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Which protocol is used for link discovery when OpenFlow switches are separated by a non- OpenFlow switch?
A. BDDP
B. RSTP
C. LLDP
D. LACP
Correct Answer: A
Explanation/Reference:
Explanation: LLDP is used to discover direct links between switches and BDDP is used to discover the switches in the same broadcast domain.
Note: Using a link-discovery module, the controller generates both LLDP and broadcast packets (referred to as BDDPs) and sends them to all neighboring switches on a regular basis.
Reference: OpenFlow Controller
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