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Is mac address flapping the reason why switches don't exchange switching information just like routers exchange routing information?

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    You have asked the same question with various accounts four times now. You have received the same answer every time. Please stop posting this question, the answer won’t change. I will delete every next identical question from now on. – Teun Vink Apr 14 at 7:58
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No.

Switches don't exchange MAC tables because they don't need to. Each switch is fine with discovering MAC-port associations by itself (self-learning MAC bridge).

MAC address flapping happens when a source MAC continually changes ports from the switch's perspective. This is usually due to misconfiguration or unconfigured redundant links in the network.

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