Sonet add/drop multiplexer with packet over sonet capability
AssigneeFujitsu Limited
InventorDonald O'Connor
Life of this patent
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Abstract
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.
Claims13
A method for supporting packet communications in a synchronous optical network, the method comprising:
- receiving a packet data at a synchronous optical network element;
- and
- switching the packet data to a path which provides an optical link between the synchronous optical network element and a remote synchronous optical network element;
- wherein the switching is made under a multiprotocol label switching to concentrate a plurality of label switched paths to a concentrated path and provides a virtual private network over the synchronous optical network.
A node in a synchronous optical network, comprising:
- a local area network (LAN) interface configured to receive a packet data;
- a time division multiplexer operable to couple the LAN interface to the synchronous optical network;
- and,
- a multiprotocol label switching (MPLS) router operable to switch the packet data from the LAN interface to a path across the synchronous optical network and to provide a virtual private network over the synchronous optical network, wherein the switching is made under a multiprotocol label switching to concentrate a plurality of label switched paths to a concentrated path.
A synchronous optical network element comprising:
- an Ethernet local area network (LAN) interface operable to receive packet data for a plurality of label switched paths;
- a synchronous optical add/drop multiplexer configured to couple a LAN interface to a synchronous optical network;
- and,
- a multiprotocol label switch (MPLS) router operable to switch the packet data from the LAN interface to a path across the synchronous optical network and to provide a virtual private network over the synchronous optical network, wherein the switching is made under a multiprotocol label switching to concentrate a plurality of label switched paths to a concentrated path.
Dependencies are inferred from the claim text.