Method for supporting SNCP over packet network
AssigneeOrckit IP, LLC
InventorsDaniel Cohn, Rafi Ram
Life of this patent
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Abstract
A method is presented for supporting SNCP over a packet network connecting to two SDH sub-networks and transporting one or more SDH paths that are SNCP-protected in both SDH sub-networks. The packet network connects to each of two sub-network interconnection points by a working path and a protection path. The packet sub-network may provide the same type of path protection as an SDH sub-network using SNCP, while avoiding bandwidth duplication.
Claims57
A first device operable in first and second states for providing revertive or non-revertive path protection between first and second networks over a third network that is packet-based, using second and third devices each coupled to transport data traffic between the second and third networks, the first device comprising:
- a first port for coupling to the first network;
- a second port for communicating with the second device over the third network for transporting data traffic between the first and second networks;
- and
- a third port for communicating with the third device over the third network,
- wherein in the first state the first device is operative to transport data traffic only between the first and second ports, wherein in the second state the first device is operative to transporting data traffic only between the third and first ports, and wherein the first device shifts from the first to second state in response to detecting a failure,
- wherein the first or second network comprises, is based on, or uses, a ring topology.
A first device operable in first and second states for providing revertive or non-revertive path protection between first and second networks over a third network that is packet-based, using a second device coupled to transport data traffic between the first and third networks, and a third device coupled between the second and third networks, the first device comprising:
- a first port for coupling to the first network;
- a second port for communicating with the third device over the third network for transporting data traffic between the first and second networks;
- and
- a third port for communicating with the second device over the third network,
- wherein in the first state the first device is operative to transport data traffic only between the first and second ports, wherein in the second state the first device is operative to transporting data traffic only between the third and second ports, and wherein the first device shifts from the first to second state in response to detecting a failure,
- and wherein the first or second network comprises, is based on, or uses, a ring topology.
Dependencies are inferred from the claim text.