Recognition Display MAC Address Table Aging Test for Managed Networks
Intent: decide — A recognition display that loads championship rosters and alumni portraits without issue most of the day, then goes blank for 15–30 seconds at irregular intervals before reconnecting on its own, is showing a classic MAC address table aging symptom. The managed switch serving the display has flushed its learned MAC address entry for the display’s network interface before the display generated enough traffic to renew it. The switch briefly floods traffic — or drops unicast frames destined for the now-unknown MAC — and the recognition display loses connectivity until the switch relearns the address. The content management system logs a disconnection; the display shows a spinner or goes dark; then everything recovers without any administrator intervention, making the fault difficult to reproduce on demand and easy to misattribute to the display hardware or the content platform.
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