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An administrator wants the switches to forward traffic in the legacy mode. If all the controllers fail, which action should the administrator take?
A. Install a packetin rule as the lowest priority rule in the flow table.
B. Configure the instance to fail in standalone mode.
C. Install a packet_out rule as the lowest priority rule in the flow table.
D. Configure the instance to fail in interruption mode.
Correct Answer: B
Explanation/Reference:
Explanation: OpenFlow instance connection interruption mode You can set the type of behavior when the switch loses connection with the controller.
fail-standalone
If the switch loses connection with all of the controllers, packets and messages of new flows behave as a legacy switch or router would. Existing flows of this OpenFlow instance are removed.
Reference: HP OpenFlow Switches
http://h20628.www2.hp.com/km-ext/kmcsdirect/emr_na-c03512348-4.pdf (page 21)
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