Reference Guide

Column Meaning
Receive Packets
Discarded
The number of inbound packets which were chosen to be discarded even though no
errors had been detected to prevent their being deliverable to a higher-layer
protocol. One possible reason for discarding such a packet could be to free up buer
space.
Packets Received
with MAC Errors
•
Total Packets Received with MAC Errors - The total number of inbound packets that
contained 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 dierent
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
Not Forwarded
•
Total Received Packets Not Forwarded - A count of valid frames received which were
discarded (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.
Packets
Transmitted
Octets
•
Total Packets Transmitted (Octets) - The total number of octets of data (including those in
bad packets) received on the network (excluding framing bits but including FCS octets).
This object can be used as a reasonable estimate of Ethernet utilization. If greater precision
is desired, the etherStatsPkts and etherStatsOctets objects should be sampled before and
after a common interval. -----
•
Packets Transmitted 64 Octets - The total number of packets (including bad packets)
received that were 64 octets in length (excluding framing bits but including FCS octets).
•
Packets Transmitted 65-127 Octets - The total number of packets (including bad packets)
received that were between 65 and 127 octets in length inclusive (excluding framing bits
but including FCS octets).
•
Packets Transmitted 128-255 Octets - The total number of packets (including bad packets)
received that were between 128 and 255 octets in length inclusive (excluding framing bits
but including FCS octets).
•
Packets Transmitted 256-511 Octets - The total number of packets (including bad packets)
received that were between 256 and 511 octets in length inclusive (excluding framing bits
but including FCS octets).
•
Packets Transmitted 512-1023 Octets - The total number of packets (including bad
packets) received that were between 512 and 1023 octets in length inclusive (excluding
framing bits but including FCS octets).
Utility Commands
ExtremeSwitching 200 Series: Command Reference Guide for version 01 .02.04.0007 149