This OID counts, in packets, how many outbound frames transmitted from this 10 Gbps Ethernet (10GbE) interface were logged with a CRC or frame-alignment error. Because this counter tracks the egress side, a nonzero value suggests the interface's own transmit path or optics may be corrupting frames before they even leave the device, rather than a fault introduced further along the circuit. For example, if a 10GbE client port carrying a customer's Ethernet handoff shows outbound CRC errors while the far-end receiver reports the same problem, an admin would inspect this local interface's transmit optics as the likely source.