Westermo RedFox Series - Manual (Page 194)

Westermo OS Management Guide
Version 4.17.0-0
Packet Size Statistics Counters for good Ethernet packet of the following size
intervals are provided: 64 bytes, 65-127 bytes, 128-255 bytes, 256-511
bytes, 512-1023 bytes, and 1024-MAXPKTSIZE bytes, where MAXPKTSIZE is
1632.
These size intervals match the corresponding RMON statistics counters, ex-
cept for the MAXPKTSIZE (1632 instead of 1518).
9.1.3 Dropped Inbound Packets
Counters for two types of dropped inbound packets are provided. Note, these
packets are good Ethernet packets, but are dropped due to the reasons given
below.
Filtered Inbound packets dropped due to VLAN mismatch or because the port
was in LEARNING, LISTENING or BLOCKING state.
Discarded Packets dropped due to lack of buffer space.
9.1.4 Erroneous Inbound Packets
The following counters for received erroneous packets are provided:
Undersized packet Number of packets smaller than 64 bytes, and with a valid
FCS.
This corresponds to the RMON MIB etherStatsUndersizePkts object.
Oversized packet Number of packets larger than 1632 bytes, and with a valid
FCS.
This corresponds to the RMON MIB etherStatsOversizePkts object, except
for the used MAXPKTSIZE (1632 instead of 1518 bytes).
Fragmented packet Number of packets smaller than 64 bytes, with an invalid
FCS.
This corresponds to the RMON MIB etherStatsFragments object.
Jabber Number of packets larger than 1632 bytes, and with an invalid FCS.
This corresponds to the RMON MIB etherStatsJabbers object, except for the
used MAXPKTSIZE (1632 instead of 1518 bytes).
Checksum/FCS Error Packets of valid length (64-1632), but with an incorrect
FCS.
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