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Controller Placement for Resilient Network State Synchronization in Multi-Controller SDN
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DOI：10.1109/LCOMM.2020.2979072.png)
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Abstract
En 中文
In a multi-controller SDN, the network state is replicated or distributed between the controllers requiring repeated synchronization. This synchronization cost depends on controller locations, as well as needs to be low and resilient to network failures. Leveraging a Steiner tree-based inter-controller latency model, a multi-objective integer linear program is presented to deduce the controller placement optimizing (a) synchronization cost in failure-free scenarios, and, (b) resilience against single-link failures. The proposed approach incurs low computational complexity and post-failure network reconfiguration cost, while achieving near-optimal post-failure synchronization cost. We extensively evaluate the proposed model over real networks, and demonstrate its effectiveness.
Keywords:
Steiner trees
Synchronization
Computational modeling
Resilience
Switches
Standards
Software defined networks
inter-controller communication
network state synchronization
controller placement
steiner tree model
Journal
IF:
4.4
Papers:
1.3W
Citations:
2.2W