Patent Document ID: 20130215738
Application ID: 13839429
Patent Flag: 0

Claim One:
1. A controller to provide network reliability, the controller comprising: a processing device; and a memory device to store instructions that, when executed by the processing device, cause the processing device to perform operations comprising: extracting a plurality of inter-domain bypass paths between a first intra-domain portion and a second intra-domain portion in a first network via a second network; determining an inter-domain bypass path from the plurality of inter-domain bypass paths to link the first intra-domain portion and the second intra-domain portion in the first network via the second network in response to an intra-domain connectivity failure between the first intra-domain portion and second intra-domain portion; and establishing an intra-domain label switched path in the second network and a tunnel from the first intra-domain portion in the first network to the intra-domain label switched path in the second network, the intra-domain label switched path and the tunnel being associated with the inter-domain bypass path.