A read-only enumerated value reporting the 802.3-defined class of the repeater, classI(1), classII(2), or unknown(3), which governs how many repeaters can be chained within one collision domain. This matters when designing or troubleshooting shared-media Ethernet topologies, since mixing repeater classes incorrectly can violate 802.3 timing rules: only one Class I repeater, but up to two Class II repeaters, may sit between any two DTEs. A repeater reporting classII(2) tells the admin that at most one more Class II repeater can be cascaded between it and any given end station.