This read-only INTEGER reports the type of this interface, noting that for standardized MIB-2 interface types this value is redundant with the generic ifType, while CNT-specific interface types are appended to the end of that standardized list. An admin encountering a type value beyond the normal MIB-2 range would recognize it as a CNT-proprietary interface type rather than a documentation error. For example, an unusually high cntifType number would prompt the admin to consult CNT-specific documentation rather than the standard IANA interface type list.