Allied Telesis AT-S20 - Manual (Page 104)

Statistics: Received and Transmitted Ethernet Frames
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Table 6-3 Received Frames
Frame Type Description
Received Good
Frames Total number of frames received by the switch since the last reset.
Filtered Frames Frames received by the switch but not forwarded because the destination is
within the same LAN segment, therefore, the frame was already seen by all
nodes on the segment.
Broadcasts Frames received and then forwarded by the switch destined for nodes on the
network.
Multicasts Frames received and then forwarded by the switch destined for multiple but
specific addresses.
CRC Errors Frames with a cyclic redundancy check (CRC) error but with the proper length
(64-1518 bytes).
Alignment errors Frames with a non-integral number of bytes, that is, frame length in bits are not
evenly divisible by 8, but with the proper length (64-1518 bytes).
Undersized Frames Frames less than the minimum specified by IEEE 802.3 (64 bytes including the
CRC).
Fragments Frames that are shorter than 96 bits, including 64 bits of preamble and may
occur because of a collision or from a failed transceiver transmitting bad
packets.
Long frames Frames exceeding the maximum specified by IEEE 802.3 (1518 bytes including
the CRC).
RMON The following frames relate to RMON.
64 Byte Frames Total number of transmitted/received frames (including bad frames) that were
64 octets (excluding framing bits but including FCS octets).
65-127 Byte Frames Total number of transmitted/received frames (including bad frames) that were
between 65 and 127 octets (excluding framing bits but including FCS octets).
128-255 Byte Frames Total number of transmitted/received frames (including bad frames) that were
between 128 and 255 octets (excluding framing bits but including FCS octets).
256-511 Byte Frames Total number of transmitted/received frames (including bad frames) that were
between 256 and 511 octets (excluding framing bits but including FCS octets).
512-1023 Byte
Frames Total number of transmitted/received frames (including bad frames) that were
between 512 and 1023 octets (excluding framing bits but including FCS octets).
1024-1518 Byte
Frames Total number of transmitted/received frames (including bad frames) that were
between 1024 and 1518 octets (excluding framing bits but including FCS
octets). If the LONG bit is set, this statistic counts frames that are between 1024
and 1536 octets (excluding framing bits but including FCS octets).