SARD: A Smart Approach of Rule Division for fast flow-level consistent update in SDN

摘要

In Software Defined Networks (SDN), the configuration inconsistency during updates is one main source of network instability. Even if the validity of the initial and final configurations is guaranteed, the interim complex and inconstant network states might cause routing conflicts and transmission disruption. Therefore, an efficient updating scheme with configuration consistency is required. Current schemes well guarantee the packet-level consistent update, but perform poorly for the flow-level case.