The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 2013
Filed:
Mar. 23, 2010
Kurt Dobbins, Bedford, NH (US);
Thomas A. Grant, Derry, NH (US);
David J. Ruffen, Salem, NH (US);
Laura Kane, Merrimack, NH (US);
Theodore Len, Amherst, NH (US);
Philip Andlauer, Londonderry, NH (US);
David H. Bahi, Manchester, NH (US);
Kevin Yohe, Amherst, NH (US);
Brendan Fee, Nashua, NH (US);
Chris Oliver, Rochester, NH (US);
David L. Cullerot, Manchester, NH (US);
Michael Skubisz, Durham, NH (US);
Kurt Dobbins, Bedford, NH (US);
Thomas A. Grant, Derry, NH (US);
David J. Ruffen, Salem, NH (US);
Laura Kane, Merrimack, NH (US);
Theodore Len, Amherst, NH (US);
Philip Andlauer, Londonderry, NH (US);
David H. Bahi, Manchester, NH (US);
Kevin Yohe, Amherst, NH (US);
Brendan Fee, Nashua, NH (US);
Chris Oliver, Rochester, NH (US);
David L. Cullerot, Manchester, NH (US);
Michael Skubisz, Durham, NH (US);
Enterasys Networks, Inc., Salem, NH (US);
Abstract
Connection-oriented services for packet switched data communications networks are provided, including distributed MAC and protocol alias addresses discovery. Link state topology exchanges provide each switch with network topology graphs to determine paths from source to destination end systems. Broadcast frames are resolved to unicast frames to reduce broadcast traffic. Policy restrictions may be applied prior to connection setup. Connection management includes source-routed mapping of connections on the desired path. Distributed call rerouting is provided so switches receive topology change notifications and unmap failed link connections. Broadcast/unknown services provide non-resolvable packet restricted flooding. Connection-oriented switching is provided based on source and destination MAC addresses. Resolution of networks outside the switch domain is enabled by listening for network and server route advertisements and maintaining best routes to the networks and servers. Route and path metrics may be combined to determine paths from access switches to egress switches connected to the external network.