus coupled to a host system to provide a communication channel between the host and the network interfaces; a control bus coupled to the host system for controlling and monitoring the port adapter; and interface logic that interfaces the SPI-4 bus and the control bus to the network interfaces. Methods are provided for selecting and using one of a small plurality of different packet formats for various networking technologies, so that the port adapter can hide details of the technology that it handles from the host system, and for operating the host system's SPI-4 bus at one of several speeds based on bandwidth requirements of the port adapter.Type: ApplicationFiled: October 6, 2003Publication date: July 7, 2005Inventors: David Doak, Garry Epps, Guy Fedorkow, Mark Gustlin, Steven Holmes, Randall Johnson, Promode Nedungadi, John Prokopik, Mohammed Tatar, Michael Taylor