Hierarchical Processing and Propagation of Partial Faults in a Packet Network

A method comprising:

• receiving a fault message comprising degradation data associated with a fault;
• determining whether an available bandwidth is less than a bandwidth reserved for a plurality of connections associated with the fault;
• and
• modifying the bandwidth reserved for the connections if the available bandwidth is less than the bandwidth reserved for the connection.

A network comprising:

• a plurality of at least partially interconnected nodes;
• an aggregated link connecting two of the nodes;
• a first tunnel comprising at least some of the nodes and the aggregated link, the first tunnel configured to transport a plurality of service instances;
• and
• a second tunnel comprising at least some of the nodes but not the aggregated link, the second tunnel configured to transport the service instances,
• wherein some of the service instances are rerouted from the first tunnel to the second tunnel when a fault occurs.