Upon receipt of a configuration BPDU with the topology change flag set, how do the downstream switches react?
- By moving all ports to a blocking state on all switches
- By flushing out all MAC addresses from the MAC address table
- By temporarily moving all non-root ports to a listening state
- By flushing out all old MAC addresses from the MAC address table
- By updating the Topology Change version flag on the local switch database
Explanation: Upon receipt of a TCN BPDU, a switch sets the age for all MAC addresses to 15 seconds. Non-active/older entries are flushed from the MAC address table.
Exam with this question: CCNPv8 ENCOR Chapter 2: Do I Know This Already? Quiz Answers
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