A survey on link failures in software defined networks
V. Muthumanikandan, Chinnaiah Valliyammai · 2015
Link failures are a major threat that occurs within network topology. Probably link failures occur due to low converging time, previously allocated delay and bandwidth, and iterative loops which degrade the performance of the network. Link failures results in invalid routes and unreachable routes within Ethernet based networks. Invalid routes record the duration of the each route containing failed link and summation of invalid route time. Unreachable routes records the total number of routes that are failed during network segregation. In cloud infrastructure, generally link failures have potential loss of too many small packets such as ACK and alive messages. In order to identify failures initially correlate the events log with network traffic which is observed in the links of an event.