Counts packets received during the last sampling interval that were shorter than 64 octets and also had a bad FCS, either an FCS error or alignment error. Admins treat a rising fragment count as evidence of collisions or a failing transceiver on the segment, since fragments are typically the byproduct of a collision cutting a frame short. A segment showing high extremeRtStatsFragments alongside high extremeRtStatsCollisions points an admin toward a duplex mismatch or excessive collision domain contention.