Allied Telesis AT-S68 - Manual (Page 82)

Ethernet Statistics
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RX Multicast
The number of multicast packets received on the switch.
RX Unicast
The number of unicast packets received on the switch.
RX CRC_ERR
The number of packets with Cyclic Redundancy Check (CRC)
errors but with the proper length (64-1518 bytes) received by the
switch.
RX Alignment_ERR
The number of packets with alignment errors received on the
switch.
RX Fragment
The number of undersized packets received on the switch.
RX Oversize
The number of packets exceeding the maximum specified by IEEE
802.3 (1518 bytes including the CRC) received on the switch.
3. Type U to update the switch’s statistics display or R to return to the
previous menu.