![]() ![]() These types of packets are dropped at the switch port, and the counter increments. This packet is not intended to be received by any other device the health is ensured just by being able to send the packet. For example, Cisco IOS software uses Ethernet loopback packets to ensure interface health. The security appliance is connected to another Cisco device that has Ethernet keepalives.A trunk port received a tag that is not allowed or an untagged packet.An access port received an 802.1Q-tagged packet.Note For interfaces in the same VLAN, even if the nameif command was not configured, switching within the VLAN is successful, and this counter does not increment. ![]()
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