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US 2010/0135291 A1Published application
In-band signalling for point-point packet protection switching
AssigneeNortel Networks Limited
InventorsDavid MARTIN, Marc HOLNESS, Bernard ST-DENIS
Life of this patent
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Abstract
A method of controlling traffic forwarding in a Provider Backbone-Traffic Engineered (PBB-TE) network. A protection group (PG) is defined, and including N working Traffic Engineered Service Instances (TESIs) and M protection TESIs. An Automatic Protection Switching Protocol Data Unit (APS PDU) is defined, which includes information defining at least a state of the protection group. This APS PDU is forwarded only through the protection TESI(s).
Claims9
A method of controlling traffic forwarding in a Provider Backbone-Traffic Engineered (PBB-TE) network, the method comprising:
- defining a protection group including N working Traffic Engineered Service Instances (TESIs) and M protection TESIs, where N≧1 and M≧1;
- and
- providing a Automatic Protection Switching Protocol Data Unit (APS PDU) including information defining at least a state of the protection group;
- and
- forwarding the APS PDU through each protection TESI.
2 more elements
Dependencies are inferred from the claim text.