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SONET-add-drop-multiplexer-with-packet-over-SONET-capability

Signal synchronization method and receiver device for packet communication

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SONET add/drop multiplexer with packet over SONET capability

Details

Inventors: O'Connor, Donald;
Assignee: Fujitsu Network Communications, Inc. (Richardson, TX)
Primary Examiner: Vu; Huy D.
Assistant Examiner:
Attorney, Agent or Firm: Baker Botts L.L.P.

An advanced SONET add/drop multiplexer capable of supporting packet over SONET and multiprotocol label switching. The add/drop multiplexer is capable of adding and/or dropping both STM and packet traffic, such as Internet Protocol traffic. This SONET add/drop multiplexer allows Internet Protocol streams which are added or dropped at different nodes to be carried over the same SONET path in a network, thereby greatly saving bandwidth.

DETAILED DESCRIPTION The present invention provides an apparatus and method for efficiently utilizing bandwidth within a SONET network carrying data packets such as Internet Protocol packets.
The invention does so by providing packet switching capability within SONET add/drop multiplexers.
An embodiment of the present invention provides for the inclusion of MPLS switching capability within a SONET add/drop multiplexer.
Another embodiment of the present invention provides for the inclusion of packet switching capability within a SONET add/drop multiplexer along with ATM switching capability.
Another embodiment of the present invention provides for the inclusion of edge node service adaptation functionality within a SONET add/drop multiplexer.
Thus, it is an object of the present invention to optimize allocation of SONET transport bandwidth carrying packet traffic.
It is a further object of the present invention to provide the ability to offer different grades of packet traffic service in a SONET network.
It is another object of an embodiment of the present invention to provide the ability to create virtual private networks over a SONET network.
It is a further object of embodiment of the present invention to provide the ability to perform traffic engineering in a SONET network carrying packet traffic.
It is another object of the present invention to reduce capital costs for Internet service providers connecting to SONET networks.
It is a further object of the present invention to reduce the amount of state information that must be maintained in a SONET network.

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