The name of this counter points to CCMs received with a CCM interval field that does not match the interval configured for this MEP's own maintenance association, a parameter mismatch between the two ends of a service, even though the recorded description text instead references cross-connection frames. Both symptoms stem from the same category of misconfiguration: a service where the two MEPs were not provisioned with identical CFM parameters. An admin seeing this counter increment would check that the CCM transmission interval configured on the remote MEP, for example 1 second versus this device's 100 milliseconds, actually matches this device's own setting for that service.