Patent ID: 8717899

Claim:
A method comprising: generating, at an intermediate node in a data network, a link state advertisement (LSA) having one or more type-length-value (TLV) objects including a plurality of indicators each corresponding to a respective Differentiated Service Traffic Engineering (DS-TE) class, each indicator configured to, if set, report one or more out of resources (OOR) conditions of the intermediate node or a line card of the intermediate node for the respective DS-TE class, the one or more OOR conditions indicating the intermediate node will reject a new label switched path (LSP) of the respective DS-TE class; in response to an OOR condition of the intermediate node or line card of the intermediate node for a particular DS-TE class, setting the respective indicator that corresponds to the particular DS-TE class in the one or more TLV objects of the LSA; and reporting the one or more OOR conditions of the intermediate node or line card of the intermediate node for the particular DS-TE class to a head-end node using the LSA to cause the head-end node to avoid using the intermediate node or line card of the intermediate node in a new LSP of the particular DS-TE class.