All ports
The total number of bytes of frame data received and transmitted on the port. Each frame counted:
- was any data or MAC control frame destined for any unicast, broadcast or multicast address (address match does not matter)
- Any length (including less than 64 bytes and greater than RX_MAXLEN bytes)
Also counted in this statistic is:
- Every byte transmitted before a carrier-loss was experienced
- Every byte transmitted before each collision was experienced, (that is, multiple retries are counted each time)
- Every byte received if the port is in half-duplex mode until a jam sequence was transmitted to initiate flow control. (The jam sequence was not counted to prevent double-counting)
Error conditions such as alignment errors, CRC errors, code errors, overruns and underruns do not affect the recording of bytes by this statistic.
The objective of this statistic is to give a reasonable indication of Ethernet utilization.