Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via frequency channels
Reexamination Certificate
2006-03-14
2006-03-14
Pham, Brenda (Department: 2664)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via frequency channels
C370S535000
Reexamination Certificate
active
07012933
ABSTRACT:
A method of transmitting packets from the source edge router through the label switch router to the destination edge router, comprising the steps of:assigning different protocol type indicators at the source edge router to user MPLS packets and to non-user MPLS packets of at least one additional protocol type;at the label switch router, forwarding MPLS packets received from the source edge router or another label switch router in such a manner as to preserve the protocol type indicator of the packet transport protocol of each received MPLS packet;at the destination edge router, recognizing the protocol type indicator of the transport protocol of the MPLS packets received from the label switch router, and segregating the user MPLS packets from non-user MPLS packets. Preferably, user and non-user MPLS packets are assigned the same MPLS label and sent via the same label switched path. Corresponding enhanced MPLS network is also provided.
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Mark Barry Ding Ken
Patriarche Douglas Heath
Donnelly Victoria
Pham Brenda
Tropic Networks Inc.
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