NETGEAR M6100 Series Reference Manual page 159

Term Definition
Packets Received Total Packets Received with MAC Errors - The total number of inbound packets that contained
with MAC Errors errors preventing them from being deliverable to a higher-layer protocol.
Jabbers Received - The total number of packets received that were longer than 1518 octets
(excluding framing bits, but including FCS octets), and had either a bad Frame Check Sequence
(FCS) with an integral number of octets (FCS Error) or a bad FCS with a non-integral number of
octets (Alignment Error). Note that this definition of jabber is different than the definition in
IEEE-802.3 section 8.2.1.5 (10BASE5) and section 10.3.1.4 (10BASE2). These documents define
jabber as the condition where any packet exceeds 20 ms. The allowed range to detect jabber is
between 20 ms and 150 ms.
Fragments/Undersize Received - The total number of packets received that were less than 64
octets in length (excluding framing bits but including FCS octets).
Alignment Errors - The total number of packets received that had a length (excluding framing bits,
but including FCS octets) of between 64 and 1518 octets, inclusive, but had a bad Frame Check
Sequence (FCS) with a non-integral number of octets.
FCS Errors - The total number of packets received that had a length (excluding framing bits, but
including FCS octets) of between 64 and 1518 octets, inclusive, but had a bad Frame Check
Sequence (FCS) with an integral number of octets.
Overruns - The total number of frames discarded as this port was overloaded with incoming
packets, and could not keep up with the inflow.
Received Packets Total Received Packets Not Forwarded - A count of valid frames received which were discarded
Not Forwarded (in other words, filtered) by the forwarding process
802.3x Pause Frames Received - A count of MAC Control frames received on this interface with an
opcode indicating the PAUSE operation. This counter does not increment when the interface is
operating in half-duplex mode.
Unacceptable Frame Type - The number of frames discarded from this port due to being an
unacceptable frame type.
M6100 Series Switches
Utility Commands
159