Igor Lasic

US Patent:

6587433, Jul 1, 2003

Filed:

Feb 10, 1999

Appl. No.:

09/247836

Inventors:

Michael S. Borella - Naperville IL
Igor Lasic - Brighton MA
Ikhlaq S. Sidhu - Vernon Hills IL
Vandana Upadhyay - Evanston IL

Assignee:

3Com Corporation - Santa Clara CA

International Classification:

H04J 314

US Classification:

370230, 370235, 370401, 370420

Abstract:

A method and system for assigning priority or classes of service of messages delivered in a packet-based network. The method and system allows for implementation of differentiated classes of service according to the requirements of the network application or user.

US Patent:

20030067917, Apr 10, 2003

Filed:

Oct 4, 2002

Appl. No.:

10/264493

Inventors:

Lynne Morrison - Southboro MA, US
Igor Lasic - Newton MA, US
Prabir Datta - Marlborough MA, US

Assignee:

ADC Broadband Access Systems, Inc.

International Classification:

H04L012/28

US Classification:

370/390000, 370/392000

Abstract:

A method for internet groups management protocol proxying having a backup proxy configured as a secondary interface backing up a primary interface uses metrics and monitoring to switch interfaces upon failure of the primary interface.

US Patent:

58450912, Dec 1, 1998

Filed:

Feb 15, 1996

Appl. No.:

8/601745

Inventors:

James W. Dunne - Boston MA
Igor Lasic - Allston MA

Assignee:

Bay Networks, Inc. - Santa Clara CA

International Classification:

G06F 1338
G06F 1517

US Classification:

3952007

Abstract:

A method for filtering an internetwork packet wherein multiple paths to a destination network are provided. The method comprises the step of providing a forwarding list that comprises a plurality of entries selected by a user. The forwarding list indicates a plurality of possible paths to a selected destination. One of the entries is selected by the user as a primary entry that indicates a default path. When an internetwork packet is destined for the destination network is received, the packet is forwarded to the destination network via the default path if the primary entry indicates a valid path. Otherwise, the packet is forwarded to the destination network via another path as indicated by another entry. According to an alternative embodiment, a different forwarding list is provided for each subnetwork of a source network, and the forwarding list is selected based on the source address of the packet.

US Patent:

57403759, Apr 14, 1998

Filed:

Feb 15, 1996

Appl. No.:

8/601779

Inventors:

James W. Dunne - Boston MA
Igor Lasic - Allston MA

Assignee:

Bay Networks, Inc. - Santa Clara CA

International Classification:

H04J 1500

US Classification:

39520068

Abstract:

A method for filtering and forwarding local broadcast traffic across network boundaries. According to one embodiment, the method comprises the step of providing a broadcast list for a source network wherein the broadcast list includes at least one entry that specifies a network address. When a local broadcast packet is received from the source network, a copy of the local broadcast packet is made for each entry in the broadcast to produce a copied packet. The destination address of each copied packet is replaced with a corresponding destination address of a broadcast list to produce a modified packet, and the modified packets are transmitted such that the modified packets are delivered to networks specified by the broadcast list.