Monitoring primary and local repair paths on all hops between two nodes

A network device comprising:

• one or more memories having computer-readable instructions stored therein;
• and
• one or more processors configured to execute the computer-readable instructions to:
• generate a discovery probe at a source node (Node-S) to detect at least one node with a Fast Re-Route (FRR) indicator along an FRR path that includes a plurality of next available nodes, wherein the discovery probe is forwarded to the plurality of next available nodes to initiate a repair path discovery along the FRR path;
• upon the discovery probe reach a first node with the FRR indicator, generate:
• a primary probe configured to detect a primary path comprising a first set of nodes to forward the primary probe towards a destination node;
• and
• a repair probe configured to detect a repair path comprising a second set of nodes to forward the repair probe towards the destination node;
• and
• in response to receiving the primary probe via the primary path and the repair probe via the repair path at the destination node, send the primary probe and the repair probe back to the source node to monitor the FRR path between the source node and the destination node, wherein the monitored FRR path sent to the source node indicates a node value representative of a total number of nodes in the primary path, and a hop count value indicated where the repair probe is generated.

One or more non-transitory computer-readable storage media comprising computer-readable instructions, which when executed by one or more processors of a network device, cause the network device to:

• generate a discovery probe at a source node (Node-S) to detect at least one node with a Fast Re-Route (FRR) indicator along an FRR path that includes a plurality of next available nodes, wherein the discovery probe is forwarded to the plurality of next available nodes to initiate a repair path discovery along the FRR path;
• upon the discovery probe reach a first node with the FRR indicator, generate:
• a primary probe configured to detect a primary path comprising a first set of nodes to forward the primary probe towards a destination node;
• and
• a repair probe configured to detect a repair path comprising a second set of nodes to forward the repair probe towards the destination node;
• and
• in response to receiving the primary probe via the primary path and the repair probe via the repair path at the destination node, send the primary probe and the repair probe back to the source node to monitor the FRR path between the source node and the destination node, wherein the monitored FRR path sent to the source node indicates a node value representative of a total number of nodes in the primary path, and a hop count value indicated where the repair probe is generated.