Michael J Patrick

US Patent:

60731788, Jun 6, 2000

Filed:

Dec 9, 1996

Appl. No.:

8/762709

Inventors:

Thomas K. Wong - Pleasanton CA
Swee B. Lim - Cupertino CA
Sanjay R. Radia - Fremont CA
Panagiotis Tsirigotis - Mountain View CA
Robert J. Goedman - Palo Alto CA
Michael W. Patrick - Assonet MA

Assignee:

Sun Microsystems, Inc. - Palo Alto CA
Motorola, Inc. - Schaumburg IL

International Classification:

G06F 1300

US Classification:

709229

Abstract:

A preferred embodiment of the present invention includes a method and apparatus for allocating and using IP addresses in a network of client systems. More specifically, the present invention includes a router which monitors the assignments of IP addresses by a DHCP server. As each IP address is assigned, the router associates the assigned IP address with an trusted identifier which identifies the client system. Subsequently, if the router received a packet directed at the assigned IP address, the router forwards the packet to the client system having an trusted identifier associated with the destination address of the IP packet. Additionally, if the router receives a packet from a client system, it uses the trusted identifier of the client system to find IP addresses associated with the client system. If the source address of the IP packet is not included in the IP addresses associated with the client system, the packet is discarded.

US Patent:

59220490, Jul 13, 1999

Filed:

Dec 9, 1996

Appl. No.:

8/762933

Inventors:

Sanjay R. Radia - Fremont CA
Thomas K. Wong - Pleasanton CA
Swee B. Lim - Cupertino CA
Panagiotis Tsirigotis - Mountain View CA
Robert J. Goedman - Palo Alto CA
Michael W. Patrick - Assonet MA

Assignee:

Sun Microsystems, Inc. - Palo Alto CA

International Classification:

G06F 1300

US Classification:

709220

Abstract:

A preferred embodiment of the present invention includes a method and apparatus for routing an IP packets in a network of client systems. The router forwards IP packets between the client systems and the server systems. More specifically, the router can be pre-configured to include one or more "routes. " Each route is a mapping between an IP address and a client system. The router may also learn route from other routers and by analysis of IP packets. Preferably, the routes known by the router are included in a route table. The router also monitors DHCP assignment of IP addresses to client systems within the network. When the DHCP assignment of an IP address is detected, the router creates a new route that associates the newly assigned IP address and the corresponding client system. The new route is marked so that it may only be overwritten by a subsequent DHCP assignment. The router then updates the route table to include the new route and purges the route table of learned routes that have been invalidated by the new route.

US Patent:

58482334, Dec 8, 1998

Filed:

Dec 9, 1996

Appl. No.:

8/762402

Inventors:

Sanjay R. Radia - Fremont CA
Swee Boon Lim - Cupertino CA
Panagiotis Tsirigotis - Mountain View CA
Thomas K. Wong - Pleasanton CA
Robert J. Goedman - Palo Alto CA
Michael W. Patrick - Assonet MA

Assignee:

Sun Microsystems, Inc. - Palo Alto CA

International Classification:

G06F 1100

US Classification:

39518701

Abstract:

The present invention includes a method and apparatus for filtering IP packets based on events within a computer network. More specifically, the present invention includes a services management system, or SMS. The SMS manages network connections between a series of client systems and a router. An access network control server (ANCS) manages the configuration of the router. The SMS monitors activities or events that occur within the network. In response to these events, the SMS dynamically downloads filtering profiles to the ANCS. The ANCS then uses the downloaded filtering profiles to reconfigure the router. The router then uses the filtering rules to selectively discard or forward IP packets received from the client systems.

US Patent:

20180014081, Jan 11, 2018

Filed:

Jul 10, 2017

Appl. No.:

15/644823

Inventors:

- San Jose CA, US
Pavlo Shcherbyna - Santa Clara CA, US
Alex Muller - Pardes Hanna Karkur, IL
Vladyslav Buslov - Kiev, UA
Victoria Sinitsky - Haifa, IL
Michael W. Patrick - Assonet MA, US
Nitin Sasi Kumar - San Ramon CA, US

International Classification:

H04N 21/61
H04L 29/06
H04B 1/707

Abstract:

Approaches for performing all DOCSIS downstream and upstream data forwarding functions using executable software. DOCSIS data forwarding functions may be performed by classifying one or more packets, of a plurality of received packets, to a particular DOCSIS system component, and then processing the one or more packets classified to the same DOCSIS system component on a single CPU core. The one or more packets may be forwarded between a sequence of one or more software stages. The software stages may each be configured to execute on separate logical cores or on a single logical core.