Inventors
Amre Shakimov, Srinivas Neginhal, Anupam Chanda, Su Wang, Pankaj Thakkar
Publication date
2018/3/20
Patent office
US
Patent number
9923760
Application number
14814228
Description
Some embodiments provide a network control system with techniques for handling failover of network controllers with minimal churn in the network state distributed to the forwarding elements of the network. Specifically, in some embodiments, the local controller designates a waiting period before computing output network state data entries based on the new version of the input network state data entries. Alternatively, or conjunctively, the local controller of some embodiments calculates the changes between the new version of input state data entries and its stored existing version of the input state data entries, and only generates new output network state data entries based on the calculated changes, in order to minimize unnecessary recalculations of the output network state data entries. The new output network state data entries may then be used by the local controller to provision its managed forwarding element.
Total citations
20182019202020212022202331111
Scholar articles
A Shakimov, S Neginhal, A Chanda, S Wang… - US Patent 9,923,760, 2018