Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-07-27
2010-02-23
Pezzlo, John (Department: 2419)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S392000, C370S469000
Reexamination Certificate
active
07668161
ABSTRACT:
An apparatus for classifying data packet protocol values in a packet architecture comprising a packet header and a packet payload including an extension header is described. The apparatus comprises a processor configured to specify a packet protocol value in an extension header of a type requiring mandatory examination by at least one device receiving a packet. For example, an apparatus comprises a packet processor unit configured to generate a data packet comprising the extension header, wherein the extension header specifies a packet protocol value, wherein the extension header is a mandatory extension requiring examination by a receiving apparatus to which the packet may be sent, wherein the packet protocol value is also carried in one or more additional headers in the packet, and wherein the extension header enables classifying the packet based on the packet protocol value and without traversing the additional headers in the packet.
REFERENCES:
patent: 2005/0135261 (2005-06-01), Lee et al.
patent: 2007/0195761 (2007-08-01), Tatar et al.
patent: 2008/0253398 (2008-10-01), Calvignac et al.
S. Deering et al., “Internet Protocol, Version 6 (IPv6) Specification,” Internet Engineering Task Force (IETF) Network Working Group Request for Comments (RFC) 2460, Dec. 1998. pp. 1-32.
Information Sciences Institute, University of Southern California, “Internet Protocol DARPA Internet Program Protocol Specification,” IETF RFC 0791, Sep. 1981, pp. 1-42.
S. Deering et al., “Internet Protocol, Version 6 (IPv6) Specification,” IETF RFC 1883, Dec. 1995, pp. 1-31.
D. Johnson et al., “Mobility Support in IPv6,” IETF RFC 3775, Jun. 2004, pp. 1-134.
Forster David Charlton
Morgan Dewi Gerwyn
Cisco Technology Inc.
Hickman Palermo & Truong & Becker LLP
Pezzlo John
LandOfFree
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