This Counter32 object counts good packets received by a port that exceed 1536 bytes and were discarded specifically for being too long, noting that packets from 1523-1536 bytes increment only rxOversizePkts while packets of 1537 bytes and above increment both counters. An admin troubleshooting dropped jumbo-frame traffic watches this counter to see whether frames are actually being discarded for exceeding the port's configured length limit. For example, a rising count here after a server started sending 9000-byte jumbo frames would tell the admin the port's maximum frame size setting needs to be increased to avoid discarding that traffic.