Allied-telesis AT-S25 Manual do Utilizador descarregar pdf (Página 115)

AT-S25 Version 1.4 User’s Guide

115

Table 5 defines the different types of received frames.

Table 5 Received Ethernet 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 by the switch destined for ALL nodes on the

network, excluding multicast frames.

Multicasts Frames received by the switch destined for multiple but specific

addresses, excluding broadcast frames.

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); also called runts.

Fragments Total undersized frames, frames with alignment errors, and frames

with FCS errors (CRC errors).

Long Frames Frames exceeding the maximum specified by IEEE 802.3 (1518 bytes

including the CRC).

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