Towards a Deeper Understanding of Managing Dynamic Optical Networks Under Link Failures
The authors quantify the impact of link failures after initial rerouting and show that some nodes continue to drop a significant portion of its traffic. They discuss the practical tradeoffs in rebalancing the network using redimensioning. Failures in optical networks can result in loss of enormous amounts of data. For critical applications that require rapid service recovery, many protection schemes have been proposed. However, many applications can tolerate short term outages and can be exempt from the added expense of providing protection. These applications can then be classified under best-effort traffic, which is rerouted when there is a failure.