Isso soa como um bug desagradável que eu encontrei em um par de 5548, o que fez com que os switches não conseguissem aprender novos endereços mac após 49,7 dias. . O sintoma é que os unicasts são enviados em todas as portas
Devices stop to learn MAC addresses after 49.7 days
After 49.7 days of operation, the device stops re-learning MAC addresses. These MACs which were previously learned will not appear in MAC address table. As a result traffic streams sent to previously learned MAC addresses are treated as unknown-unicast traffic and flooded within the VLAN.
MAC address learning mechanism was fixed so that both learning new addresses and re-learning existing addresses are updating the MAC Address database.
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