Erik M Johnson

US Patent:

6385550, May 7, 2002

Filed:

Jun 14, 1999

Appl. No.:

09/333116

Inventors:

Philip K. Jansen - Portland OR
Erik J. Johnson - Beaverton OR

Assignee:

Tektronix, Inc. - Beaverton OR

International Classification:

G06F 1900

US Classification:

702 91, 324 725, 324115, 702 66, 702117, 702119

Abstract:

A probe or accessory incorporating the features of the subject invention includes a communications arrangement for communicating topology-related data to a host instrument connected to the probe or accessory. The topology-related data describes the probe or accessory as a network comprising multiple paths from the probe tip to host instrument input connector. Each path is associated with a feature of the probe or accessory, and only one path may be active at any given time. Each feature is described by a unique number, called a âtagâ. New tags may be assigned when necessary so long as existing tags are not disturbed. A probe or accessory in accordance with the subject invention transmits a list of âRequired Tagsâ to the host instrument. Each required tag is associated with a pathway within the probe or accessory. The host instrument may only exercise those paths for which all required tags are understood, or those for which no required tag is designated.

US Patent:

6789131, Sep 7, 2004

Filed:

Jun 14, 2000

Appl. No.:

09/594352

Inventors:

Erik J. Johnson - Beaverton OR
Aaron R. Kunze - Portland OR

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G06F 1516

US Classification:

709250, 709238

Abstract:

A method for employing a driver in a router to communicate between the routers operating system and network processor. The driver appears to the operating system as a device driver for a conventional network interface. The driver also registers with the network processor and appears itself as a forwarding interface. Control information received the network processor is forwarded to the operating system by way of the driver using the network processors existing forwarding mechanisms, and control information from the operating system is sent to the network processor by way of the driver.

US Patent:

6868086, Mar 15, 2005

Filed:

Mar 29, 2000

Appl. No.:

09/538331

Inventors:

David M. Putzolu - Forest Grove OR, US
Erik J. Johnson - Beaverton OR, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

H04L012/28

US Classification:

370401, 37039553, 370402

Abstract:

A distributed device has external ports and a configurable internal communications network interconnecting the external ports. The network is configured to transmit a data packet received from one of the ports to a second of the ports according to a communications protocol of the internal network. The second of the ports connects to a destination of the data packet.

US Patent:

6975628, Dec 13, 2005

Filed:

Dec 22, 2000

Appl. No.:

09/747384

Inventors:

Erik J. Johnson - Beaverton OR, US
Kapil Jain - Hillsboro OR, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

H04L012/28
G06F015/16
G06F003/00

US Classification:

370389, 370401, 709230, 719331

Abstract:

The present invention defines an object-oriented programming model appropriate for both ASIC-based networking silicon as well as network processors. This model obtains this range of expressiveness by identifying the fundamental units of packet processing performed by underlying hardware (either ASIC or network processor). Software objects, called Stages, are then created to encapsulate and represent these fundamental units of packet processing. Using this API, a directed graph of packet flow is formed using the Stage objects. This directed graph of packet flow models packet processing performed by underlying forwarding hardware. As a result, additional services can be added or deleted from a single switching/routing device without affecting the underlying forwarding engine hardware.

US Patent:

7000098, Feb 14, 2006

Filed:

Oct 24, 2002

Appl. No.:

10/279590

Inventors:

Aaron R. Kunze - Portland OR, US
Erik J. Johnson - Portland OR, US
David M. Putzolu - Forest Grove OR, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G06F 9/44

US Classification:

712248, 712 25, 712 30, 712201

Abstract:

In one embodiment, a method is provided. The method of this embodiment includes generating, by a processor that includes a plurality of processing engines capable of executing program instructions, a packet. The method of this embodiment also includes transmitting the packet to at least one of the processing engines. Additionally, the method of this embodiment also includes, in response, at least in part to receipt of the packet by the at least one of the processing engines, modifying at least in part, by the at least one of the processing engines, a set of program instructions that the at least one processing engine is capable of executing. Of course, many modifications, variations, and alternatives are possible without departing from this embodiment.

US Patent:

7050394, May 23, 2006

Filed:

Dec 18, 2002

Appl. No.:

10/323400

Inventors:

Erik J. Johnson - Portland OR, US
Don Newell - Portland OR, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

H04L 12/56
H04L 12/26
H04J 1/16
H04J 3/14

US Classification:

3702301, 340 321, 370389, 37039552, 370912

Abstract:

A method includes extracting packets from within a received frame, generating digests of the extracted packets, and hashing the generated digests.

US Patent:

7072314, Jul 4, 2006

Filed:

Dec 7, 2005

Appl. No.:

11/296683

Inventors:

Ylian Saint-Hilaire - Hillsboro OR, US
Frederick William Strahm - Hillsboro OR, US
Erik J. Johnson - Portland OR, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

H04Q 7/00

US Classification:

370328, 370335, 370342, 4554321

Abstract:

Communicating over a network includes establishing a communication path between a mobile-device in a first communication area and a server through a home-agent, and maintaining the communication path through the home agent when the mobile-device moves to a second-communication-area.

US Patent:

7113487, Sep 26, 2006

Filed:

Apr 7, 2000

Appl. No.:

09/546633

Inventors:

Erik J. Johnson - Portland OR, US
Bernie N. Keany - Lake Oswego OR, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

H04L 12/28

US Classification:

370255, 370389

Abstract:

A forwarding element capable of forwarding protocol control information in an encapsulated form to a separate control element for processing. The forwarding element may include a proxy capable of intercepting protocol control information, encapsulating the protocol control information, and tunneling the encapsulated protocol control information to the control element for processing.