BMC-SDN: Blockchain-Based Multicontroller Architecture for Secure Software-Defined Networks

Table 2

Description of the data structures.

Data stores	Description
Mastership store	Associates between each switch and its master.
Network topology store	Describes the network topology in terms of links and switches.
Flow store	Saves the flows of each switch from the master controller to the slave controller, when a change in the flow table is detected.
Host store	Manages the list of network hosts.
Application store	Manages the application inventory.
Intent store	Manages the inventory of intentions. Intentions are part of the ONOS intention framework used by applications to define the network policy, without specifying in detail how the data plan should actually be programmed.
Component configuration store	Stores system-wide configurations for various software components in ONOS.
Network configuration store	Stores the inserted network configurations in ONOS.
Security mode store	Manages the authorizations granted to applications using the RAFT protocol [33]. Instead, security violations are handled using antientropy protocol.