Control message from a switch to controller in SDN is termed as:
a. Flow-rule message
b. PACKET-IN message
c. Control message
d. Data message
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No c) Control message
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Control message from a ‘switch to controller’ in SDN is termed as Flow-rule message.
Answer: Option (a)
Explanation:
OpenFlow or flow-rule is considered to be a protocol that allows the server to convey the network type switches on where to send those packets. In existing networks there are several procedures like each and every switch has proprietary services or software that instructs on what to do.
With the flow-rule, the movement of packets will be centralised such that the networks are executed in program independent manner on those switches and the data center gear.
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